> #include <stdio.h>
> #include <string.h>
> int occur[101][10];
> int main(){
> 	
> 	bool v[100];
> 	for(int i=2;i<101;++i){
> 		memset(v,0,sizeof(v));
> 		int t=1;
> 		while((t%=i)&&!v[t]){
> 			v[t]=1;
> 			t*=10;
> 			occur[i][t/i]++;
> 		}
> 	}
> 	int n,k,ret=0;
> 	while(scanf("%d%d",&n,&k)!=EOF){
> 		ret=0;
> 		for(int i=2;i<n;++i) ret+=occur[i][k]; // 把这句改成 i<=n 就对了
> 		printf("%d\n",ret);
> 	}
> 	return 0;
> }