SOLUTION OF URI 1159

//  1159   (Mahmud_Jamil) BRUR
// 

Sum of Consecutive Even Numbers

#include <stdio.h>
int main()
{
    int x,a,b=0;
    while(1)
    {
        scanf("%d", &x);
        b=0;
        if(x==0)
            break;
        else if(x%2==0)
        {
            for(a=x; a<=x+8; a+=2) b+=a;
        }
        else
        {
            for(a=x+1;a<=x+9;a+=2) b+=a;
        }
        printf("%d\n", b);
    }
    return 0;
}