AC代码
```cpp
#include<bits/stdc++.h>
using namespace std;
int main(){
int n,k;
cin>>n>>k;
cout<<n+(n-1)/(k-1);
return 0;
}
``````
#### ~~求关~~
by 2023hkm @ 2024-02-24 11:13:54
@[2023hkm](/user/1240717) yiihuiguan已回关~
by yyz0526 @ 2024-02-25 13:17:50