백준 10179 자바 - 쿠폰

// 쿠폰
package Bronze_III_3;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Ex10179 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int t = Integer.parseInt(br.readLine());

        for (int i = 0; i < t; i++) {
            double price = Double.parseDouble(br.readLine());
            System.out.printf("$%.2f\n", price * 0.8);
        }
    }
}