```cpp
#include<iostream>
using namespace std;
int main()
{
int n,k,s;
cin>>n>>k;
s=n;
while(n>=k)
{
n=n-k;
n=n+1;
s=s+1;
}
cout<<s<<endl;
return 0;
}
```
by 市场花园行动 @ 2017-10-06 21:44:48
额，是c++的，不好意思....
by 市场花园行动 @ 2017-10-06 21:45:18
```cpp
var
n,k,sum:longint;
begin
read(n,k);
sum:=n;
while sum=sum do
begin
n:=n-k+1;
inc(sum);
if n<k then break;
end;
write(sum);
end.
```
by ljxljxljx @ 2017-10-08 20:26:13
用减法，慢慢来。
by ljxljxljx @ 2017-10-08 20:26:55
@[lcf3241142097](/space/show?uid=37601) 小心边缘数据
这个是w#3的代码
```cpp
#include<cstdio>
using namespace std;
int main()
{
int n,k,count,countt;
scanf("%d%d",&n,&k);
count=n;
countt=n;
while(countt>k)
{
countt-=k;
countt++;
count++;
}
printf("%d",count);
return 0;
}
countt>k改成countt>=k就A了
```
by bh1234666 @ 2017-11-24 20:15:45