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  • MAX811_datasheet.pdf

    2021-04-19 08:36:51
    MAX811 MAX812芯片资料 数据手册,1积分下载
  • MAX811-MAX812芯片资料

    2011-11-23 23:36:27
    MAX811-MAX812 芯片资料 datasheet
  • max811t.pdf

    2012-04-22 20:04:45
    max811t.pdf
  • 复位芯片MAX811T

    2013-04-22 12:44:19
    常用复位芯片MAX811T的原始英文数据手册
  • MAX811复位芯片

    2012-07-30 12:19:21
    这是MAX811复位芯片,4个引脚,适用于大部分的复位电路
  • max811的替代产品,可以实现pin to pin 替换,数据参数见附表文件,两个器件的封装都可以在立创商城中找到下载
  • 关于MAX811MCU监控芯片做复位的理解

    千次阅读 2019-10-30 14:41:23
    常用单片机的reset引脚是由轻触按键及上拉电阻、消抖...而MAX811为常用的复位芯片,可以提供自动复位和手动复位两种方式,两个引脚控制。分别是 R\E\S\E\T\和M\R\引脚。 R\E\S\E\T\: Active-Low Reset Output. ...

    常用单片机的reset引脚是由轻触按键及上拉电阻、消抖电容组成的复位电路,这种电路适合用在产品验证阶段,但如果是便携式成品电路,不可能单独流出个按键做reset使用,那就需要使用自动复位了。而MAX811为常用的复位芯片,可以提供自动复位和手动复位两种方式,两个引脚控制。分别是 R\E\S\E\T\和M\R\引脚。

     

    R\E\S\E\T\: Active-Low Reset Output. (自动低复位输出。当 VCC 低于复位阈值或 MR 保持在低位时,重置将保持低。重置条件终止后,重置活动超时周期 (tRP) 的重置保持较低。)

    M\R\: Active-High Reset Output。(手动重置输入。MR 上的逻辑低断言重置。只要 MR 低且 MR 返回高后为 180ms,则重置仍断言为此低电平有一个内部 20kΩ 上拉电阻。它可以从 TTL 或 CMOS 逻辑线路驱动,或者通过开关短路接地。未使用,请保持打开状态。)

     

    当使用自动复位的时候,需要把M\R\引脚接上拉电阻!

     

    英语还是需要提高,在看英文技术文档还是有点吃力。

    展开全文
  • max811_datasheet

    2014-11-19 23:00:55
    按键复位辅助芯片,广泛应用于嵌入式硬件设计
  • 811-变态最大值 内存限制:64MB 时间限制:1000ms 特判: No 通过数:6 提交数:15 难度:1 ...

    811-变态最大值


    内存限制:64MB 时间限制:1000ms 特判: No
    通过数:6 提交数:15 难度:1

    题目描述:

    Yougth讲课的时候考察了一下求三个数最大值这个问题,没想到大家掌握的这么烂,幸好在他的帮助下大家算是解决了这个问题,但是问题又来了。

    他想在一组数中找一个数,这个数可以不是这组数中的最大的,但是要是相对比较大的,但是满足这个条件的数太多了,怎么办呢?他想到了一个办法,把这一组数从开始把每相邻三个数分成一组(组数是从1开始),奇数组的求最大值,偶数组的求最小值,然后找出这些值中的最大值。

    输入描述:

    有多组测试数据,以文件结束符为标志。
    每组测试数据首先一个N,是数组中数的个数。(0<N<10000,为降低题目难度,N是3的倍数)
    然后是数组中的这些数。

    输出描述:

    输出包括一行,就是其中的最大值。

    样例输入:

    复制
    3
    4 5 6
    6
    1 2 3 7 9 5
    

    样例输出:

    6
    5

    C/C++ :

    #include <iostream>
    #include <algorithm>
    #include <cstring>
    #include <cstdio>
    #include <cmath>
    #include <stack>
    #include <set>
    #include <map>
    #include <queue>
    #include <climits>
    #include <bitset>
    #define PI 3.1415926
    
    using namespace std;
    
    int main()
    {
        int n;
        while (cin >>n)
        {
            int ans = -INT_MAX, a, b, c;
    
            for (int i = 1, j = 1; i <= n; i += 3, ++ j)
            {
                cin >>a >>b >>c;
                if (j & 1)
                {
                    int temp = a;
                    if (temp < b)
                        temp = b;
                    if (temp < c)
                        temp = c;
                    ans = max(temp, ans);
                }
                else
                {
                    int temp = a;
                    if (temp > b)
                        temp = b;
                    if (temp > c)
                        temp = c;
                    ans = max(ans, temp);
                }
            }
    
            printf("%d\n", ans);
        }
    
        return 0;
    }

     

    转载于:https://www.cnblogs.com/GetcharZp/p/9354129.html

    展开全文
  • max232 74hc00 74hc573 as117 sl811资料
  • 2.温度测量模块采用K\热电偶与MAX6775相结合可实现冷端温度补偿高分辨率测量 3.显示用液晶显示屏显示实时温度值。 4. 系统结构如图2.4。  硬件组成原理 本系统硬件主要由热电偶温度采集电路、MAX6675温度处理...

