BOJ 10179 - 쿠폰 [C++]

문제

링크

풀이

#include <iostream>
#include <iomanip>
using namespace std;
 
void solve(void) {
  double n; cin >> n;
 
  cout << "$" << fixed << setprecision(2) << n * 0.8 << "\n";
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  int t; cin >> t;
  while (t--) solve();
  return 0;
}