func_code_string: #include <bits/stdc++.h>   #pragma comment(linker,  /STACK:134217728 )   using namespace std;   int main() {     int p[4], a, b;     for (int i(0); i <= (4 - 1); ++i) scanf( %d , &p[i]);     scanf( %d%d , &a, &b);     int res(0);     for (int i = a; i <= b; ++i) {       int perm[] = {0, 1, 2, 3};       int k(0);       do {         if (((((i % p[perm[0]]) % p[perm[1]]) % p[perm[2]]) % p[perm[3]]) == i)           ++k;       } while (next_permutation(perm, perm + 4));       if (k >= 7) ++res;     }     printf( %d n , res);     return 0;   }   