poj 2000 Gold Coins

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int main ()
{
int x,n,p;
while(cin>>n)
{
if (n==0)
break;
x=p=1;
int sum=0;
while(x<=n)
{
for(int i=x;i<x+p&&i<=n;i++)
sum+=p;
x=x+p;
p++;
}
cout<<n<<" "<<sum<<endl;
}
return 0;
}