#include <cstdio>
using namespace std;
template<class T>void read(T &x)
{
x=0;long long f=0;char ch=getchar();
while(ch<'0'||ch>'9') {f|=(ch=='-');ch=getchar();}
while(ch>='0'&&ch<='9'){x=(x<<1)+(x<<3)+(ch^48);ch=getchar();}
x=f?-x:x;
return;
}
int main()
{
long long a,b,x;
read(x);
for (register long long i=0;i<x;++i)
{
read(a); read(b);
printf("%lld\n",a+b);
}
return 0;
}