백준 30328 자바 - Java Warriors

// Java Warriors
package Bronze_V_5;

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

public class Ex30328 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        System.out.println(n * 4000);
    }
}