title: Array Range Queries Elements Frequency Value
signature: arrayRangeQueriesElementsFrequencyValue :: Integer -> Integer -> [Integer] -> Integer
  arrayRangeQueriesElementsFrequencyValue start end_arg1 arr = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: Integer -> Integer -> [Integer] -> Integer -> String
  driver start end_arg1 arr expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME start end_arg1 arr) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver (0) (31) ([1, 2, 2, 3, 3, 3, 12, 13, 18, 18, 26, 28, 29, 36, 37, 39, 40, 49, 55, 57, 63, 69, 69, 73, 85, 86, 87, 87, 89, 89, 90, 91, 92, 93, 93, 93, 95, 99]) (3) )
  
      printf "TEST-1...%s\n" (driver (1) (25) ([24, -62, 2, 1, 94, 56, -22, -70, -22, -34, -92, -18, 56, 2, 60, 38, -88, 16, -28, 30, -30, 58, -80, 94, 6, 56]) (2) )
  
      printf "TEST-2...%s\n" (driver (3) (4) ([0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]) (1) )
  
      printf "TEST-3...%s\n" (driver (10) (15) ([84, 13, 81, 40, 87, 82, 50, 30, 90, 80, 81, 70, 14, 54, 72, 93, 78, 27, 61]) (0) )
  
      printf "TEST-4...%s\n" (driver (2) (3) ([-20, 20, 34, 60, 90]) (0) )
  
      printf "TEST-5...%s\n" (driver (0) (6) ([1, 0, 0, 0, 0, 0, 0, 0, 0, 0]) (1) )
  
      printf "TEST-6...%s\n" (driver (14) (18) ([11, 18, 18, 19, 25, 30, 42, 42, 56, 58, 63, 66, 67, 68, 69, 75, 78, 83, 83]) (0) )
  
      printf "TEST-7...%s\n" (driver (29) (33) ([-24, -82, 24, -84, 94, 2, -30, 86, 58, -56, -96, 60, -38, 76, 94, 74, -98, -84, -38, 46, 4, -84, -90, -28, -50, 46, 16, 28, -14, -82, -64, 42, 64, -2, -40, 96, 60, 2, -86, 32, 38, -66]) (0) )
  
      printf "TEST-8...%s\n" (driver (31) (19) ([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, 1, 1]) (0) )
  
      printf "TEST-9...%s\n" (driver (21) (32) ([2, 91, 42, 85, 97, 92, 24, 39, 63, 89, 31, 59, 51, 89, 72, 62, 26, 92, 75, 4, 6, 13, 20, 95, 22, 30, 52, 60, 37, 27, 49, 15, 67, 26]) (0) )
  
source_py: def array_range_queries_elements_frequency_value(start, end, arr):
      frequency = dict()
      for i in range(start, (end + 1)):
          if (arr[i] in frequency.keys()):
              frequency[arr[i]] += 1
          else:
              frequency[arr[i]] = 1
      count = 0
      for x in frequency:
          if (x == frequency[x]):
              count += 1
      return count
source_cpp: int array_range_queries_elements_frequency_value(int start, int end, vector<int> arr) {
    unordered_map < int, int > frequency;
    for ( int i = start;
    i <= end;
    i ++ ) frequency [ arr [ i ] ] ++;
    int count = 0;
    for ( auto x : frequency ) if ( x . first == x . second ) count ++;
    return count;
  }