import java.util.Scanner;


public class Main {
public static void main(String[] rgs){
//系統輸出的
Scanner in=new Scanner(System.in);
int n=-1;
int a = 0;

int b = 0;

//不明白,為什麼這裡必須使用in.hasNextInt()作為判斷值,如果其他的判斷值,一定是wrong

while(in.hasNextInt()){
n=in.nextInt();
int[] sum=new int[n];
for(int i=0;i<n;i++){
a = in.nextInt();
b = in.nextInt();
sum[i]=a+b;
}
for (int s : sum) {
System.out.println(s);

}
}

}

}

import java.util.Scanner;

public class Main {
	public static void main(String[] rgs){
		//系統輸出的
		Scanner in=new Scanner(System.in);
		int n=-1;
		int a = 0;
		int b = 0;
		while(in.hasNextInt()){
			n=in.nextInt();
			int[] sum=new int[n];
			for(int i=0;i<n;i++){
				a = in.nextInt();
				b = in.nextInt();
				sum[i]=a+b;
			}
			for (int s : sum) {
				System.out.println(s);
				
			}
		}
		
	}
}