using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("2 6 2");
            WillReturn.Add("1 1 1 1 1 2");
            //4
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("1 10 100");
            WillReturn.Add("1 1 1 1 1 1 1 1 1 1");
            //10
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static long[] GetSplitArr(string pStr)
    {
        return (pStr == "" ? new string[0] : pStr.Split(' ')).Select(pX => long.Parse(pX)).ToArray();
    }

    static long mOvenCnt;
    static long mNeedTime;

    static long[] mAArr;

    static Dictionary<long, long> mCntDict = new Dictionary<long, long>();

    static void Main()
    {
        List<string> InputList = GetInputList();
        long[] wkArr = GetSplitArr(InputList[0]);
        mOvenCnt = wkArr[0];
        mNeedTime = wkArr[2];

        mAArr = GetSplitArr(InputList[1]);

        foreach (long EachA in mAArr) {
            if (mCntDict.ContainsKey(EachA) == false) {
                mCntDict[EachA] = 0;
            }
            mCntDict[EachA]++;
        }

        long L = 0;
        long R = long.MaxValue;

        while (L + 1 < R) {
            long Mid = R / 2;
            if (R < long.MaxValue) {
                Mid = (L + R) / 2;
            }

            if (CanAchieve(Mid)) {
                R = Mid;
            }
            else {
                L = Mid;
            }
        }
        Console.WriteLine(R);
    }

    // X分で可能かを返す
    static bool CanAchieve(long pX)
    {

        long HouwaCnt = 0;
        long YohuuCnt = 0;
        foreach (var EachPair in mCntDict) {
            if (EachPair.Value > pX) {
                HouwaCnt += EachPair.Value - pX;
            }
            if (EachPair.Value < pX) {
                long Buffer = pX - EachPair.Value;
                YohuuCnt += Buffer / mNeedTime;
            }            
        }

        if (HouwaCnt == 0) return true;

        return HouwaCnt <= YohuuCnt;
    }

}