#include<bits/stdc++.h> using namespace std; double a,b,c,d; int check(double x){ if(abs(a*x*x*x+b*x*x+c*x+d)<0.01)return 0; return 1; } int main() { cin>>a>>b>>c>>d; for(double i=-100;i<100;i+=0.01){ if(check(i)==0)printf("%0.2lf ",i); } }