[브론즈 Ⅳ] 3046번 :: R2 / Java

 

 

 

 

문제

https://www.acmicpc.net/problem/3046

3046번: R2

 

 

 

 

 

코드

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int R1 = scan.nextInt();
		int S = scan.nextInt();
		
		System.out.println((S*2)-R1);
	}
}

 

 

 

 

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