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169 lines
10 KiB
169 lines
10 KiB
#include <bits/stdc++.h>
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using namespace std;
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vector<int> nums = {2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929,
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10301,
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10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14741, 15451,
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15551,
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16061, 16361, 16561, 16661, 17471, 17971, 18181, 18481, 19391, 19891, 19991, 30103, 30203,
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30403,
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30703, 30803, 31013, 31513, 32323, 32423, 33533, 34543, 34843, 35053, 35153, 35353, 35753,
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36263,
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36563, 37273, 37573, 38083, 38183, 38783, 39293, 70207, 70507, 70607, 71317, 71917, 72227,
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72727,
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73037, 73237, 73637, 74047, 74747, 75557, 76367, 76667, 77377, 77477, 77977, 78487, 78787,
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78887,
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79397, 79697, 79997, 90709, 91019, 93139, 93239, 93739, 94049, 94349, 94649, 94849, 94949,
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95959,
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96269, 96469, 96769, 97379, 97579, 97879, 98389, 98689, 1003001, 1008001, 1022201, 1028201,
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1035301,
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1043401, 1055501, 1062601, 1065601, 1074701, 1082801, 1085801, 1092901, 1093901, 1114111,
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1117111,
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1120211, 1123211, 1126211, 1129211, 1134311, 1145411, 1150511, 1153511, 1160611, 1163611,
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1175711,
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1177711, 1178711, 1180811, 1183811, 1186811, 1190911, 1193911, 1196911, 1201021, 1208021,
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1212121,
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1215121, 1218121, 1221221, 1235321, 1242421, 1243421, 1245421, 1250521, 1253521, 1257521,
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1262621,
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1268621, 1273721, 1276721, 1278721, 1280821, 1281821, 1286821, 1287821, 1300031, 1303031,
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1311131,
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1317131, 1327231, 1328231, 1333331, 1335331, 1338331, 1343431, 1360631, 1362631, 1363631,
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1371731,
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1374731, 1390931, 1407041, 1409041, 1411141, 1412141, 1422241, 1437341, 1444441, 1447441,
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1452541,
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1456541, 1461641, 1463641, 1464641, 1469641, 1486841, 1489841, 1490941, 1496941, 1508051,
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1513151,
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1520251, 1532351, 1535351, 1542451, 1548451, 1550551, 1551551, 1556551, 1557551, 1565651,
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1572751,
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1579751, 1580851, 1583851, 1589851, 1594951, 1597951, 1598951, 1600061, 1609061, 1611161,
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1616161,
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1628261, 1630361, 1633361, 1640461, 1643461, 1646461, 1654561, 1657561, 1658561, 1660661,
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1670761,
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1684861, 1685861, 1688861, 1695961, 1703071, 1707071, 1712171, 1714171, 1730371, 1734371,
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1737371,
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1748471, 1755571, 1761671, 1764671, 1777771, 1793971, 1802081, 1805081, 1820281, 1823281,
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1824281,
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1826281, 1829281, 1831381, 1832381, 1842481, 1851581, 1853581, 1856581, 1865681, 1876781,
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1878781,
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1879781, 1880881, 1881881, 1883881, 1884881, 1895981, 1903091, 1908091, 1909091, 1917191,
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1924291,
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1930391, 1936391, 1941491, 1951591, 1952591, 1957591, 1958591, 1963691, 1968691, 1969691,
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1970791,
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1976791, 1981891, 1982891, 1984891, 1987891, 1988891, 1993991, 1995991, 1998991, 3001003,
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3002003,
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3007003, 3016103, 3026203, 3064603, 3065603, 3072703, 3073703, 3075703, 3083803, 3089803,
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3091903,
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3095903, 3103013, 3106013, 3127213, 3135313, 3140413, 3155513, 3158513, 3160613, 3166613,
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3181813,
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3187813, 3193913, 3196913, 3198913, 3211123, 3212123, 3218123, 3222223, 3223223, 3228223,
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3233323,
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3236323, 3241423, 3245423, 3252523, 3256523, 3258523, 3260623, 3267623, 3272723, 3283823,
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3285823,
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3286823, 3288823, 3291923, 3293923, 3304033, 3305033, 3307033, 3310133, 3315133, 3319133,
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3321233,
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3329233, 3331333, 3337333, 3343433, 3353533, 3362633, 3364633, 3365633, 3368633, 3380833,
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3391933,
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3392933, 3400043, 3411143, 3417143, 3424243, 3425243, 3427243, 3439343, 3441443, 3443443,
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3444443,
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3447443, 3449443, 3452543, 3460643, 3466643, 3470743, 3479743, 3485843, 3487843, 3503053,
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3515153,
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3517153, 3528253, 3541453, 3553553, 3558553, 3563653, 3569653, 3586853, 3589853, 3590953,
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3591953,
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3594953, 3601063, 3607063, 3618163, 3621263, 3627263, 3635363, 3643463, 3646463, 3670763,
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3673763,
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3680863, 3689863, 3698963, 3708073, 3709073, 3716173, 3717173, 3721273, 3722273, 3728273,
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3732373,
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3743473, 3746473, 3762673, 3763673, 3765673, 3768673, 3769673, 3773773, 3774773, 3781873,
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3784873,
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3792973, 3793973, 3799973, 3804083, 3806083, 3812183, 3814183, 3826283, 3829283, 3836383,
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3842483,
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3853583, 3858583, 3863683, 3864683, 3867683, 3869683, 3871783, 3878783, 3893983, 3899983,
