#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,h=0,x,m,n,i,d;
	cin>>x>>m>>n;
	for(i=m;i<=n;i++){
		a=i%10;
		b=i/10%10;
		c=i/100%10;
		d=i/1000;
		if(a==x||b==x||c==x||d==x){
			h++;
		}
	}cout<<h;
	return 0;
}

/**************************************************************
	Problem: 1445
	User: 123
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/