title: Integer Positive Value Positive Negative Value Array
signature: class Solution {
  
      public int IntegerPositiveValuePositiveNegativeValueArray(List<int> arr, int n) {
test_code: using System;
  using System.Numerics;
  using System.Diagnostics;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Security.Cryptography;
  using System.Web.UI;
  using System.Web.Script.Serialization;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  namespace EvaluatePrediction {
      class TestRunner {
          public bool ValidateSolution(int actual, int expected){
              return new JavaScriptSerializer().Serialize(actual) == new JavaScriptSerializer().Serialize(expected);
          }
  
          public string driver(List<int> arr, int n, int expected){
              try{
                PLACEHOLDER_CLS_NAME solution_cls = new PLACEHOLDER_CLS_NAME();
                int pred_result = solution_cls.PLACEHOLDER_FN_NAME(arr, n); 
                if (ValidateSolution(
                      pred_result,
                      expected)){
                  return "PASSED";
                }
                return "FAILED";
              } 
              catch (Exception exception_obj)
              {
                return exception_obj.GetType().FullName;
              }
          }
          static void Main(string[] args) {
              TestRunner runner = new TestRunner();
              String result;
              result = runner.driver(
                  new List<int>{1, 7, 10, 14, 15, 24, 27, 32, 33, 38, 39, 40, 42, 42, 47, 58, 75, 76, 78, 79, 83, 85, 89, 96}, 18, 
                  1
              );
              Console.WriteLine(string.Format(
                  "TEST-0...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-36, 14, -76, -70, 52, 18, 64}, 5, 
                  14
              );
              Console.WriteLine(string.Format(
                  "TEST-1...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 17, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-2...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{35, 50, 36, 50, 82, 54, 10, 45, 13, 22, 1, 41, 13, 11, 4, 43, 50, 27, 94, 57}, 15, 
                  35
              );
              Console.WriteLine(string.Format(
                  "TEST-3...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-88, -86, -84, -80, -80, -74, -72, -48, -46, -46, -44, -34, -32, -24, -22, -14, 4, 4, 8, 8, 10, 12, 20, 20, 24, 24, 24, 28, 32, 34, 36, 44, 46, 54, 54, 60, 62, 62, 62, 70, 70, 80, 88, 88, 90}, 27, 
                  4
              );
              Console.WriteLine(string.Format(
                  "TEST-4...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0}, 1, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-5...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{1, 1, 3, 6, 6, 8, 12, 13, 17, 27, 28, 31, 40, 40, 42, 43, 53, 55, 58, 60, 60, 61, 65, 66, 72, 72, 75, 80, 84, 89, 96, 97, 99}, 31, 
                  1
              );
              Console.WriteLine(string.Format(
                  "TEST-6...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{52, -38, -82, 30, -66, 42, 54, -96, -46, -30, 18, -50, 96, 90, 4, 74, -22, 8, 34, 74, -46, 8, -32, 88, -96, 26, -80, 50, 92, -80, 44, 36}, 24, 
                  52
              );
              Console.WriteLine(string.Format(
                  "TEST-7...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{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}, 16, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-8...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{38, 20, 54, 51, 11, 61, 90, 28, 23, 55, 65, 87, 99, 70, 74, 3, 68, 23, 74, 53, 80, 7, 57, 24, 66, 8, 15, 63, 18, 67, 96, 31, 63, 50}, 30, 
                  38
              );
              Console.WriteLine(string.Format(
                  "TEST-9...{0}",
                  result)
              );
          }
      }
  }
  
source_py: def integer_positive_value_positive_negative_value_array(arr, n):
      hash = dict()
      maximum = 0
      for i in arr:
          if (i < 0):
              if (abs(i) not in hash.keys()):
                  hash[abs(i)] = (- 1)
              else:
                  hash[abs(i)] -= 1
          else:
              hash[i] = (hash.get(i, 0) + 1)
      for i in arr:
          if ((i in hash.keys()) and (hash[i] > 0)):
              return i
      return (- 1)
source_cpp: int integer_positive_value_positive_negative_value_array(vector<int> arr, int n) {
    unordered_map < int, int > hash;
    int maximum = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( arr [ i ] < 0 ) hash [ abs ( arr [ i ] ) ] -= 1;
      else hash [ arr [ i ] ] += 1;
    }
    for ( int i = 0;
    i < n;
    i ++ ) if ( hash [ arr [ i ] ] != 0 ) return arr [ i ];
    return - 1;
  }