"Usaco" Prime palindromes (violence, violence and violence)

Write down all the qualifying numbers and sweep them all over again, and this type of number is up to 2W.

/*id:18906421lang:c++prog:pprime*/#include <cmath> #include <cstdio> #include <vector> #include <algorithm>using namespace Std;const int maxn = 20005;int A,b;int cnt = 0;int prime[maxn];bool is_prime (int v) {i    NT E = sqrt (v) + 1;    for (int i = 2; I <= e; i++) if (v i = = 0) return false; return true;}        int solve1 () {//1 2 for (int i = 1; I <= 9; i++) {int v1 = i;        int v2 = i * ten + i;        if (Is_prime (v1)) prime[cnt++] = v1;    if (Is_prime (v2)) prime[cnt++] = v2;   }}int solve2 () {//3 4 for (int i = 1, i <= 9; i++) {for (int j = 0; J <= 9; j + +) {int v1 = i * 100            + J * + I;            int v2 = i * + + J * + + J * + I;            if (Is_prime (v1)) prime[cnt++] = v1;        if (Is_prime (v2)) prime[cnt++] = v2;  }}}int Solve3 () {//5 6 for (int i = 1, i <= 9; i++) {for (int j = 0; J <= 9; j + +) {for (int k = 0; K <= 9;  k++) {int v1 = i * 10000+ J * + K * + + J * + I;                int v2 = i * 100000 + J * 10000 + K * + K * + J * + I;                if (Is_prime (v1)) prime[cnt++] = v1;            if (Is_prime (v2)) prime[cnt++] = v2; }}}}int Solve4 () {//7 8 for (int i = 1, i <= 9; i++) {for (int j = 0; J <= 9; j + +) {fo R (int k = 0; k <= 9; k++) {for (int l = 0; l <= 9; l++) {int v1 = i * 1000000 + j                    * 100000 + K * 10000 + L * + K * + + J * + I;                    int v2 = i * 10000000 + J * 1000000 + K * 100000 + L * 10000 + L * + K * + + J * + I;                    if (Is_prime (v1)) prime[cnt++] = v1;                if (Is_prime (v2)) prime[cnt++] = v2;    }}}}}void init () {solve1 (); Solve2 (); Solve3 (); Solve4 (); Sort (prime,prime + cnt);}    int main () {freopen ("pprime.in", "R", stdin);    Freopen ("Pprime.out", "w", stdout);    Init (); scanf ("%d%d", &AMP;A,&AMP;B); for (int i = 0; i < cnt; i++) if (Prime[i] >= a && prime[i] <= b) printf ("%d\n", Prime[i])    ; return 0;}

"Usaco" Prime palindromes (violence, violence and violence)