func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, m, s;   long long row, col;   long long sr, sc;   long long tr, tc;   int main() {     scanf( %I64d %I64d %I64d , &n, &m, &s);     row = n / s + 1;     if (n % s == 0) row--;     col = m / s + 1;     if (m % s == 0) col--;     sr = n - ((row - 1) * s + 1);     sc = m - ((col - 1) * s + 1);     tr = (sr + 1) * row;     tc = (sc + 1) * col;     printf( %I64d n , min(n * m, tr * tc));     return 0;   }   