title: Maximum Area Rectangle Picking Four Sides Array 1
signature: function maximumAreaRectanglePickingFourSidesArray1(arr, n) {
test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value) {
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual, expected){
      return convertToString(actual)===convertToString(expected);
  }
  
  function driver(arr, n, expected){
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver([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);
    console.log(`TEST-0...${result}`);
  
    result = driver([-64, -72, 6, -62, 54, 14, 28, 60, -96, 14, -32, -2, 80, 8, -56, 68, 86, 64, 86, -12, 82], 12, 0);
    console.log(`TEST-1...${result}`);
  
    result = driver([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);
    console.log(`TEST-2...${result}`);
  
    result = driver([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);
    console.log(`TEST-3...${result}`);
  
    result = driver([-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);
    console.log(`TEST-4...${result}`);
  
    result = driver([1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1], 12, 1);
    console.log(`TEST-5...${result}`);
  
    result = driver([98], 0, 0);
    console.log(`TEST-6...${result}`);
  
    result = driver([-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);
    console.log(`TEST-7...${result}`);
  
    result = driver([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);
    console.log(`TEST-8...${result}`);
  
    result = driver([6, 30, 47, 97, 20, 16, 68, 34, 1, 77, 48, 8, 22, 68], 8, 0);
    console.log(`TEST-9...${result}`);
  
    process.exit(0);
  };
  
  if (require.main === module) {
    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 );
  }