    硬件设计

    (末尾附文件)

    1.采用AT89C51单片机作为控制器,分别对温度采集、LCD显示。
    2.温度测量模块采用K\热电偶与MAX6775相结合可实现冷端温度补偿高分辨率测量
    3.显示用液晶显示屏显示实时温度值。
    4. 系统结构如图2.4。
    在这里插入图片描述
     硬件组成原理
    本系统硬件主要由热电偶温度采集电路、MAX6675温度处理电路、89C51单片机控制电路和LCD显示电路,报警电路组成。
    首先通过键盘设定温度范围,存储在24C02C存储器里,热电偶采用分度号为K的热电偶,为了减少外界信号的干扰通过双绞线跟MAX6675芯片直接相连接。MAX6675芯片通过SPI串行接口传输数据,采用的89C51单片机对带有冷端补偿的温度转换芯片MAX6675进行控制。本系统设计还具有报警的特点,当所测量的温度低于所设置的温度下限或者高于所设置的温度上限时报警电路发出警报。显示电路由89C51单片机通过1602液晶显示屏(LCD)进行显示,显示的是当前设置温度的上限与下限,以及热电偶测温的温度。

    仿真图1: LCD1602为显示器,MAX1241为数据采集芯片; 可设置温度上下限,超出范围后蜂鸣器报警

    在这里插入图片描述

    仿真图2 LCD1602为显示器,MAX6775为数据采集芯片;可设置温度上下限,超出范围电机将被正反驱动且相应的LED会亮起
    在这里插入图片描述

    程序设计

    #include<reg51.h>
    #include<intrins.h> //包含_nop_()函数定义的头文件
    #include<absacc.h>
    #define uchar unsigned char
    #define uint  unsigned int
    #define LCD1602_DW XBYTE[65023]
    #define LCD1602_CW XBYTE[64767]
    #define LCD1602_CR XBYTE[65279]
    sbit DOUT=P1^5;
    sbit SCLK=P1^6;
    sbit CS=P1^7;
    uint aaaa,aa,cc;//储存A/D转换后的值
    uchar num;
    uint a,b,c;
    sbit p10=P1^0;//按键端口
    sbit p11=P1^1;//按键端口
    sbit p12=P1^2;//按键端口
    sbit p30=P3^0;//蜂鸣器接口
    uint code table1[]={	
    						0,3,6,9,10,15,18,21,23,26,
    						29,32,35,38,41,44,47,50,53,56,
    						59,62,65,68,71,74,78,81,84,87,
    						90,93,96,99,102,105,108,112,115,118,
    						121,124,127,130,134,137,140,143,146,149,
    						153,156,159,162,165,169,172,175,178,181,
    						185,188,191,194,198,201,204,207,211,214,
    						217,220,224,227,230,233,237,240,243,246,
    						250,253,256,260,263,266,270,273,276,280,
    						283,286,290,293,296,300,303,306,310,313,
    						316,320,323,326,330,333,336,340,343,346,
    						350,353,356,360,363,366,370,373,376,380,
    						383,387,390,393,397,400,403,407,410,413,
    						417,420,424,427,430,434,437,440,444,447,
    						451,454,457,461,464,467,471,474,477,481,484,
    						487,491,494,497,501,504,508,511,514,518,
    						521,524,528,531,534,538,541,544,548,551,
    						554,558,561,564,567,571,574,577,581,584,
    						587,591,594,597,600,604,607,610,614,617,
    						620,624,627,630,633,637,640,643,646,650,
    						653,656,659,663,666,669,673,676,679,682,
    						686,689,692,695,699,702,705,708,711,715,
    						718,721,724,728,731,734,737,741,744,747,
    						750,754,757,760,763,766,770,773,776,779,
    						783,786,789,792,796,799,802,805,809,812,
    						815,818,821,825,828,831,834,838,841,844,
    						847,851,854,857,860,864,867,870,873,877,
    						880,883,886,890,893,896,899,903,906,909,
    						913,916,919,922,926,929,932,935,939,942,
    						945,949,952,955,958,962,965,968,972,975,
    						978,981,985,988,991,995,998,1001,1005,1008,
    						1011,1014,1018,1021,1024,1028,1031,1034,1038,1041,
    						1044,1048,1051,1054,1058,1061,1064,1068,1071,1074,
    						1078,1081,1084,1088,1091,1094,1098,1101,1104,1108,
    						1111,1114,1118,1121,1124,1128,1131,1135,1138,1141,
    						1145,1148,1151,1155,1158,1161,1165,1168,1171,1175,
    						1178,1182,1185,1188,1192,1195,1198,1202,1205,1209,
    						1212,1215,1219,1222,1225,1229,1232,1236,1239,1242,
    						1246,1249,1252,1256,1259,1263,1266,1269,1273,1276,
    						1279,1283,1286,1290,1293,1296,1300,1303,1307,1310,
    						1313,1317,1320,1324,1327,1330,1334,1337,1341,1344,
    						1347,1351,1354,1358,1361,1364,1368,1371,1375,1378,
    						1381,1385,1388,1392,1395,1398,1402,1405,1409,1412,
    						1415,1419,1422,1426,1429,1433,1436,1439,1443,1446,
    						1450,1453,1456,1460,1463,1467,1470,1474,1477,1480,
    						1484,1487,1491,1494,1497,1501,1504,1508,1511,1515,
    						1518,1521,1525,1528,1532,1535,1539,1542,1545,1549,
    						1552,1556,1559,1563,1566,1569,1573,1576,1580,1583,
    						1587,1590,1594,1597,1600,1604,1607,1611,1614,1618,
    						1621,1624,1628,1631,1635,1638,1642,1645,1649,1652,
    						1655,1659,1662,1666,1669,1673,1676,1680,1683,1686,
    						1690,1693,1697,1700,1704,1707,1711,1714,1717,1721,
    						1724,1728,1731,1735,1738,1742,1745,1748,1752,1755,
    						1759,1762,1766,1769,1773,1776,1779,1783,1786,1790,
