public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int t = sc . nextInt ( ) ;
  int l [ ] = new int [ t ] ;
  int r [ ] = new int [ t ] ;
  int left = 0 , right = 0 ;
  for ( int i = 0 ;
  i < t ;
  i ++ ) {
    l [ i ] = sc . nextInt ( ) ;
    r [ i ] = sc . nextInt ( ) ;
    left += l [ i ] ;
    right += r [ i ] ;
  }
  int max = ( int ) Math . abs ( left - right ) ;
  int idx = 0 ;
  for ( int i = 0 ;
  i < t ;
  i ++ ) {
    int c = left - l [ i ] + r [ i ] ;
    int d = right - r [ i ] + l [ i ] ;
    int abs1 = ( int ) Math . abs ( c - d ) ;
    if ( abs1 > max ) {
      max = abs1 ;
      idx = i + 1 ;
    }
  }
  System . out . println ( idx ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int t = sc . nextInt ( ) ; int l [ ] = new int [ t ] ; int r [ ] = new int [ t ] ; int left = 0 , right = 0 ; for ( int i = 0 ; i < t ; i ++ ) { l [ i ] = sc . nextInt ( ) ; r [ i ] = sc . nextInt ( ) ; left += l [ i ] ; right += r [ i ] ; } int max = ( int ) Math . abs ( left - right ) ; int idx = 0 ; for ( int i = 0 ; i < t ; i ++ ) { int c = left - l [ i ] + r [ i ] ; int d = right - r [ i ] + l [ i ] ; int abs1 = ( int ) Math . abs ( c - d ) ; if ( abs1 > max ) { max = abs1 ; idx = i + 1 ; } } System . out . println ( idx ) ; }
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