#include<fstream>
#include<algorithm>
#include<cstring>
#include<vector>
using namespace std;
int n,L,U,nmax;
vector <pair <unsigned int,int> > A;
int v[1050000];

inline void Citire()
{
	int i,ns,poz;
	unsigned int aux;
	char s[20];
	ifstream fin("secv5.in");
	fin>>n>>L>>U;
	fin.getline(s,20);
	for(i=1;i<=n;i++)
	{
		fin.getline(s,20);
		ns=strlen(s);
		poz=0;
		aux=0;
		while(poz<ns)
			aux=aux*10+s[poz++]-'0';
		A.push_back(make_pair(aux,i));
	}
	fin.close();
}

inline void Normalizare()
{
	int i,norm=0;
	sort(A.begin(),A.end());
	v[A[0].second]=++norm;
	for(i=1;i<n;i++)
	{
		if(A[i].first==A[i-1].first)
			v[A[i].second]=norm;
		else
			v[A[i].second]=++norm;
	}
	nmax=norm;
}

inline long long Nr(int size)
{
	long long sol=0;
	int st=1,dr=1,now=0;
	vector <int> viz;
	viz.resize(nmax+1,0);
	while(dr<=n)
	{
		if(viz[v[dr]]==0)
			now++;
		viz[v[dr]]++;
		while(now>size)
		{
			viz[v[st]]--;
			if(viz[v[st]]==0)
				now--;
			st++;
		}
		sol+=(long long)(dr-st+1);
		dr++;
	}
	return sol;
}

inline void Afisare()
{
	long long sol=Nr(U)-Nr(L-1);
	ofstream fout("secv5.out");
	fout<<sol<<"\n";
	fout.close();
}

int main()
{
	Citire();
	Normalizare();
	Afisare();
	return 0;
}