    						1793,1797,1800,1804,1807,1811,1814,1817,1821,1824,
    						1828,1831,1835,1838,1842,1845,1849,1852,1855,1859,
    						1862,1866,1869,1873,1876,1880,1883,1887,1890,1893,
    						1897,1900,1904,1907,1911,1914,1918,1921,1925,1928,
    						1931,1935,1938,1942,1945,1949,1952,1956,1959,1963,
    						1966,1969,1973,1976,1980,1983,1987,1990,1994,1997,
    						2001,2004,2007,2011,2014,2018,2021,2025,2028,2032,
    						2035,2039,2042,2045,2049,2052,2056,2059,2063,2066,
    						2070,2073,2076,2080,2083,2087,2090,2094,2097,2101,
    						2104,2108,2111,2114,2118,2121,2125,2128,2132,2135,
    						2139,2142,2145,2149,2152,2156,2159,2163,2166,2170,
    						2173,2176,2180,2183,2187,2190,2194,2197,2201,2204,
    						2207,2211,2214,2218,2221,2225,2228,2231,2235,2238,
    						2242,2245,2249,2252,2256,2259,2262,2266,2269,2273,
    						2276,2280,2283,2286,2290,2293,2297,2300,2304,2307,
    						2310,2314,2317,2321,2324,2328,2331,2334,2338,2341,
    						2345,2348,2352,2355,2358,2362,2365,2369,2372,2375,
    						2379,2382,2386,2389,2393,2396,2399,2403,2406,2410,
    						2413,2416,2420,2423,2427,2430,2434,2437,2440,2444,
    						2447,2451,2454,2457,2461,2464,2468,2471,2474,2478,
    						2481,2485,2488,2491,2495,2498,2502,2505,2508,2512,
    						2515,2519,2522,2525,2529,2532,2536,2539,2542,2546,
    						2549,2552,2556,2559,2563,2566,2569,2573,2576,2580,
    						2583,2586,2590,2593,2596,2600,2603,2607,2610,2613,
    						2617,2620,2623,2627,2630,2634,2637,2640,2644,2647,
    						2650,2654,2657,2661,2664,2667,2671,2674,2677,2681,
    						2684,2687,2691,2694,2698,2701,2704,2708,2711,2714,
    						2718,2721,2724,2728,2731,2734,2738,2741,2744,2748,
    						2751,2754,2758,2761,2765,2768,2771,2775,2778,2781,
    						2785,2788,2791,2795,2798,2801,2805,2808,2811,2815,
    						2818,2821,2825,2828,2831,2835,2838,2841,2844,2848,
    						2851,2854,2858,2861,2864,2868,2871,2874,2878,2881,
    						2884,2888,2891,2894,2898,2901,2904,2907,2911,2914,
    						2917,2921,2924,2927,2931,2934,2937,2941,2944,2947,
    						2950,2954,2957,2960,2964,2967,2970,2973,2977,2980,
    						2983,2987,2990,2993,2997,3000,3003,3006,3010,3013,
    						3016,3019,3023,3026,3029,3032,3036,3039,3042,3045,
    						3049,3052,3055,3058,3061,3064,3067,3071,3074,3077,
    						3080,3082,3085,3088,3091,3094,3096,3099,3102,3104,
    						3106,3109,3111,3113,3115,3117,3119,3121,3123,3125,
    						3126,3128,3130,3131,3132,3134,3135,3136,3138,3139,
    						3140,3141,3142,3143,3144,3145,3146,3147,3148,3149,
    						3150
    					};
    uint code table2[]={	
    						52,51,50,49,48,47,46,45,44,43,
    						42,41,
    						40,39,38,37,36,35,34,33,32,31,
    						30,29,28,27,26,25,24,23,22,21,
    						20,19,18,17,16,15,14,13,12,11,
    						10,9,8,7,6,5,4,3,2,1,
    						0,1,2,3,4,5,6,7,8,9,
    						10,11,12,13,14,15,16,17,18,19,
    						20,21,22,23,24,25,26,27,28,29,
    						30,31,32,33,34,35,36,37,38,39,
    						40,41,42,43,44,45,46,47,48,49,
    						50,51,52,53,54,55,56,57,58,59,
    						60,61,62,63,64,65,66,67,68,69,
    						70,71,72,73,74,75,76,77,78,79,
    						80,81,82,83,84,85,86,87,88,89,
    						90,91,92,93,94,95,96,97,98,99,
    						100,101,102,103,104,105,106,107,108,109,
    						110,111,112,113,114,115,116,117,118,119,
    						120,121,122,123,124,125,126,127,128,129,
    						130,131,132,133,134,135,136,137,138,139,
    						140,141,142,143,144,145,146,147,148,149,
    						150,151,152,153,154,155,156,157,158,159,
    						160,161,162,163,164,165,166,167,168,169,
    						170,171,172,173,174,175,176,177,178,179,
    						180,181,182,183,184,185,186,187,188,189,
    						190,191,192,193,194,195,196,197,198,199,
    						200,201,202,203,204,205,206,207,208,209,
    						210,211,212,213,214,215,216,217,218,219,
    						220,221,222,223,224,225,226,227,228,229,
    						230,231,232,233,234,235,236,237,238,239,
    						240,241,242,243,244,245,246,247,248,249,
    						250,251,252,253,254,255,256,257,258,259,
    						260,261,262,263,264,265,266,267,268,269,
