func_code_string: #include <bits/stdc++.h>   using namespace std;   int c[2][501][501];   int main() {     int n, m, b, mod;     scanf( %d%d%d%d , &n, &m, &b, &mod);     int a[n + 1];     for (long i = 1; i <= n; i++) scanf( %d , &a[i]);     memset(c, 0, sizeof(c));     c[0][0][0] = 1;     for (long i = 1; i <= n; i++)       for (long j = 0; j <= m; j++)         for (long k = 0; k <= b; k++) {           c[(i & 1)][j][k] = c[(i & 1) ^ 1][j][k];           if (k >= a[i] && j > 0) c[(i & 1)][j][k] += c[(i & 1)][j - 1][k - a[i]];           c[(i & 1)][j][k] = c[(i & 1)][j][k] % mod;         }     int ans = 0;     for (int i = 0; i <= b; i++) {       ans += c[n & 1][m][i];       ans = ans % mod;     }     printf( %d n , ans);   }   