Contest1337/g.c

#include <stdio.h>

int main()
{
    int a[10], i;

    while (~scanf("%d", a))
    {
        int over = 1;
        for (i = 1; i < 5; i++)
        {
            scanf("%d", a + i);
            if (a[i] != 0) over = 0;
        }
        if (over) break;
        int d = a[1] - a[0];
        int flag = 1;
        for (i = 1; i < 5; i++)
            if (a[i] != a[i - 1] + d)
                flag = 0;
        int n = a[4];
        for (i = 0; i < 5; i++)
        {
            if (flag) n = n + d;
            else n = n * (d = a[1] / a[0]);
            printf("%d ",n);
        }
        printf("\n");
    }
    return 0;
}