#include<stdio.h>
int readint(){
int f=1, x=0; char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
return f*x;
}
void writeint(int x){
if(!x)return ;
writeint(x/10);
putchar(x%10+'0');
}
int main(){
int n, a, b;
n = readint();
while(n--){
a = readint(), b = readint();
writeint(a+b);
puts("");
}
return 0;
}