A-B

문제 1001번

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a, b;		
		
		a = sc.nextInt();
		b = sc.nextInt();
		System.out.println(a - b);
		
		sc.close();

	}

}

출력

3
2
1