pku 2509

pku 2509

 1 #include < iostream >
 2 using   namespace  std;
 3 int  main()
 4 {  int n,k,s,sum,h;
 5    while(cin>>n>>k)
 6    {    h=n;
 7    sum=0;
 8                    while(n>=k)
 9                    {
10                               s=n/k;
11                               sum+=s;
12                               n=s+n%k;
13                               }
14                               cout<<sum+h<<endl;
15                    }
16    return 0;
17    }
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