문제

링크

풀이

#include <iostream>
using namespace std;
 
bool solve(void) {
  int a1, a0; cin >> a1 >> a0;
  int c1, c2; cin >> c1 >> c2;
  int n0; cin >> n0;
 
  return c1 <= a1 && a1 <= c2 && c1*n0 <= a1*n0+a0 && a1*n0+a0 <= c2*n0;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  cout << solve();
  return 0;
}