    						270,271,272,273,274,275,276,277,278,279,
    						280,281,282,283,284,285,286,287,288,289,
    						290,291,292,293,294,295,296,297,298,299,
    						300,301,302,303,304,305,306,307,308,309,
    						310,311,312,313,314,315,316,317,318,319,
    						320,321,322,323,324,325,326,327,328,329,
    						330,331,332,333,334,335,336,337,338,339,
    						340,341,342,343,344,345,346,347,348,349,
    						350,351,352,353,354,355,356,357,358,359,
    						360,361,362,363,364,365,366,367,368,369,
    						370,371,372,373,374,375,376,377,378,379,
    						380,381,382,383,384,385,386,387,388,389,
    						390,391,392,393,394,395,396,397,398,399,
    						400,401,402,403,404,405,406,407,408,409,
    						410,411,412,413,414,415,416,417,418,419,
    						420,421,422,423,424,425,426,427,428,429,
    						430,431,432,433,434,435,436,437,438,439,
    						440,441,442,443,444,445,446,447,448,449,
    						450,451,452,453,454,455,456,457,458,459,
    						460,461,462,463,464,465,466,467,468,469,
    						470,471,472,473,474,475,476,477,478,479,
    						480,481,482,483,484,485,486,487,488,489,
    						490,491,492,493,494,495,496,497,498,499,
    						500,501,502,503,504,505,506,507,508,509,
    						510,511,512,513,514,515,516,517,518,519,
    						520,521,522,523,524,525,526,527,528,529,
    						530,531,532,533,534,535,536,537,538,539,
    						540,541,542,543,544,545,546,547,548,549,
    						550,551,552,553,554,555,556,557,558,559,
    						560,561,562,563,564,565,566,567,568,569,
    						570,571,572,573,574,575,576,577,578,579,
    						580,581,582,583,584,585,586,587,588,589,
    						590,591,592,593,594,595,596,597,598,599,
    						600,601,602,603,604,605,606,607,608,609,
    						610,611,612,613,614,615,616,617,618,619,
    						620,621,622,623,624,625,626,627,628,629,
    						630,631,632,633,634,635,636,637,638,639,
    						640,641,642,643,644,645,646,647,648,649,
    						650,651,652,653,654,655,656,657,658,659,
    						660,661,662,663,664,665,666,667,668,669,
    						670,671,672,673,674,675,676,677,678,679,
    						680,681,682,683,684,685,686,687,688,689,
    						690,691,692,693,694,695,696,697,698,699,
    						700,701,702,703,704,705,706,707,708,709,
    						710,711,712,713,714,715,716,717,718,719,
    						720,721,722,723,724,725,726,727,728,729,
    						730,731,732,733,734,735,736,737,738,739,
    						740,741,742,743,744,745,746,747,748,749,
    						750,751,752,753,754,755,756,757,758,759,
    						760,761,762,763,764,765,766,767,768,769,
    						770,771,772,773,774,775,776,777,778,779,
    						780,781,782,783,784,785,786,787,788,789,
    						790,791,792,793,794,795,796,797,798,799,
    						800,801,802,803,804,805,806,807,808,809,
    						810,811,812,813,814,815,816,817,818,819,
    						820,821,822,823,824,825,826,827,828,829,
    						830,831,832,833,834,835,836,837,838,839,
    						840,841,842,843,844,845,846,847,848,849,
    						850,851,852,853,854,855,856,857,858,859,
    						860,861,862,863,864,865,866,867,868,869,
    						870,871,872,873,874,875,876,877,878,879,
    						880,881,882,883,884,885,886,887,888,889,
    						890,891,892,893,894,895,896,897,898,899,
    						900,901,902,903,904,905,906,907,908,909
    					};
    void delay1(uint z)
    {
    	for(z=0;z<10;z++)
    		_nop_();
    }
    //判忙函数
    void WHILE_BUSY()						 
    {
    	while((bit)(LCD1602_CR&128));//读回DB7的值,为DB7=1时则等待 。
    }
    void LCD1602_init()
    { 
      	WHILE_BUSY();//判忙,不忙继续写指令
      	LCD1602_CW=56;//写指令,8位接口,双行显示,5*7字符
      	WHILE_BUSY();//判忙,不忙继续写指令
      	LCD1602_CW=1;//清屏
      	WHILE_BUSY();//判忙,不忙继续写指令
      	LCD1602_CW=6;//地址计数自动加一
       	WHILE_BUSY();//判忙,不忙继续写指令
      	LCD1602_CW=12;//开显示
    }
    uint read_max1241()
    {
    	uint voltage=0;		 //存放12位数字量
    	uchar cont12=12;	     //12位
    	CS=1;
    	SCLK=0;
    	CS=0;
    	while(DOUT==0);       //转换结束
    	SCLK=1;
    	SCLK=0;
    	while(cont12--)
    	{
    		SCLK=1;              //SCLK上升沿数据稳定并读出
    		voltage<<=1;    
    		if(DOUT==1)
    			voltage+=1;
    		SCLK=0;
    	}	 
    	CS=1;
    	return voltage;
    }
    

