#include<stdio.h>
int main()
{
int a,i,count=0,sum=0;

while(1)
{
    scanf("%d",&a);

    if(a==0)
        {break;}

    else
        {
            if(a%2==0){
            for(i=a;count<=5;i+=2)
            {
                sum = sum+i;
                count++;
            }
            printf("%d\n",sum);
            }

            else{
            for(i=(a+1);count<=5;i+=2)
            {
                sum = sum+i;
                count++;
            }
            printf("%d\n",sum);
            }
        }
}
return 0;
}