public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int [ ] a = new int [ n + 1 ] ;
  int box = 0 ;
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    a [ i ] = sc . nextInt ( ) ;
  }
  int x = sc . nextInt ( ) ;
  int y = sc . nextInt ( ) ;
  int beg = 0 , ent = 0 ;
  for ( int i = 2 ;
  i <= n ;
  i ++ ) {
    beg = 0 ;
    ent = 0 ;
    for ( int j = 1 ;
    j < i ;
    j ++ ) beg += a [ j ] ;
    for ( int k = i ;
    k <= n ;
    k ++ ) ent += a [ k ] ;
    if ( beg >= x && beg <= y && ent >= x && ent <= y ) box = i ;
  }
  System . out . println ( box ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int [ ] a = new int [ n + 1 ] ; int box = 0 ; for ( int i = 1 ; i <= n ; i ++ ) { a [ i ] = sc . nextInt ( ) ; } int x = sc . nextInt ( ) ; int y = sc . nextInt ( ) ; int beg = 0 , ent = 0 ; for ( int i = 2 ; i <= n ; i ++ ) { beg = 0 ; ent = 0 ; for ( int j = 1 ; j < i ; j ++ ) beg += a [ j ] ; for ( int k = i ; k <= n ; k ++ ) ent += a [ k ] ; if ( beg >= x && beg <= y && ent >= x && ent <= y ) box = i ; } System . out . println ( box ) ; }
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