    .

    文件地址

    链接:https://pan.baidu.com/s/1g35SOgoVfOdbluOuerBwNg
    提取码:z5q5

    .

    展开全文
  • hdu 2710 Max Factor

    千次阅读 2015-12-26 13:21:28
    hdu 2710 Max Factor 水题写了一上午,还是打表的,开始,打表还超时,看了一下别人的打表,加了一个 !!=EOF ,就过了。  先贴打表代码:  #include #include #include #include using namespace std; int main...

                             hdu 2710 Max Factor

    水题写了一上午,还是打表的,开始,打表还超时,看了一下别人的打表,加了一个 !!=EOF    ,就过了。

        先贴打表代码:

       

    #include<iostream>
    #include<cstdio>
    #include<cstring>
    #include<cmath>
    using namespace std;
    int main()
    {
        int n,j,a,maxn,maxp;
        int prime[2265]= {1,2,3,5,7,11,13,17,19,23,29,
                          31,37,41,43,47,53,59,61,67,71,
                          73,79,83,89,97,101,103,107,109,113,
                          127,131,137,139,149,151,157,163,167,173,
                          179,181,191,193,197,199,211,223,227,229,
                          233,239,241,251,257,263,269,271,277,281,
                          283,293,307,311,313,317,331,337,347,349,
                          353,359,367,373,379,383,389,397,401,409,
                          419,421,431,433,439,443,449,457,461,463,
                          467,479,487,491,499,503,509,521,523,541,
                          547,557,563,569,571,577,587,593,599,601,
                          607,613,617,619,631,641,643,647,653,659,
                          661,673,677,683,691,701,709,719,727,733,
                          739,743,751,757,761,769,773,787,797,809,
                          811,821,823,827,829,839,853,857,859,863,
                          877,881,883,887,907,911,919,929,937,941,
                          947,953,967,971,977,983,991,997,1009,1013,
                          1019,1021,1031,1033,1039,1049,1051,1061,1063,1069,
                          1087,1091,1093,1097,1103,1109,1117,1123,1129,1151,
                          1153,1163,1171,1181,1187,1193,1201,1213,1217,1223,
                          1229,1231,1237,1249,1259,1277,1279,1283,1289,1291,
                          1297,1301,1303,1307,1319,1321,1327,1361,1367,1373,
                          1381,1399,1409,1423,1427,1429,1433,1439,1447,1451,
                          1453,1459,1471,1481,1483,1487,1489,1493,1499,1511,
                          1523,1531,1543,1549,1553,1559,1567,1571,1579,1583,
                          1597,1601,1607,1609,1613,1619,1621,1627,1637,1657,
                          1663,1667,1669,1693,1697,1699,1709,1721,1723,1733,
                          1741,1747,1753,1759,1777,1783,1787,1789,1801,1811,
                          1823,1831,1847,1861,1867,1871,1873,1877,1879,1889,
                          1901,1907,1913,1931,1933,1949,1951,1973,1979,1987,
                          1993,1997,1999,2003,2011,2017,2027,2029,2039,2053,
                          2063,2069,2081,2083,2087,2089,2099,2111,2113,2129,
                          2131,2137,2141,2143,2153,2161,2179,2203,2207,2213,
                          2221,2237,2239,2243,2251,2267,2269,2273,2281,2287,
                          2293,2297,2309,2311,2333,2339,2341,2347,2351,2357,
                          2371,2377,2381,2383,2389,2393,2399,2411,2417,2423,
                          2437,2441,2447,2459,2467,2473,2477,2503,2521,2531,
                          2539,2543,2549,2551,2557,2579,2591,2593,2609,2617,
                          2621,2633,2647,2657,2659,2663,2671,2677,2683,2687,
                          2689,2693,2699,2707,2711,2713,2719,2729,2731,2741,
                          2749,2753,2767,2777,2789,2791,2797,2801,2803,2819,
                          2833,2837,2843,2851,2857,2861,2879,2887,2897,2903,
                          2909,2917,2927,2939,2953,2957,2963,2969,2971,2999,
                          3001,3011,3019,3023,3037,3041,3049,3061,3067,3079,
                          3083,3089,3109,3119,3121,3137,3163,3167,3169,3181,
                          3187,3191,3203,3209,3217,3221,3229,3251,3253,3257,
                          3259,3271,3299,3301,3307,3313,3319,3323,3329,3331,
                          3343,3347,3359,3361,3371,3373,3389,3391,3407,3413,
                          3433,3449,3457,3461,3463,3467,3469,3491,3499,3511,
                          3517,3527,3529,3533,3539,3541,3547,3557,3559,3571,
                          3581,3583,3593,3607,3613,3617,3623,3631,3637,3643,
                          3659,3671,3673,3677,3691,3697,3701,3709,3719,3727,
                          3733,3739,3761,3767,3769,3779,3793,3797,3803,3821,
                          3823,3833,3847,3851,3853,3863,3877,3881,3889,3907,
                          3911,3917,3919,3923,3929,3931,3943,3947,3967,3989,
                          4001,4003,4007,4013,4019,4021,4027,4049,4051,4057,
                          4073,4079,4091,4093,4099,4111,4127,4129,4133,4139,
                          4153,4157,4159,4177,4201,4211,4217,4219,4229,4231,
                          4241,4243,4253,4259,4261,4271,4273,4283,4289,4297,
                          4327,4337,4339,4349,4357,4363,4373,4391,4397,4409,
                          4421,4423,4441,4447,4451,4457,4463,4481,4483,4493,
