public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int i = 0 ;
  long ar [ ] = new long [ n ] ;
  long max = 0 ;
  long s = 0 ;
  for ( i = 0 ;
  i < n ;
  i ++ ) {
    ar [ i ] = sc . nextLong ( ) ;
    s += ar [ i ] ;
    max = Math . max ( max , ar [ i ] ) ;
  }
  long ans = Math . max ( ( ( s - 1 ) / ( n - 1 ) ) + 1 , max ) ;
  System . out . println ( ans ) ;
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int i = 0 ; long ar [ ] = new long [ n ] ; long max = 0 ; long s = 0 ; for ( i = 0 ; i < n ; i ++ ) { ar [ i ] = sc . nextLong ( ) ; s += ar [ i ] ; max = Math . max ( max , ar [ i ] ) ; } long ans = Math . max ( ( ( s - 1 ) / ( n - 1 ) ) + 1 , max ) ; System . out . println ( ans ) ; }
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