[백준] 19698번 : 헛간 청약 - C++

https://www.acmicpc.net/problem/19698

#include <iostream>

using namespace std;

int main() {
    int n,w,h,l;
    cin>>n>>w>>h>>l;
    w/=l;
    h/=l;
    int sum=w*h;
    if(n>=sum) cout<<sum;
    else cout<<n;
}