#include<stdio.h>

void main(){
	int x,m,n,p=0,g,s,b,q,i;
	scanf("%d\n",&x);
	scanf("%d",&m);
	scanf("%d",&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){
			p++;
		} 
	}
	printf("%d",p); 
		
}
/**************************************************************
	Problem: 1445
	User: admin
	Language: C
	Result: Accepted
	Time:16 ms
	Memory:1144 kb
****************************************************************/