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

/**************************************************************
	Problem: 1445
	User: tangkaixuan
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/