#include<stdio.h>
#include<math.h>
int main()
{
int n,i,k;
double s;
while(scanf("%d",&n),n)
s=1.0*(n+1)*n/6.0*(n+2);
k=0;
while(s>=10)
s=s/10;
k++;
}
printf("%.2lfE%d\n",s,k);
return 0;