#include<stdio.h>
using namespace std;
int main(){
	freopen("1001.in","r",stdin);
	
    int a,b,c;
    while(scanf("%d %d",&a,&b) != -1){
        c = a+b;
        printf("%d",c);
    }
}
/**************************************************************
	Problem: 1001
	User: long
	Language: C
	Result: Compile Error
****************************************************************/