title: Maximum Removal From Array When Removal Time Waiting Time
signature: pub fn maximum_removal_from_array_when_removal_time_waiting_time(arr: Vec<i32>, n: i32) -> i32 {
test_code: use std::collections::HashMap;
  use std::collections::HashSet;
  use std::cmp::*;
  use std::collections::*;
  use std::fmt::*; 
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  pub fn validate_solution(actual: i32, expected: i32)->bool{
  return actual==expected
  }
  pub fn driver(arr: Vec<i32>, n: i32, expected: i32)->String{
      if validate_solution(PLACEHOLDER_FN_NAME(arr, n), expected) {
        return "PASSED".to_string();
      };
      return "FAILED".to_string();
  
  }
  
  fn main() {
      println!("TEST-0...{}", driver(
        Vec::from([7, 33, 34, 42, 42, 45, 73]), 5, 
        3
      ));
      
      println!("TEST-1...{}", driver(
        Vec::from([-98, -90, -80, -66, -64, -62, -48, -30, -20, -10, 4, 6, 12, 14, 32, 42, 44, 44, 52, 64, 86, 92, 94]), 16, 
        4
      ));
      
      println!("TEST-2...{}", driver(
        Vec::from([0, 0, 0, 0, 1]), 2, 
        2
      ));
      
      println!("TEST-3...{}", driver(
        Vec::from([11, 44, 71, 82, 85, 89]), 3, 
        3
      ));
      
      println!("TEST-4...{}", driver(
        Vec::from([-96, -92, -78, -72, -68, -58, -52, -50, -50, -48, -42, -32, -20, -18, -4, 0, 0, 2, 18, 18, 20, 24, 32, 34, 36, 38, 38, 60, 66, 68, 70, 72, 72, 74, 76, 96, 98]), 21, 
        5
      ));
      
      println!("TEST-5...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]), 16, 
        11
      ));
      
      println!("TEST-6...{}", driver(
        Vec::from([8, 9, 10, 11, 12, 15, 17, 19, 20, 21, 24, 30, 33, 35, 36, 39, 41, 41, 42, 54, 62, 63, 68, 70, 71, 72, 77, 85, 86, 86, 94, 95, 97, 97]), 31, 
        5
      ));
      
      println!("TEST-7...{}", driver(
        Vec::from([-94, -90, -72, -70, -66, -60, -24, -16, 4, 4, 10, 22, 28, 36, 46, 60, 70, 72, 76, 92, 96]), 20, 
        6
      ));
      
      println!("TEST-8...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]), 13, 
        13
      ));
      
      println!("TEST-9...{}", driver(
        Vec::from([7, 10, 12, 16, 20, 28, 31, 40, 42, 47, 53, 57, 59, 63, 63, 67, 69, 84, 90, 97]), 10, 
        4
      ));
      
  }
source_py: def maximum_removal_from_array_when_removal_time_waiting_time(arr, n):
      count = 0
      cummulative_sum = 0
      arr.sort()
      for i in range(n):
          if (arr[i] >= cummulative_sum):
              count += 1
              cummulative_sum += arr[i]
      return count
source_cpp: int maximum_removal_from_array_when_removal_time_waiting_time(vector<int> arr, int n) {
    int count = 0;
    int cummulative_sum = 0;
    sort(arr.begin(), arr.end());
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( arr [ i ] >= cummulative_sum ) {
        count ++;
        cummulative_sum += arr [ i ];
      }
    }
    return count;
  }