4. 数字统计1

#include<stdio.h>
int i;
int main(){
	int a,b;
	int ans = 0;
	scanf("%d%d", &a,&b);
	for(i = 1;i<=a;i++)
	{
		int n = i;
		int tmp = 0;
		while(n)
		{
			tmp = n%10;
			n = n/10;
			if(tmp == b)
			{
				ans++;	
			}
		}
	}
	printf("%d", ans);
	return 0;
}