hdu 1408 盐水的故事

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;


int main()
{
    double n,m;
    int ans,k;
    while(cin>>n>>m)
    {
        ans=0;k=1;
        while(n>0)
        {
           for(int i=1;i<=k;i++)
           {
               n=n-m;
               ans++;
               if(n<=0)
               break;
           }
           k++;
           if(n>0)
           ans++;
        }
        cout<<ans<<endl;
    }
    return 0;
}