#include <bits/stdc++.h>
using namespace std;
class RelationClassifier
{
public : string isBijection( vector < int > domain, vector < int > range)
{
for ( int i = 0 ; i < domain.size ( ) ; i++ )
for ( int j = i+ 1 ; j < domain.size ( ) ; j++ )
if ( domain[ i] == domain[ j] || range[ i] == range[ j] )
return "Not" ;
return "Bijection" ;
}
} ;
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