func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int tc, i, j, k, cs = 1, m, n, ans;     {       scanf( %d%d , &m, &n);       if (n > m) swap(m, n);       if (n == 1)         ans = m;       else if (n == 2) {         ans = (m / 4) * 4;         if (m % 4 == 1)           ans += 2;         else if (m % 4 == 2)           ans += 4;         else if (m % 4 == 3)           ans += 4;       } else {         ans = ((m + 1) / 2) * ((n + 1) / 2);         ans += (m / 2) * (n / 2);       }       printf( %d n , ans);     }     return 0;   }   