Codeforces Solutions in C Language -1A Theatre Square

This post is related with the codeforces problem -1A Theatre Square.
The Problem screenshot is given below:

1A-Theatre Square solution- sfsolv

Solutions In C Language:

#include<stdio.h>main(){ long long int x,y,z,a,b; scanf("%lld%lld%lld",&x,&y,&z); if(x%z==0){ a=(x/z); } else if(x%z!=0){ a=(x/z)+1; } if(y%z==0){ b=(y/z); } else if(y%z!=0){ b=(y/z)+1; } printf("%lld\n",a*b); }