希更展？使[Md](https://www.luogu.org/wiki/show?name=%E5%B8%AE%E5%8A%A9%EF%BC%9Amarkdown)
by ferrum_cccp @ 2019-04-23 23:28:12
```
#include <iostream>
using namespace std;
int main() {
long long n, x, di, count = 0;
cin >> n >> x;
for (int i = 1; i <= n; i++) {
di = i;
while (di) {
if (di % 10 == x) {
count++;
}
di /= 10;
}
}
cout << count << endl;
return 0;
}
```
就是这样，就不会TLE了^_^
by hantingsheng @ 2019-05-22 10:35:22