for(int i = 0; i < 10; i++)
    {
        std::cin>>b>>c;
        if(b > 0 && c > 0)
        {
            f[i] = b%c;
        }
        else
        {
            if ((b*-1)%c == 0)
            {
                f[i] = 0;
                continue;
            }
            m = b/c;
            if(m < 0)
                m *= -1;
            if(b < 0)
                m++;
            g = m*c;
            if(c < 0 && b < 0)
            {
                if (c == b)
                {
                    f[i] = 0;
                    continue;
                }
                n = b - g;
                f[i] = n;
                continue;
            }
            n = b + g;
            f[i] = n;
        }
    }