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3913193,
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3916193, 3918193, 3924293, 3927293, 3931393, 3938393, 3942493, 3946493, 3948493, 3964693,
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3970793,
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3983893, 3991993, 3994993, 3997993, 3998993, 7014107, 7035307, 7036307, 7041407, 7046407,
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7057507,
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7065607, 7069607, 7073707, 7079707, 7082807, 7084807, 7087807, 7093907, 7096907, 7100017,
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7114117,
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7115117, 7118117, 7129217, 7134317, 7136317, 7141417, 7145417, 7155517, 7156517, 7158517,
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7159517,
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7177717, 7190917, 7194917, 7215127, 7226227, 7246427, 7249427, 7250527, 7256527, 7257527,
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7261627,
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7267627, 7276727, 7278727, 7291927, 7300037, 7302037, 7310137, 7314137, 7324237, 7327237,
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7347437,
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7352537, 7354537, 7362637, 7365637, 7381837, 7388837, 7392937, 7401047, 7403047, 7409047,
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7415147,
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7434347, 7436347, 7439347, 7452547, 7461647, 7466647, 7472747, 7475747, 7485847, 7486847,
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7489847,
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7493947, 7507057, 7508057, 7518157, 7519157, 7521257, 7527257, 7540457, 7562657, 7564657,
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7576757,
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7586857, 7592957, 7594957, 7600067, 7611167, 7619167, 7622267, 7630367, 7632367, 7644467,
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7654567,
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7662667, 7665667, 7666667, 7668667, 7669667, 7674767, 7681867, 7690967, 7693967, 7696967,
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7715177,
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7718177, 7722277, 7729277, 7733377, 7742477, 7747477, 7750577, 7758577, 7764677, 7772777,
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7774777,
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7778777, 7782877, 7783877, 7791977, 7794977, 7807087, 7819187, 7820287, 7821287, 7831387,
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7832387,
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7838387, 7843487, 7850587, 7856587, 7865687, 7867687, 7868687, 7873787, 7884887, 7891987,
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7897987,
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7913197, 7916197, 7930397, 7933397, 7935397, 7938397, 7941497, 7943497, 7949497, 7957597,
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7958597,
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7960697, 7977797, 7984897, 7985897, 7987897, 7996997, 9002009, 9015109, 9024209, 9037309,
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9042409,
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9043409, 9045409, 9046409, 9049409, 9067609, 9073709, 9076709, 9078709, 9091909, 9095909,
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9103019,
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9109019, 9110119, 9127219, 9128219, 9136319, 9149419, 9169619, 9173719, 9174719, 9179719,
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9185819,
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9196919, 9199919, 9200029, 9209029, 9212129, 9217129, 9222229, 9223229, 9230329, 9231329,
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9255529,
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9269629, 9271729, 9277729, 9280829, 9286829, 9289829, 9318139, 9320239, 9324239, 9329239,
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9332339,
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9338339, 9351539, 9357539, 9375739, 9384839, 9397939, 9400049, 9414149, 9419149, 9433349,
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9439349,
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9440449, 9446449, 9451549, 9470749, 9477749, 9492949, 9493949, 9495949, 9504059, 9514159,
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9526259,
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9529259, 9547459, 9556559, 9558559, 9561659, 9577759, 9583859, 9585859, 9586859, 9601069,
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9602069,
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9604069, 9610169, 9620269, 9624269, 9626269, 9632369, 9634369, 9645469, 9650569, 9657569,
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9670769,
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9686869, 9700079, 9709079, 9711179, 9714179, 9724279, 9727279, 9732379, 9733379, 9743479,
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9749479,
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9752579, 9754579, 9758579, 9762679, 9770779, 9776779, 9779779, 9781879, 9782879, 9787879,
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9788879,
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9795979, 9801089, 9807089, 9809089, 9817189, 9818189, 9820289, 9822289, 9836389, 9837389,
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9845489,
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9852589, 9871789, 9888889, 9889889, 9896989, 9902099, 9907099, 9908099, 9916199, 9918199,
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9919199,
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9921299, 9923299, 9926299, 9927299, 9931399, 9932399, 9935399, 9938399, 9957599, 9965699,
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9978799,
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9980899, 9981899, 9989899};
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int main() {
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int a, b;
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cin >> a >> b;
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int start, end;
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//利用二分搜索找到第一个比a大的数字
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int l = 0, r = nums.size();
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while (l < r) {
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int mid = l + r >> 1;
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if (nums[mid] >= a) r = mid;
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else l = mid + 1;
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}
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start = l;
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//利用二分搜索找到第一个比b大的数字
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l = 0, r = nums.size();
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while (l < r) {
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int mid = l + r >> 1;
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if (nums[mid] >= b) r = mid;
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else l = mid + 1;
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}
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end = l;
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//加一个特判，因为可能有的测试数据正好是某个回文质数，此时，需要后移一个数
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if (nums[l] == b) end++;
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//输出二个位置之间的所有回文数
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for (int i = start; i < end; i++) cout << nums[i] << endl;
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return 0;
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} |