title: Check If X Can Give Change To Every Person In The Queue
signature: fun checkIfXCanGiveChangeToEveryPersonInTheQueue(notes: 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(notes: ArrayList<Int>, n: Int, expected:Int):String {
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME(notes, n), expected)) {
                return "PASSED"
        }
        return "FAILED"
      } catch (e: Exception){
        return e::class.simpleName as String
      }
  
  }
  
  fun main() {
      var result: String = ""
      result = driver(arrayListOf(5, 5, 5, 10, 20), 4, 1)
      println("TEST-0...${result}")
      
      result = driver(arrayListOf(5, 5, 5, 20, 10), 5, 0)
      println("TEST-1...${result}")
      
      result = driver(arrayListOf(5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10), 27, 1)
      println("TEST-2...${result}")
      
      result = driver(arrayListOf(10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 18), 12, 0)
      println("TEST-3...${result}")
      
      result = driver(arrayListOf(5, 5, 20), 2, 1)
      println("TEST-4...${result}")
      
      result = driver(arrayListOf(10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5), 17, 0)
      println("TEST-5...${result}")
      
      result = driver(arrayListOf(5, 10, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5), 7, 0)
      println("TEST-6...${result}")
      
      result = driver(arrayListOf(-82, -10, -78, -84, 68, 62, 10, 20, -86, -98, 92, 70, 40, -12, -20, -36, 8, -70, 6, 8, 44, -24, 8, -18, 76, -54, -14, -94, -68, -62, -24, -36, -74, 92, 92, -80, 48, 56, 94), 31, 0)
      println("TEST-7...${result}")
      
      result = driver(arrayListOf(10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5), 25, 0)
      println("TEST-8...${result}")
      
      result = driver(arrayListOf(46, 46, 93, 57, 82, 34, 83, 80, 77, 36, 80, 85, 69, 28, 9, 56, 49, 27, 83, 25, 1, 80, 99, 14, 69, 82, 79, 71, 74, 34), 20, 0)
      println("TEST-9...${result}")
      
          
  }
  
  main()
source_py: def check_if_x_can_give_change_to_every_person_in_the_queue(notes, n):
      fiveCount = 0
      tenCount = 0
      for i in range(n):
          if (notes[i] == 5):
              fiveCount += 1
          elif (notes[i] == 10):
              if (fiveCount > 0):
                  fiveCount -= 1
                  tenCount += 1
              else:
                  return 0
          elif ((fiveCount > 0) and (tenCount > 0)):
              fiveCount -= 1
              tenCount -= 1
          elif (fiveCount >= 3):
              fiveCount -= 3
          else:
              return 0
      return 1
source_cpp: int check_if_x_can_give_change_to_every_person_in_the_queue(vector<int> notes, int n) {
    int fiveCount = 0;
    int tenCount = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( notes [ i ] == 5 ) fiveCount ++;
      else if ( notes [ i ] == 10 ) {
        if ( fiveCount > 0 ) {
          fiveCount --;
          tenCount ++;
        }
        else return 0;
      }
      else {
        if ( fiveCount > 0 && tenCount > 0 ) {
          fiveCount --;
          tenCount --;
        }
        else if ( fiveCount >= 3 ) {
          fiveCount -= 3;
        }
        else return 0;
      }
    }
    return 1;
  }