#include <iostream>

#include <math.h>

using namespace std;

int main(){

int a,b,c,d,x1,x2;

cout<<"請輸入三個整數"; 

while(cin>>a>>b>>c)

{

if(a!=0)

{

d=b*b-4*a*c;

if(d>0)

{

x1=(-b+sqrt(d))/(2*a);

x2=(-b-sqrt(d))/(2*a);

cout<<"Two different roots "<<"x1="<<x1<<" , x2="<<x2<<endl ;

}

else if(d==0)

{

x1=(-b)/(2*a);

cout<<"Two same roots "<<"x="<<x1<<endl;

}

 else

 {

 cout<<"No real root" <<endl;

} 

} 

}

}