#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;

constexpr char newl = '\n';

// https://atcoder.jp/contests/tricky/submissions/15103401
void solve(){
	ll a,b,c; scanf("%lld%lld%lld",&a,&b,&c);
 
	if(a==0){
		if(b==0){
			if(c==0) puts("3");
			else     puts("imaginary");
		}
		else{
			printf("%.15f\n",-1.0*c/b);
		}
	}
	else{
		if(b*b%4==0 && b*b/4==a*c){
			printf("%.15f\n",-b/(2.0*a));
		}
		else if(b*b/4>=a*c){
			double d=(b/2.0)*(b/2.0)-a*c;
			double sol[2];
			if(b>0){
				sol[0]=(-b/2.0-sqrt(d))/a;
				sol[1]=-c/(b/2.0+sqrt(d));
			}
			else{ // b<0
				sol[0]=-c/(b/2.0-sqrt(d));
				sol[1]=(-b/2.0+sqrt(d))/a;
			}
			sort(sol,sol+2);
			printf("%.15f %.15f\n",sol[0],sol[1]);
		}
		else{
			puts("imaginary");
		}
	}
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    solve();
    return 0;
}