/*
#include<stdio.h>
int main()
{
int t,x,m,c,w,sum=0;
double a;
char h;
scanf("%c\n",&h);
scanf("%d\n",&t);
scanf("%d\n",&x);
scanf("%d %d\n",&m,&c);
scanf("%d",&w);
if(h=='A')
{
sum=10;
}
else if(h=='S')
{
sum=2;
}
else if(h=='O')
{
sum=1;
}
a=(double)x*sum/w+(double)t;
if(a*c<=m)
{
printf("Yes");
}
else
{
printf("No");
}
return 0;
}
*/
#include<stdio.h>
int main()
{
int a,n,c,i,j,sum=0,jump=0,idol=0;
int d[3002]={};
scanf("%d",&a);
for(i=1;i<=a;i++)
{
scanf("%d",&d[i]);
}
scanf("%d %d",&n,&c);
for(i=n;i<=c;i++)
{
sum+=d[i];
}
for(i=1;i<=a;i++)
{
for(j=i;j<=a;j++)
{
jump+=d[j];
if(jump==sum)
{
idol+=1;
jump=0;
break;
}
if(j==a)
{
jump=0;
}
}
}
printf("%d",idol);
return 0;
}