大神思维，强行暴力打表， 在此膜拜

ps：题目大意是，给定x和y（x<=y), 输出x和y区间内所有既是素数又是回文的数， (5<=x<=y<=1e8)
这道题很简单啊，求素数多简单，求回文多简单
题目数据范围过大，导致素数筛直接被舍弃， 直接使用一个for来判断的话，会超时（可能也不会，网上确实有直接判断能ac的题解， 但是我自己写的就超时， 难道是……人品问题 ！！）
看到了一个大神的题解，把所有结果打表求出来（虽然是1e8范围，但是其中既是素数又是回文的确实不多），放到一个数组里面，直接遍历一遍，满足大于等于x小于等于y的数就输出。
反正我想不出来!
打表的代码很简单，这里就不放了；

#include <bits/stdc++.h>
using namespace std;
int ans[800]={
   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};
int main()
{
   
    int x, y;
    while(~scanf("%d %d", &x, &y))
    {
   
        for(int i=0;i<782;i++)
        {
   
            if(ans[i]>=x&&ans[i]<=y)
            {
   
                printf("%d\n", ans[i]);
            }
        }
        printf("\n");
    }
    return 0;
}