title: Maximum Area Rectangle Picking Four Sides Array 1
signature: fun maximumAreaRectanglePickingFourSidesArray1(arr: ArrayList<Int>, n: Int): Int {
test_code: package main
  
  import kotlin.text.*
  import kotlin.math.*
  
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  fun validateSolution(actual:Int, expected:Int):Boolean{
    return actual.equals(expected)
  }
  fun driver(arr: ArrayList<Int>, n: Int, expected:Int):String {
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME(arr, n), expected)) {
                return "PASSED"
        }
        return "FAILED"
      } catch (e: Exception){
        return e::class.simpleName as String
      }
  
  }
  
  fun main() {
      var result: String = ""
      result = driver(arrayListOf(4, 6, 7, 8, 12, 13, 14, 15, 18, 18, 19, 19, 26, 26, 32, 32, 33, 34, 34, 36, 41, 43, 47, 47, 51, 51, 52, 53, 55, 56, 57, 60, 61, 71, 74, 75, 76, 77, 79, 87, 87, 87, 90, 95, 98, 99), 37, 2397)
      println("TEST-0...${result}")
      
      result = driver(arrayListOf(-64, -72, 6, -62, 54, 14, 28, 60, -96, 14, -32, -2, 80, 8, -56, 68, 86, 64, 86, -12, 82), 12, 0)
      println("TEST-1...${result}")
      
      result = driver(arrayListOf(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 27, 1)
      println("TEST-2...${result}")
      
      result = driver(arrayListOf(99, 7, 14, 50, 94, 24, 79, 13, 19, 29, 22, 2, 77, 36, 38, 18, 51, 15, 99, 52, 17, 77, 22, 54), 15, 0)
      println("TEST-3...${result}")
      
      result = driver(arrayListOf(-96, -92, -86, -84, -84, -80, -70, -70, -68, -64, -64, -48, -46, -24, -22, -20, -8, -8, 0, 0, 4, 8, 8, 22, 28, 36, 46, 50, 52, 54, 60, 62, 66, 70, 80, 84, 86, 94, 96, 96), 25, 0)
      println("TEST-4...${result}")
      
      result = driver(arrayListOf(1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1), 12, 1)
      println("TEST-5...${result}")
      
      result = driver(arrayListOf(98), 0, 0)
      println("TEST-6...${result}")
      
      result = driver(arrayListOf(-88, -24, 8, 20, -46, 60, 24, 26, 98, 82, -30, 16, 22, -28, 84, 12, 34, 14, -18, -38, -94, -24, 6, 4, -52, -48, 84), 21, 0)
      println("TEST-7...${result}")
      
      result = driver(arrayListOf(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 21, 0)
      println("TEST-8...${result}")
      
      result = driver(arrayListOf(6, 30, 47, 97, 20, 16, 68, 34, 1, 77, 48, 8, 22, 68), 8, 0)
      println("TEST-9...${result}")
      
          
  }
  
  main()
source_py: def maximum_area_rectangle_picking_four_sides_array_1(arr, n):
      s = []
      first = 0
      second = 0
      for i in range(n):
          if (arr[i] not in s):
              s.append(arr[i])
              continue
          if (arr[i] > first):
              second = first
              first = arr[i]
          elif (arr[i] > second):
              second = arr[i]
      return (first * second)
source_cpp: int maximum_area_rectangle_picking_four_sides_array_1(vector<int> arr, int n) {
    unordered_set < int > s;
    int first = 0, second = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( s . find ( arr [ i ] ) == s . end ( ) ) {
        s . insert ( arr [ i ] );
        continue;
      }
      if ( arr [ i ] > first ) {
        second = first;
        first = arr [ i ];
      }
      else if ( arr [ i ] > second ) second = arr [ i ];
    }
    return ( first * second );
  }