#include <stdio.h>
#include <math.h>

int main ()
{
    FILE *fp, *fo;
    fo = fopen("input.txt","r");
    fp = fopen("output.txt","w");
    double a, b, c, D, x1, x2;
    fscanf(fo, "%lf %lf %lf", &a, &b, &c);
    D = (pow(b, 2) - 4*a*c);
    if (a != 0)
    {
        if (D < 0)
        {
            fprintf(fp, "NO");
        }
        else
        {
            if (D == 0)
            {
                fprintf(fp, "%lg", -b / (2*a));
            }
            else
            {
                x1 = (-b - sqrt(D))/(2 * a);
                x2 = (-b + sqrt(D))/(2 * a);
                if (x1 > x2)
                {
                    fprintf(fp, "%lg %lg", x2, x1);
                }
                else
                {
                    fprintf(fp, "%lg %lg", x1, x2);
                }
            }
        }
    }
    else
    {
        if (b == 0)
        {
            if (c == 0)
            {
                fprintf(fp, "R");
            }
            else
            {
                fprintf(fp, "NO");
            }
        }
        else
        {
            fprintf(fp, "%lg", -c / b);
        }
    }
    return 0;
}