public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int k2 = sc . nextInt ( ) ;
  int k3 = sc . nextInt ( ) ;
  int k5 = sc . nextInt ( ) ;
  int k6 = sc . nextInt ( ) ;
  int ans = 0 ;
  int temp = Math . min ( k2 , Math . min ( k5 , k6 ) ) ;
  k2 -= temp ;
  k5 -= temp ;
  k6 -= temp ;
  ans += temp * 256 ;
  temp = Math . min ( k3 , k2 ) ;
  ans += temp * 32 ;
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int k2 = sc . nextInt ( ) ; int k3 = sc . nextInt ( ) ; int k5 = sc . nextInt ( ) ; int k6 = sc . nextInt ( ) ; int ans = 0 ; int temp = Math . min ( k2 , Math . min ( k5 , k6 ) ) ; k2 -= temp ; k5 -= temp ; k6 -= temp ; ans += temp * 256 ; temp = Math . min ( k3 , k2 ) ; ans += temp * 32 ; System . out . println ( ans ) ; }
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