@[wzy20110830](/user/1113551)
```cpp
#include <bits/stdc++.h>//万能库
using namespace std;
int a,b,j=0;
int main()
{
cin>>a>>b;
for(int i=1;i<=a;i++)
{
int d=i;
while(d>0)
{
int c=d%10;
d=d/10;
if(c==b){
j++;
}
}
}
cout<<j;
return 0;
}
```
by xiangzhenze611 @ 2024-02-25 19:05:02
@[xiangzhenze611](/user/1005749)
谢谢大佬
~~好一个酣畅淋漓的优化~~
by wzy20110830 @ 2024-02-25 21:01:06