#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;
}
/**************************************************************
	Problem: 1445
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/