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문제

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코드

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import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		
		while(true) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if((a == 0) && (b == 0)) {
				break;
			}
			
			System.out.println(a+b);
		}
		
		sc.close();
	}

}