                          4507,4513,4517,4519,4523,4547,4549,4561,4567,4583,
                          4591,4597,4603,4621,4637,4639,4643,4649,4651,4657,
                          4663,4673,4679,4691,4703,4721,4723,4729,4733,4751,
                          4759,4783,4787,4789,4793,4799,4801,4813,4817,4831,
                          4861,4871,4877,4889,4903,4909,4919,4931,4933,4937,
                          4943,4951,4957,4967,4969,4973,4987,4993,4999,5003,
                          5009,5011,5021,5023,5039,5051,5059,5077,5081,5087,
                          5099,5101,5107,5113,5119,5147,5153,5167,5171,5179,
                          5189,5197,5209,5227,5231,5233,5237,5261,5273,5279,
                          5281,5297,5303,5309,5323,5333,5347,5351,5381,5387,
                          5393,5399,5407,5413,5417,5419,5431,5437,5441,5443,
                          5449,5471,5477,5479,5483,5501,5503,5507,5519,5521,
                          5527,5531,5557,5563,5569,5573,5581,5591,5623,5639,
                          5641,5647,5651,5653,5657,5659,5669,5683,5689,5693,
                          5701,5711,5717,5737,5741,5743,5749,5779,5783,5791,
                          5801,5807,5813,5821,5827,5839,5843,5849,5851,5857,
                          5861,5867,5869,5879,5881,5897,5903,5923,5927,5939,
                          5953,5981,5987,6007,6011,6029,6037,6043,6047,6053,
                          6067,6073,6079,6089,6091,6101,6113,6121,6131,6133,
                          6143,6151,6163,6173,6197,6199,6203,6211,6217,6221,
                          6229,6247,6257,6263,6269,6271,6277,6287,6299,6301,
                          6311,6317,6323,6329,6337,6343,6353,6359,6361,6367,
                          6373,6379,6389,6397,6421,6427,6449,6451,6469,6473,
                          6481,6491,6521,6529,6547,6551,6553,6563,6569,6571,
                          6577,6581,6599,6607,6619,6637,6653,6659,6661,6673,
                          6679,6689,6691,6701,6703,6709,6719,6733,6737,6761,
                          6763,6779,6781,6791,6793,6803,6823,6827,6829,6833,
                          6841,6857,6863,6869,6871,6883,6899,6907,6911,6917,
                          6947,6949,6959,6961,6967,6971,6977,6983,6991,6997,
                          7001,7013,7019,7027,7039,7043,7057,7069,7079,7103,
                          7109,7121,7127,7129,7151,7159,7177,7187,7193,7207,
                          7211,7213,7219,7229,7237,7243,7247,7253,7283,7297,
                          7307,7309,7321,7331,7333,7349,7351,7369,7393,7411,
                          7417,7433,7451,7457,7459,7477,7481,7487,7489,7499,
                          7507,7517,7523,7529,7537,7541,7547,7549,7559,7561,
                          7573,7577,7583,7589,7591,7603,7607,7621,7639,7643,
                          7649,7669,7673,7681,7687,7691,7699,7703,7717,7723,
                          7727,7741,7753,7757,7759,7789,7793,7817,7823,7829,
                          7841,7853,7867,7873,7877,7879,7883,7901,7907,7919,
                          7927,7933,7937,7949,7951,7963,7993,8009,8011,8017,
                          8039,8053,8059,8069,8081,8087,8089,8093,8101,8111,
                          8117,8123,8147,8161,8167,8171,8179,8191,8209,8219,
                          8221,8231,8233,8237,8243,8263,8269,8273,8287,8291,
                          8293,8297,8311,8317,8329,8353,8363,8369,8377,8387,
                          8389,8419,8423,8429,8431,8443,8447,8461,8467,8501,
                          8513,8521,8527,8537,8539,8543,8563,8573,8581,8597,
                          8599,8609,8623,8627,8629,8641,8647,8663,8669,8677,
                          8681,8689,8693,8699,8707,8713,8719,8731,8737,8741,
                          8747,8753,8761,8779,8783,8803,8807,8819,8821,8831,
                          8837,8839,8849,8861,8863,8867,8887,8893,8923,8929,
                          8933,8941,8951,8963,8969,8971,8999,9001,9007,9011,
                          9013,9029,9041,9043,9049,9059,9067,9091,9103,9109,
                          9127,9133,9137,9151,9157,9161,9173,9181,9187,9199,
                          9203,9209,9221,9227,9239,9241,9257,9277,9281,9283,
                          9293,9311,9319,9323,9337,9341,9343,9349,9371,9377,
                          9391,9397,9403,9413,9419,9421,9431,9433,9437,9439,
                          9461,9463,9467,9473,9479,9491,9497,9511,9521,9533,
                          9539,9547,9551,9587,9601,9613,9619,9623,9629,9631,
                          9643,9649,9661,9677,9679,9689,9697,9719,9721,9733,
                          9739,9743,9749,9767,9769,9781,9787,9791,9803,9811,
                          9817,9829,9833,9839,9851,9857,9859,9871,9883,9887,
                          9901,9907,9923,9929,9931,9941,9949,9967,9973,10007,
                          10009,10037,10039,10061,10067,10069,10079,10091,10093,10099,
                          10103,10111,10133,10139,10141,10151,10159,10163,10169,10177,
                          10181,10193,10211,10223,10243,10247,10253,10259,10267,10271,
                          10273,10289,10301,10303,10313,10321,10331,10333,10337,10343,
