BOJ 24573 - Good Fours and Good Fives [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  int n; cin >> n;
 
  int ans = 0;
  for (int i=0; i<=n/5; i++) {
    if ((n-5*i) % 4) continue;
    ans++;
  }
  cout << ans;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}