5 500

5
7
11
101
131
151
181
191
313
353
373
383

#include <iostream>
#include <cstring>
using namespace std;
#define maxn 9989899+1//最大的结果为9989899
bool isPrime[maxn+1];
int ans[800];//编程得满足条件的数字共781个
void getPrime()
{
    memset(isPrime,true,sizeof(isPrime));
    for (int i=2;i<maxn ;i++ )
    {
        if(isPrime[i])
        {
            //cout<<i<<endl;
            for (int j=i+i;j<maxn ;j+=i )
            {
                isPrime[j]=false;
            }
        }
    }
}
bool isHuiwen(int n)
{
    int sum=0,nn=n;
    while (n)
    {
        sum=sum*10+n%10;
        n/=10;
    }
    return sum==nn;
}
int main()
{
   int a,b;
   getPrime();
   int k=0;
   for(int i=2;i<maxn;i++)
   {
       if(isPrime[i]&&isHuiwen(i))
        ans[k++]=i;
   }
   //cout<<k<<endl;
   while (cin>>a>>b)
   {
        for (int i=0;i<=k ;i++ )
        {
            if(ans[i]<a)
                continue;
            else if(ans[i]>b)
                break;
            else
                cout<<ans[i]<<endl;
        }
        cout<<endl;
   }

    return 0;
}

AC代码2:(以前的代码,可怕呀)

