func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int a, b, c;     cin >> a >> b >> c;     long long int temp1, temp2, temp3;     temp1 = a / c;     temp2 = b / c;     if (a % c != 0) temp1++;     if (b % c != 0) temp2++;     cout << temp1 * temp2 << endl;     return 0;   }   