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;
#define ll long long int
int main()
{
ll n;
cin>>n;
ll a;
cin>>a;
if(a==0)
{
cout<<-1;
}
else
cout<<1 <<" " <<a+1;
return 0;
}
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