title: Maximum Number Chocolates Distributed Equally Among K Students
signature: class Solution {
  
      public int MaximumNumberChocolatesDistributedEquallyAmongKStudents(List<int> arr, int n, int k) {
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 k, int expected){
              try{
                PLACEHOLDER_CLS_NAME solution_cls = new PLACEHOLDER_CLS_NAME();
                int pred_result = solution_cls.PLACEHOLDER_FN_NAME(arr, n, k); 
                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>{2, 3, 8, 8, 12, 14, 23, 25, 25, 27, 27, 29, 40, 42, 49, 52, 52, 54, 56, 57, 61, 68, 74, 77, 81, 82, 83, 84, 85, 85, 85, 87, 87, 88, 88, 90, 92, 96, 96}, 27, 32, 
                  29
              );
              Console.WriteLine(string.Format(
                  "TEST-0...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-90, -34, 26, -20, -12, -42, 28, 12, -6, 58, -46, 4, -30, -28, -14}, 8, 14, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-1...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 7, 9, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-2...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{58, 81, 36, 2, 51, 71, 77, 34, 91, 82, 47, 4, 91, 83, 26, 96, 3, 6}, 16, 12, 
                  48
              );
              Console.WriteLine(string.Format(
                  "TEST-3...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-92, -86, -82, -68, -60, -46, -40, -28, -26, -24, -2, -2, 2, 2, 10, 10, 10, 16, 16, 18, 20, 20, 22, 30, 34, 38, 56, 56, 60, 62, 62, 68, 82, 94, 94, 98}, 20, 31, 
                  2
              );
              Console.WriteLine(string.Format(
                  "TEST-4...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 1, 0}, 2, 2, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-5...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{3, 8, 15, 19, 21, 26, 28, 31, 31, 42, 45, 48, 57, 75, 75, 78, 79, 85, 91, 99}, 17, 16, 
                  36
              );
              Console.WriteLine(string.Format(
                  "TEST-6...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-38, 42, 40, -60, -16, -36, 44, 60, -86, -38, 30, -22, -30, -96, -66}, 12, 10, 
                  6
              );
              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, 1, 1, 1, 1, 1, 1, 1, 1}, 13, 16, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-8...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{95, 38, 91, 75, 43, 95, 23, 36, 51, 4, 38, 53, 52, 58, 55, 3, 19, 22, 84, 9}, 14, 19, 
                  31
              );
              Console.WriteLine(string.Format(
                  "TEST-9...{0}",
                  result)
              );
          }
      }
  }
  
source_py: def maximum_number_chocolates_distributed_equally_among_k_students(arr, n, k):
      (um, curr_rem, maxSum) = ({
          
      }, 0, 0)
      sm = ([0] * n)
      sm[0] = arr[0]
      for i in range(1, n):
          sm[i] = (sm[(i - 1)] + arr[i])
      for i in range(n):
          curr_rem = (sm[i] % k)
          if ((not curr_rem) and (maxSum < sm[i])):
              maxSum = sm[i]
          elif (not (curr_rem in um)):
              um[curr_rem] = i
          elif (maxSum < (sm[i] - sm[um[curr_rem]])):
              maxSum = (sm[i] - sm[um[curr_rem]])
      return (maxSum // k)
source_cpp: int maximum_number_chocolates_distributed_equally_among_k_students(vector<int> arr, int n, int k) {
    unordered_map < int, int > um;
    int sum [ n ], curr_rem;
    int maxSum = 0;
    sum [ 0 ] = arr [ 0 ];
    for ( int i = 1;
    i < n;
    i ++ ) sum [ i ] = sum [ i - 1 ] + arr [ i ];
    for ( int i = 0;
    i < n;
    i ++ ) {
      curr_rem = sum [ i ] % k;
      if ( curr_rem == 0 ) {
        if ( maxSum < sum [ i ] ) maxSum = sum [ i ];
      }
      else if ( um . find ( curr_rem ) == um . end ( ) ) um [ curr_rem ] = i;
      else if ( maxSum < ( sum [ i ] - sum [ um [ curr_rem ] ] ) ) maxSum = sum [ i ] - sum [ um [ curr_rem ] ];
    }
    return ( maxSum / k );
  }