#include <stdio.h>
int sushu(int n);
int huiwen(int n);
int main()
{
    int i,x=0,a,b,t;
    int h[780]= {      5,      7,     11,    101,    131,    151,    181,    191,    313,    353,
                       373,    383,    727,    757,    787,    797,    919,    929,  10301,  10501,
                       10601,  11311,  11411,  12421,  12721,  12821,  13331,  13831,  13931,  14341,
                       14741,  15451,  15551,  16061,  16361,  16561,  16661,  17471,  17971,  18181,
                       18481,  19391,  19891,  19991,  30103,  30203,  30403,  30703,  30803,  31013,
                       31513,  32323,  32423,  33533,  34543,  34843,  35053,  35153,  35353,  35753,
                       36263,  36563,  37273,  37573,  38083,  38183,  38783,  39293,  70207,  70507,
                       70607,  71317,  71917,  72227,  72727,  73037,  73237,  73637,  74047,  74747,
                       75557,  76367,  76667,  77377,  77477,  77977,  78487,  78787,  78887,  79397,
                       79697,  79997,  90709,  91019,  93139,  93239,  93739,  94049,  94349,  94649,
                       94849,  94949,  95959,  96269,  96469,  96769,  97379,  97579,  97879,  98389,
                       98689,1003001,1008001,1022201,1028201,1035301,1043401,1055501,1062601,1065601,
                       1074701,1082801,1085801,1092901,1093901,1114111,1117111,1120211,1123211,1126211,
                       1129211,1134311,1145411,1150511,1153511,1160611,1163611,1175711,1177711,1178711,
                       1180811,1183811,1186811,1190911,1193911,1196911,1201021,1208021,1212121,1215121,
                       1218121,1221221,1235321,1242421,1243421,1245421,1250521,1253521,1257521,1262621,
                       1268621,1273721,1276721,1278721,1280821,1281821,1286821,1287821,1300031,1303031,
                       1311131,1317131,1327231,1328231,1333331,1335331,1338331,1343431,1360631,1362631,
                       1363631,1371731,1374731,1390931,1407041,1409041,1411141,1412141,1422241,1437341,
                       1444441,1447441,1452541,1456541,1461641,1463641,1464641,1469641,1486841,1489841,
                       1490941,1496941,1508051,1513151,1520251,1532351,1535351,1542451,1548451,1550551,
                       1551551,1556551,1557551,1565651,1572751,1579751,1580851,1583851,1589851,1594951,
                       1597951,1598951,1600061,1609061,1611161,1616161,1628261,1630361,1633361,1640461,
                       1643461,1646461,1654561,1657561,1658561,1660661,1670761,1684861,1685861,1688861,
                       1695961,1703071,1707071,1712171,1714171,1730371,1734371,1737371,1748471,1755571,
                       1761671,1764671,1777771,1793971,1802081,1805081,1820281,1823281,1824281,1826281,
                       1829281,1831381,1832381,1842481,1851581,1853581,1856581,1865681,1876781,1878781,
                       1879781,1880881,1881881,1883881,1884881,1895981,1903091,1908091,1909091,1917191,
                       1924291,1930391,1936391,1941491,1951591,1952591,1957591,1958591,1963691,1968691,
                       1969691,1970791,1976791,1981891,1982891,1984891,1987891,1988891,1993991,1995991,
                       1998991,3001003,3002003,3007003,3016103,3026203,3064603,3065603,3072703,3073703,
                       3075703,3083803,3089803,3091903,3095903,3103013,3106013,3127213,3135313,3140413,
                       3155513,3158513,3160613,3166613,3181813,3187813,3193913,3196913,3198913,3211123,
                       3212123,3218123,3222223,3223223,3228223,3233323,3236323,3241423,3245423,3252523,
                       3256523,3258523,3260623,3267623,3272723,3283823,3285823,3286823,3288823,3291923,
                       3293923,3304033,3305033,3307033,3310133,3315133,3319133,3321233,3329233,3331333,
                       3337333,3343433,3353533,3362633,3364633,3365633,3368633,3380833,3391933,3392933,
                       3400043,3411143,3417143,3424243,3425243,3427243,3439343,3441443,3443443,3444443,
                       3447443,3449443,3452543,3460643,3466643,3470743,3479743,3485843,3487843,3503053,
                       3515153,3517153,3528253,3541453,3553553,3558553,3563653,3569653,3586853,3589853,
                       3590953,3591953,3594953,3601063,3607063,3618163,3621263,3627263,3635363,3643463,
                       3646463,3670763,3673763,3680863,3689863,3698963,3708073,3709073,3716173,3717173,
                       3721273,3722273,3728273,3732373,3743473,3746473,3762673,3763673,3765673,3768673,
                       3769673,3773773,3774773,3781873,3784873,3792973,3793973,3799973,3804083,3806083,
                       3812183,3814183,3826283,3829283,3836383,3842483,3853583,3858583,3863683,3864683,
                       3867683,3869683,3871783,3878783,3893983,3899983,3913193,3916193,3918193,3924293,
                       3927293,3931393,3938393,3942493,3946493,3948493,3964693,3970793,3983893,3991993,
                       3994993,3997993,3998993,7014107,7035307,7036307,7041407,7046407,7057507,7065607,
                       7069607,7073707,7079707,7082807,7084807,7087807,7093907,7096907,7100017,7114117,
                       7115117,7118117,7129217,7134317,7136317,7141417,7145417,7155517,7156517,7158517,
                       7159517,7177717,7190917,7194917,7215127,7226227,7246427,7249427,7250527,7256527,
                       7257527,7261627,7267627,7276727,7278727,7291927,7300037,7302037,7310137,7314137,
                       7324237,7327237,7347437,7352537,7354537,7362637,7365637,7381837,7388837,7392937,
                       7401047,7403047,7409047,7415147,7434347,7436347,7439347,7452547,7461647,7466647,
                       7472747,7475747,7485847,7486847,7489847,7493947,7507057,7508057,7518157,7519157,
                       7521257,7527257,7540457,7562657,7564657,7576757,7586857,7592957,7594957,7600067,
                       7611167,7619167,7622267,7630367,7632367,7644467,7654567,7662667,7665667,7666667,
                       7668667,7669667,7674767,7681867,7690967,7693967,7696967,7715177,7718177,7722277,
                       7729277,7733377,7742477,7747477,7750577,7758577,7764677,7772777,7774777,7778777,
                       7782877,7783877,7791977,7794977,7807087,7819187,7820287,7821287,7831387,7832387,
                       7838387,7843487,7850587,7856587,7865687,7867687,7868687,7873787,7884887,7891987,
                       7897987,7913197,7916197,7930397,7933397,7935397,7938397,7941497,7943497,7949497,
                       7957597,7958597,7960697,7977797,7984897,7985897,7987897,7996997,9002009,9015109,
                       9024209,9037309,9042409,9043409,9045409,9046409,9049409,9067609,9073709,9076709,
                       9078709,9091909,9095909,9103019,9109019,9110119,9127219,9128219,9136319,9149419,
                       9169619,9173719,9174719,9179719,9185819,9196919,9199919,9200029,9209029,9212129,
                       9217129,9222229,9223229,9230329,9231329,9255529,9269629,9271729,9277729,9280829,
                       9286829,9289829,9318139,9320239,9324239,9329239,9332339,9338339,9351539,9357539,
                       9375739,9384839,9397939,9400049,9414149,9419149,9433349,9439349,9440449,9446449,
                       9451549,9470749,9477749,9492949,9493949,9495949,9504059,9514159,9526259,9529259,
                       9547459,9556559,9558559,9561659,9577759,9583859,9585859,9586859,9601069,9602069,
                       9604069,9610169,9620269,9624269,9626269,9632369,9634369,9645469,9650569,9657569,
                       9670769,9686869,9700079,9709079,9711179,9714179,9724279,9727279,9732379,9733379,
                       9743479,9749479,9752579,9754579,9758579,9762679,9770779,9776779,9779779,9781879,
                       9782879,9787879,9788879,9795979,9801089,9807089,9809089,9817189,9818189,9820289,
                       9822289,9836389,9837389,9845489,9852589,9871789,9888889,9889889,9896989,9902099,
                       9907099,9908099,9916199,9918199,9919199,9921299,9923299,9926299,9927299,9931399,
                       9932399,9935399,9938399,9957599,9965699,9978799,9980899,9981899,9989899
                };
    while (scanf("%d %d",&a,&b)!=EOF)
    {
        if (a>b)
        {
            t=a;
            a=b;
            b=a;
        }
        if (b>9989899) b=9989899;
        for (i=0;i<780;i++)
        {
            if (h[i]>=a&&h[i]<=b)
            printf("%d\n",h[i]);
        }
        printf("\n");
    }

    return 0;
}
/*
int sushu(int n)
{
    int i;
    if (n<=1) return 0;
    for (i=2; i*i<n+1; i++)
    {
        if (n%i==0)
            return 0;
    }
    return 1;
}

int huiwen(int n)
{
    int x=0,tempn;
    tempn=n;
    while (n)
    {
        x=x*10+n%10;
        n/=10;
    }
    if (x==tempn) return 1;
    else return 0;
}

*/