#include <stdio.h>
#include <stdlib.h>
#include <math.h>

FILE *in;

int main()
{
    int n,a,b,c,i,d;
    double x1,x2,D;
   
    in=fopen("in.txt", "r");
  
    if(in!=NULL)
    {
      fscanf(in,"%d",&n);
      for(i=1;i<=n;i++)
      {
        fscanf(in,"%d %d %d",&a, &b, &c);
        d=b*b-4*a*c;
      }
     
       
        if(x1>0,x2>0)
        {
          D=pow(b,2)-4*a*c;
          x1=(-b+sqrt(D))/(2*a);
          x2=(-b-sqrt(D))/(2*a);
          printf("兩根解為:%.3lf或%.3lf\n",x1,x2);
        }
        else
        printf("none\n");
        fclose(in);
      }
    }
    else
    {
     printf("File Opening Failure\n");
    }

   
   
    fclose(in);

    system("PAUSE");
    return 0;
}