#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,m,l,s,i,g,sw,b,q;
	cin>>l>>m>>n;
	for(i=m;i<=n;i++){
		g=i%10;
		sw=i/10%10;
		b=i/100%10;
		q=i/1000;
		if(g==l||s==l||b==l||q==l) s++;
			i++;
	}
	cout<<s;
	return 0;
}
/**************************************************************
	Problem: 1445
	User: zhangziang
	Language: C++
	Result: Wrong Answer
****************************************************************/