> 
> #include<iostream>
> using namespace std;
>  #include<math.h>
> int main(){
>      int i,j,n,sum;  int sum1=0;int k=0;
> 	 int a[50],b[50];
> 	for(;;)
> 	{
> 	    cin>>n;
>  		if(n==0) break;
>  		sum=0;
>  		for(i=1;i<n;i++)
> 		{
>  		   sum=sum+i*i;
>  			if(n==(i*i+i)/2)
> 			sum1=sum;
> 
>  	  	   else if(n>(i*i-i)/2&&n<=(i*i+i)/2)
>  				sum1=sum-((i*i+i)/2-n)*i;
>  			
>  		}
> 	a[k]=n;
> 	b[k]=sum1;
> 	k++;
>  	}
> 	for(j=0;j<k;j++)
> 	{cout<<a[j]<<' '<<b[j]<<endl;}
> 
>  return 0;
> }
>  
>