#include <bits/stdc++.h>
#include <atcoder/all>
#include <boost/polygon/point_data.hpp>
#include <boost/polygon/voronoi.hpp>
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define all(x) begin(x),end(x)
#define sz(x) (int)(x).size()
using namespace std;
using namespace atcoder;
using ll=long long;
using ld=long double;
using vll=vector<ll>;
using vvll=vector<vll>;
using vi=vector<int>;
using vvi=vector<vi>;
using pll=pair<ll,ll>;
using pi=pair<int,int>;

// using mint=modint998244353;

// using BoostPoint=boost::polygon::point_data<int>;
// using Voronoi=boost::polygon::voronoi_diagram<double>;

int main()
{
  	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	ll N,M,T;
	cin>>N>>M>>T;
	vll cnt(N);
	rep(i,0,M){
		ll a;
		cin>>a;
		cnt[a-1]++;
	}
	multiset<ll>s(all(cnt));
	while(1){
		ll mn=*s.begin(),mx=*s.rbegin();
		if(mx-mn<=T)break;
		s.erase(s.begin());
		s.erase(prev(s.end()));
		s.insert(mn+T);
		s.insert(mx-1);
	}
	cout<<*s.rbegin()<<'\n';
}