                          10357,10369,10391,10399,10427,10429,10433,10453,10457,10459,
                          10463,10477,10487,10499,10501,10513,10529,10531,10559,10567,
                          10589,10597,10601,10607,10613,10627,10631,10639,10651,10657,
                          10663,10667,10687,10691,10709,10711,10723,10729,10733,10739,
                          10753,10771,10781,10789,10799,10831,10837,10847,10853,10859,
                          10861,10867,10883,10889,10891,10903,10909,10937,10939,10949,
                          10957,10973,10979,10987,10993,11003,11027,11047,11057,11059,
                          11069,11071,11083,11087,11093,11113,11117,11119,11131,11149,
                          11159,11161,11171,11173,11177,11197,11213,11239,11243,11251,
                          11257,11261,11273,11279,11287,11299,11311,11317,11321,11329,
                          11351,11353,11369,11383,11393,11399,11411,11423,11437,11443,
                          11447,11467,11471,11483,11489,11491,11497,11503,11519,11527,
                          11549,11551,11579,11587,11593,11597,11617,11621,11633,11657,
                          11677,11681,11689,11699,11701,11717,11719,11731,11743,11777,
                          11779,11783,11789,11801,11807,11813,11821,11827,11831,11833,
                          11839,11863,11867,11887,11897,11903,11909,11923,11927,11933,
                          11939,11941,11953,11959,11969,11971,11981,11987,12007,12011,
                          12037,12041,12043,12049,12071,12073,12097,12101,12107,12109,
                          12113,12119,12143,12149,12157,12161,12163,12197,12203,12211,
                          12227,12239,12241,12251,12253,12263,12269,12277,12281,12289,
                          12301,12323,12329,12343,12347,12373,12377,12379,12391,12401,
                          12409,12413,12421,12433,12437,12451,12457,12473,12479,12487,
                          12491,12497,12503,12511,12517,12527,12539,12541,12547,12553,
                          12569,12577,12583,12589,12601,12611,12613,12619,12637,12641,
                          12647,12653,12659,12671,12689,12697,12703,12713,12721,12739,
                          12743,12757,12763,12781,12791,12799,12809,12821,12823,12829,
                          12841,12853,12889,12893,12899,12907,12911,12917,12919,12923,
                          12941,12953,12959,12967,12973,12979,12983,13001,13003,13007,
                          13009,13033,13037,13043,13049,13063,13093,13099,13103,13109,
                          13121,13127,13147,13151,13159,13163,13171,13177,13183,13187,
                          13217,13219,13229,13241,13249,13259,13267,13291,13297,13309,
                          13313,13327,13331,13337,13339,13367,13381,13397,13399,13411,
                          13417,13421,13441,13451,13457,13463,13469,13477,13487,13499,
                          13513,13523,13537,13553,13567,13577,13591,13597,13613,13619,
                          13627,13633,13649,13669,13679,13681,13687,13691,13693,13697,
                          13709,13711,13721,13723,13729,13751,13757,13759,13763,13781,
                          13789,13799,13807,13829,13831,13841,13859,13873,13877,13879,
                          13883,13901,13903,13907,13913,13921,13931,13933,13963,13967,
                          13997,13999,14009,14011,14029,14033,14051,14057,14071,14081,
                          14083,14087,14107,14143,14149,14153,14159,14173,14177,14197,
                          14207,14221,14243,14249,14251,14281,14293,14303,14321,14323,
                          14327,14341,14347,14369,14387,14389,14401,14407,14411,14419,
                          14423,14431,14437,14447,14449,14461,14479,14489,14503,14519,
                          14533,14537,14543,14549,14551,14557,14561,14563,14591,14593,
                          14621,14627,14629,14633,14639,14653,14657,14669,14683,14699,
                          14713,14717,14723,14731,14737,14741,14747,14753,14759,14767,
                          14771,14779,14783,14797,14813,14821,14827,14831,14843,14851,
                          14867,14869,14879,14887,14891,14897,14923,14929,14939,14947,
                          14951,14957,14969,14983,15013,15017,15031,15053,15061,15073,
                          15077,15083,15091,15101,15107,15121,15131,15137,15139,15149,
                          15161,15173,15187,15193,15199,15217,15227,15233,15241,15259,
                          15263,15269,15271,15277,15287,15289,15299,15307,15313,15319,
                          15329,15331,15349,15359,15361,15373,15377,15383,15391,15401,
                          15413,15427,15439,15443,15451,15461,15467,15473,15493,15497,
                          15511,15527,15541,15551,15559,15569,15581,15583,15601,15607,
                          15619,15629,15641,15643,15647,15649,15661,15667,15671,15679,
                          15683,15727,15731,15733,15737,15739,15749,15761,15767,15773,
                          15787,15791,15797,15803,15809,15817,15823,15859,15877,15881,
                          15887,15889,15901,15907,15913,15919,15923,15937,15959,15971,
