public static void main ( String [ ] args ) {
  FastReader in = new FastReader ( ) ;
  int n = in . nextInt ( ) ;
  int arr [ ] = new int [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    arr [ i ] = in . nextInt ( ) ;
  }
  int brr [ ] = new int [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    brr [ i ] += arr [ i ] / n ;
    if ( i >= ( arr [ i ] % n ) ) {
      brr [ i ] += 1 ;
    }
    else {
      brr [ i ] += 2 ;
    }
  }
  int ans = brr [ 0 ] ;
  int ind = 0 ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) {
    if ( ans > brr [ i ] ) {
      ans = brr [ i ] ;
      ind = i ;
    }
  }
  ind ++ ;
  System . out . println ( ind ) ;
}

public static void main ( String [ ] args ) { FastReader in = new FastReader ( ) ; int n = in . nextInt ( ) ; int arr [ ] = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { arr [ i ] = in . nextInt ( ) ; } int brr [ ] = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { brr [ i ] += arr [ i ] / n ; if ( i >= ( arr [ i ] % n ) ) { brr [ i ] += 1 ; } else { brr [ i ] += 2 ; } } int ans = brr [ 0 ] ; int ind = 0 ; for ( int i = 1 ; i < n ; i ++ ) { if ( ans > brr [ i ] ) { ans = brr [ i ] ; ind = i ; } } ind ++ ; System . out . println ( ind ) ; }
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