poj2583---Series Determination

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int x,y,z,a,b,c;
    while(scanf("%d %d %d",&x,&y,&z) !=EOF)
    {
        a=(z+x-2*y)/2;
        b=(4*y-3*x-z)/2;
        c=x;
        printf("%d %d %d\n",9*a+3*b+c,16*a+4*b+c,25*a+5*b+c);
    }
    return 0;
}