#include <stdio.h>
#include <math.h>
#define CRT_SECURE_NO_WARNINGS
void main()
{
	float A, B, C, D, Root, X1, X2;

	scanf_s("%f%f%f", &A, &B, &C);

	D = (B*B) - (4 * A * C);
	Root = sqrt(D);
	X1 = ((-B) + Root) / (2*A);
	X2 = ((-B) - Root) / (2*A);
	Root2 = sqrt((-C / A));
		//(sqrt((B * B) - (4 * A*C))) / (2 * A);

	printf(" %.1f %.1f %.1f %.1f %.1f %.1f %.1f\n", A, B, C, D, Root, X1, X2);

	if ((Root < 0) || (A == 0))
	{
		if ((B == 0) && (A == 0))
			printf("X has no solution.\n");
		else
		{
			if (A == 0)
				printf("X = %.1f\n", ((-C) / B));
			else
				if (Root == 0)
					printf("X= %/1f\n", Root2);
				else // E<0
					printf("X has no solution.\n");
		}
	}
	else
		printf("X1= %.1f X2= %.1f\n", X1, X2);
}