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#include <iostream>
using namespace std ;
int N, M[55][55], C[55] ;
int main()
{
cin>>N;
for(int i = 1 ; i <= N*(N - 1)/2 - 1; ++ i)
{
int a, b;
cin >> a >> b ;
M[a][b] = M[b][a] = 1 ;
C[a] ++ ;
}
for(int i= 1 ; i <= N ; ++ i)
for(int j = i + 1 ; j <=N ; ++ j)
if(!M[i][j])
{
if(C[i] > C[j])
cout << i << ' ' << j << '\n' ;
else cout << j << ' ' << i << '\n' ;
}
return 0 ;
}