#include <cstdio>
using namespace std;
inline long long inp()
{
long long ret=0,f=1;char ch=getchar();
while (ch<'0'||ch>'9') {if (ch=='-') f=-f;ch=getchar();}
while (ch>='0'&&ch<='9') ret=ret*10+ch-'0',ch=getchar();
return ret*f;
}
int main()
{
long long a,b,x;
x=inp();
for (register long long i=0;i<x;++i)
{
a=inp(); b=inp();
printf("%lld\n",a+b);
}
return 0;
}