public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int n = in . nextInt ( ) ;
  int [ ] left = new int [ n ] ;
  int [ ] right = new int [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    left [ i ] = in . nextInt ( ) ;
    right [ i ] = in . nextInt ( ) ;
  }
  int L = 0 , R = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    L += left [ i ] ;
    R += right [ i ] ;
  }
  int min = Math . abs ( L - R ) ;
  int minIndex = - 1 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    int Lnum = L - left [ i ] + right [ i ] ;
    int Rnum = R - right [ i ] + left [ i ] ;
    if ( Math . abs ( Lnum - Rnum ) > min ) {
      min = Math . abs ( Lnum - Rnum ) ;
      minIndex = i ;
    }
  }
  System . out . println ( minIndex + 1 ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int n = in . nextInt ( ) ; int [ ] left = new int [ n ] ; int [ ] right = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { left [ i ] = in . nextInt ( ) ; right [ i ] = in . nextInt ( ) ; } int L = 0 , R = 0 ; for ( int i = 0 ; i < n ; i ++ ) { L += left [ i ] ; R += right [ i ] ; } int min = Math . abs ( L - R ) ; int minIndex = - 1 ; for ( int i = 0 ; i < n ; i ++ ) { int Lnum = L - left [ i ] + right [ i ] ; int Rnum = R - right [ i ] + left [ i ] ; if ( Math . abs ( Lnum - Rnum ) > min ) { min = Math . abs ( Lnum - Rnum ) ; minIndex = i ; } } System . out . println ( minIndex + 1 ) ; }
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