HDU： 2015 偶数求和

#include<stdio.h>

int main()

{

    int
m,n,x,a,i,num,flag,sum;

   
while(scanf("%d%d",&n,&m)!=EOF)

    {

       
flag=0;

       
x=n/m;

       
a=n%m;sum=num=0;

        
for(i=1;i<=x*m;i++)

        
{

            
num=num+2*i;

            
sum++;

            
if(sum%m==0)

            
{

               
if(flag)printf(" ");

                
printf("%d",num/sum);

                
flag=1;

                
sum=num=0;

            
}

        
}num=sum=0;

        
for(i=x*m+1;i<=n;i++)

        
{

            
num=num+2*i;

            
sum++;

        
}

        
if(x*m!=n)

        
printf(" %d\n",num/sum);

        
else printf("\n");

    }