public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int [ ] arr = new int [ n ] ;
  int sum = 0 , sum1 = 0 ;
  if ( n >= 1 && n <= 100 ) {
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      int a = sc . nextInt ( ) ;
      if ( a >= 1 && a <= 100 ) arr [ i ] = a ;
    }
    int max = 0 ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      if ( max <= arr [ i ] ) max = arr [ i ] ;
      sum += arr [ i ] ;
    }
    int x = max ;
    while ( true ) {
      sum1 = 0 ;
      for ( int j = 0 ;
      j < n ;
      j ++ ) {
        sum1 += ( x - arr [ j ] ) ;
      }
      if ( sum1 > sum ) {
        System . out . println ( x ) ;
        break ;
      }
      else x ++ ;
    }
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int [ ] arr = new int [ n ] ; int sum = 0 , sum1 = 0 ; if ( n >= 1 && n <= 100 ) { for ( int i = 0 ; i < n ; i ++ ) { int a = sc . nextInt ( ) ; if ( a >= 1 && a <= 100 ) arr [ i ] = a ; } int max = 0 ; for ( int i = 0 ; i < n ; i ++ ) { if ( max <= arr [ i ] ) max = arr [ i ] ; sum += arr [ i ] ; } int x = max ; while ( true ) { sum1 = 0 ; for ( int j = 0 ; j < n ; j ++ ) { sum1 += ( x - arr [ j ] ) ; } if ( sum1 > sum ) { System . out . println ( x ) ; break ; } else x ++ ; } } }
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