#include <iostream>
using namespace std;

int main(){
	int x,g,s,b,q,i,c = 0,m,n;
	cin>>x;
	cin>>m>>n;
	for(i = m;i <= n;i++){
		g = i % 10;
		s = i / 10 % 10;
		b = i / 100 % 10;
		q = i / 1000;
		if(g == x || s == x || b == x || q == x){
			c++;
		}
	}
	cout<<c<<endl;
	
}


/**************************************************************
	Problem: 1445
	User: admin
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/