#include<stdio.h>
#include<vector>
#define prim 123457
using namespace std;
vector<unsigned>hhash[123460];
vector<unsigned>frecv[123460];
unsigned v[1100000];
#define DIM 8192
char buff[DIM+16];
int pz;
inline void citeste(unsigned &x)
{
            x=0;
            while((buff[pz]<'0' || buff[pz]>'9') && (buff[pz]!='-'))
                        if(++pz==DIM)fread(buff, 1, DIM, stdin), pz=0;      
            while(buff[pz]>='0' && buff[pz]<='9')
            {
                        x=x*10+buff[pz]-'0';
                        if(++pz==DIM)fread(buff,1, DIM, stdin),pz=0;
            }
}
int existenta(unsigned citit)
{
	unsigned i,cheie=citit%prim,lungime=hhash[cheie].size();
	for(i=0;i<lungime;i++)
		if(citit==hhash[cheie][i]&&frecv[cheie][i]!=0)
		{
			frecv[cheie][i]++;
			return 1;
		}
	hhash[cheie].push_back(citit);
	frecv[cheie].push_back(1);
	return 0;
}
int stergere(unsigned citit)
{
	unsigned i,cheie=citit%prim,lungime=hhash[cheie].size();
	for(i=0;i<lungime;i++)
		if(citit==hhash[cheie][i]&&frecv[cheie][i]!=0)
		{
			frecv[cheie][i]--;
			if(frecv[cheie][i]==0)
			return 0;
			else
				return 1;
		}
}
int main()
{
	unsigned x,y,i,N,L,U,citit,indice_inceput=0,indice_sfarsit=0;
	unsigned contor_distincte=0;
	unsigned contor_U=0;
	unsigned contor_L=0;
	freopen("secv5.in","r",stdin);
	freopen("secv5.out","w",stdout);
	scanf("%lu%lu%lu",&N,&L,&U);
	for(i=0;i<N;i++)
	{
		citeste(v[i]);
		indice_sfarsit=i;
		if(contor_distincte<=U)
		{
			y=existenta(v[i]);
			if(y)
			{
				contor_U+=(indice_sfarsit-indice_inceput+1);
			}
			else
				{
					contor_distincte++;
					if(contor_distincte<=U)
					{
						contor_U+=(indice_sfarsit-indice_inceput+1);
					}
					else
						{
							while(contor_distincte>U)
							{
								x=stergere(v[indice_inceput]);
								if(x)
									indice_inceput++;
								else
									{
										contor_distincte--;
										indice_inceput++;
									}
							}
							contor_U+=(indice_sfarsit-indice_inceput+1);
						}
				}
		}
	}
	for(i=0;i<123458;i++)
	{
		hhash[i].clear();
		frecv[i].clear();
	}
	indice_inceput=0;
	contor_distincte=0;
	L--;
	for(i=0;i<N;i++)
	{
		indice_sfarsit=i;
		if(contor_distincte<=L)
		{
			y=existenta(v[i]);
			if(y)
			{
				contor_L+=(indice_sfarsit-indice_inceput+1);
			}
			else
				{
					contor_distincte++;
					if(contor_distincte<=L)
					{
						contor_L+=(indice_sfarsit-indice_inceput+1);
					}
					else
						{
							while(contor_distincte>L)
							{
								x=stergere(v[indice_inceput]);
								if(x)
									indice_inceput++;
								else
									{
										contor_distincte--;
										indice_inceput++;
									}
							}
							contor_L+=(indice_sfarsit-indice_inceput+1);
						}
				}
		}
	}
	printf("%lu",contor_U-contor_L);
	return 0;
}