A. Theatre Square | CodeForces

Problem Link : A. Theatre Square

Solution :
      Develop by Samsus Salehin Sabbir 

1. #include <iostream>
2. using namespace std;
3. 
   
4. int main() {
5. // your code goes here
6. long long  row , col , m,n,a;
7. cin >> n >> m >> a;
8. row = n/a;
9. if(n%a) row++;
10. col = m/a;
11. if(m%a) col++;
12. cout << row*col << endl;
13. return 0;
14. }