#include<bits/stdc++.h>

using namespace std;

int main(){

    double a,b,c,x1,x2;

	cin>>a>>b>>c;

if(fabs(b*b-4*a*c)<1e-8) { printf("x1=x2=%.5lf\n",x1); return 0; }

	x1=(-b+sqrt(b*b-4*a*c))*1.0/(2*a);

	x2=(-b-sqrt(b*b-4*a*c))*1.0/(2*a);

	if(b*b==4*a*c) printf("x1=x2=%.5lf\n",x1);

	printf("x1=%.5lf;x2=%.5lf\n",min(x1,x2),max(x1,x2));

	return 0;

}