杭电acm2015偶数求和

#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int main()
{
	int n,m,sum,k;
	while(cin>>n>>m)
	{
		sum=0;
		if(n%m==0)
		{
			for(int i=1;i<=n;i++)
			{
			//	cout<<"i="<<i;
				sum+=i*2;
				//cout<<" sum="<<sum<<endl;
				if(i%m==0)
				{
					cout<<sum/m;
					sum=0;
					if(i!=n)cout<<" ";
				    else cout<<endl;
				}
			}
		}else
		{
			k=n%m;
			for(int i=1;i<=n;i++)
			{
				sum+=i*2;
				if(i%m==0)
				{
					cout<<sum/m<<" ";
					sum=0;
				}else
				{
					if(i==n)
					cout<<sum/k<<endl;
				}
			}
		}
	}
	return 0;
}