广场维修
广场维修
https://ac.nowcoder.com/acm/problem/22236
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
using namespace std;
int main(){
int n, m, a;
cin >> n >> m >> a;
int c = n / a;
int k = m / a;
if(n % a > 0) ++c;
if(m % a > 0) ++k;
cout << c * k;
return 0;
}
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