                          15973,15991,16001,16007,16033,16057,16061,16063,16067,16069,
                          16073,16087,16091,16097,16103,16111,16127,16139,16141,16183,
                          16187,16189,16193,16217,16223,16229,16231,16249,16253,16267,
                          16273,16301,16319,16333,16339,16349,16361,16363,16369,16381,
                          16411,16417,16421,16427,16433,16447,16451,16453,16477,16481,
                          16487,16493,16519,16529,16547,16553,16561,16567,16573,16603,
                          16607,16619,16631,16633,16649,16651,16657,16661,16673,16691,
                          16693,16699,16703,16729,16741,16747,16759,16763,16787,16811,
                          16823,16829,16831,16843,16871,16879,16883,16889,16901,16903,
                          16921,16927,16931,16937,16943,16963,16979,16981,16987,16993,
                          17011,17021,17027,17029,17033,17041,17047,17053,17077,17093,
                          17099,17107,17117,17123,17137,17159,17167,17183,17189,17191,
                          17203,17207,17209,17231,17239,17257,17291,17293,17299,17317,
                          17321,17327,17333,17341,17351,17359,17377,17383,17387,17389,
                          17393,17401,17417,17419,17431,17443,17449,17467,17471,17477,
                          17483,17489,17491,17497,17509,17519,17539,17551,17569,17573,
                          17579,17581,17597,17599,17609,17623,17627,17657,17659,17669,
                          17681,17683,17707,17713,17729,17737,17747,17749,17761,17783,
                          17789,17791,17807,17827,17837,17839,17851,17863,17881,17891,
                          17903,17909,17911,17921,17923,17929,17939,17957,17959,17971,
                          17977,17981,17987,17989,18013,18041,18043,18047,18049,18059,
                          18061,18077,18089,18097,18119,18121,18127,18131,18133,18143,
                          18149,18169,18181,18191,18199,18211,18217,18223,18229,18233,
                          18251,18253,18257,18269,18287,18289,18301,18307,18311,18313,
                          18329,18341,18353,18367,18371,18379,18397,18401,18413,18427,
                          18433,18439,18443,18451,18457,18461,18481,18493,18503,18517,
                          18521,18523,18539,18541,18553,18583,18587,18593,18617,18637,
                          18661,18671,18679,18691,18701,18713,18719,18731,18743,18749,
                          18757,18773,18787,18793,18797,18803,18839,18859,18869,18899,
                          18911,18913,18917,18919,18947,18959,18973,18979,19001,19009,
                          19013,19031,19037,19051,19069,19073,19079,19081,19087,19121,
                          19139,19141,19157,19163,19181,19183,19207,19211,19213,19219,
                          19231,19237,19249,19259,19267,19273,19289,19301,19309,19319,
                          19333,19373,19379,19381,19387,19391,19403,19417,19421,19423,
                          19427,19429,19433,19441,19447,19457,19463,19469,19471,19477,
                          19483,19489,19501,19507,19531,19541,19543,19553,19559,19571,
                          19577,19583,19597,19603,19609,19661,19681,19687,19697,19699,
                          19709,19717,19727,19739,19751,19753,19759,19763,19777,19793,
                          19801,19813,19819,19841,19843,19853,19861,19867,19889,19891,
                          19913,19919,19927,19937,19949,19961,19963,19973,19979,19991,
                          19993,19997};
        while(scanf("%d",&n)!=EOF)
        {
            maxp=0;
            while(n--)
            {
                scanf("%d",&a);
                for(j=2262; j>=0; j--)
                {
                    if(prime[j]<=a)
                    {
                        if(a%prime[j]==0)
                        {
                            if(prime[j]>maxp)
                            {
                                maxp=prime[j];
                                maxn=a;
                                break;
                            }
                        }
                    }
                }
            }
            printf("%d\n",maxn);
        }
        return 0;
    }
    
         应该还有其他的办法,我再去看看。

       新套路:把每个数的最大素因子找出来。间接打表。 *-* .

    #include<iostream>
    #include<cstdio>
    #include<cstring>
    #define N 200010
    using namespace std;
    int s[N];
    int main()
    {
        int n,a,k=2,maxn,maxp;
        memset(s,0,sizeof(s));
        s[1]=1;
        for(int i=2;i<N;i++)
        {
            if(!s[i])
            {
                s[i]=k++;
                for(int j=i+i;j<N;j+=i)
                {
                    s[j]=s[i];
                }
            }
        }
        while(scanf("%d",&n)!=EOF)
        {
            maxp=-1;
            while(n--)
            {
                scanf("%d",&a);
                if(s[a]>maxp)
                {
                    maxp=s[a];
                    maxn=a;
                }
            }
            printf("%d\n",maxn);
        }
        return 0;
    }
    



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