func_code_string: #include <bits/stdc++.h>   using namespace std;   long n, c[long(1e7 + 50)], cnt;   void sieve() {     c[1] = 1;     for (long i = 2; i <= long(1e7); ++i)       if (!c[i])         for (long j = 2; i * j <= long(1e7); ++j) c[i * j] = 1;   }   bool Prime(long x) {     if (x < long(1e7)) {       if (c[x]) return false;       return true;     }     for (long i = 2; i <= trunc(sqrt(x)); ++i)       if (!(x % i)) return false;     return true;   }   int main() {     scanf( %ld , &n);     if (n <= 7)       printf( 1 n%ld , n);     else {       printf( 3 n );       sieve();       n -= 3;       for (long i = n; i >= 1; --i)         if (Prime(i) && Prime(n - i)) {           printf( %ld %ld %ld , i, n - i, 3);           return 0;         }     }     return 0;   }   