public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int [ ] freqX = new int [ 109 ] , freqY = new int [ 109 ] ;
  int n ;
  n = input . nextInt ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    int x , y ;
    x = input . nextInt ( ) ;
    y = input . nextInt ( ) ;
    freqX [ x ] ++ ;
    freqY [ y ] ++ ;
  }
  int cntX = 0 ;
  int cntY = 0 ;
  for ( int i = 0 ;
  i <= 100 ;
  i ++ ) cntX += Boolean . compare ( ( freqX [ i ] > 0 ) , false ) ;
  for ( int i = 0 ;
  i <= 100 ;
  i ++ ) cntY += Boolean . compare ( ( freqY [ i ] > 0 ) , false ) ;
  System . out . println ( Math . min ( cntX , cntY ) ) ;
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int [ ] freqX = new int [ 109 ] , freqY = new int [ 109 ] ; int n ; n = input . nextInt ( ) ; for ( int i = 0 ; i < n ; i ++ ) { int x , y ; x = input . nextInt ( ) ; y = input . nextInt ( ) ; freqX [ x ] ++ ; freqY [ y ] ++ ; } int cntX = 0 ; int cntY = 0 ; for ( int i = 0 ; i <= 100 ; i ++ ) cntX += Boolean . compare ( ( freqX [ i ] > 0 ) , false ) ; for ( int i = 0 ; i <= 100 ; i ++ ) cntY += Boolean . compare ( ( freqY [ i ] > 0 ) , false ) ; System . out . println ( Math . min ( cntX , cntY ) ) ; }
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