func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, k;   int judge(int n) {     if (n == 2 || n == 3) return 1;     for (int i = 2; i <= sqrt(n); i++)       if (n % i == 0) return 0;     return 1;   }   int main() {     int i, j, m;     scanf( %d , &n);     if (judge(n))       printf( 1 n%d n , n);     else if (judge(n - 2))       printf( 2 n2 %d n , n - 2);     else if (judge(n - 4))       printf( 3 n2 2 %d n , n - 4);     else {       for (i = n - 2; i >= n - 300 && i >= 1; i--)         if (judge(i)) {           k = i;           m = n - i;           break;         }       for (j = 2; j <= m; j++) {         if (judge(j) && judge(m - j)) {           printf( 3 n%d %d %d n , k, j, n - i - j);           break;         }       }     }     return 0;   }   