#include <bits/stdc++.h> using namespace std;

struct A { int start;int end; };

int main() {

int n;
cin>>n;

A m[n];
int a[n],b[n];

for(int i=0;i<n;i++)
{
    cin>>a[i];
    cin>>b[i];
    m[i].start=a[i];
    m[i].end=b[i];
    
}

for(int i=0;i<n;i++)
cout<<m[i].start<<" "<<m[i].end<<endl;

return 0;

}