문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  int score; cin >> score;
 
  if (score >= 90) cout << 'A';
  else if (score >= 80) cout << 'B';
  else if (score >= 70) cout << 'C';
  else if (score >= 60) cout << 'D';
  else cout << 'F';
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}