33 lines
475 B
C++
33 lines
475 B
C++
#include<stdio.h>
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#include<math.h>
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int main()
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{
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int t;
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int a,b,c;
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double x1,x2,x,temp;
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scanf("%d",&t);
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while(t--)
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{
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scanf("%d%d%d",&a,&b,&c);
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x=b*b-4*a*c;
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if(x<0)
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printf("NO\n");
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else if(x==0)
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{
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x1=-1.0*b/(2*a);
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printf("%.2f\n",x1);
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}
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else if(x>0)
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{
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x1=(-1.0*b-sqrt(x))/(2*a);
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x2=(-1.0*b+sqrt(x))/(2*a);
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if(x1>x2)
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{
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temp=x1;x1=x2;x2=temp;
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}
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printf("%.2f %.2f\n",x1,x2);
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}
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}
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return 0;
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}
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