This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
ll t;cin>>t;
while(t--){
ll g,h;cin>>g>>h;
if(g==h)cout<<g<<" "<<h<<endl;
else{
if(__gcd(2,1)==g)cout<<1<<" "<<2<<endl;
else if(__gcd(2,0)==g)cout<<0<<" "<<2<<endl;
}
}
return 0;
}
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