30 lines
613 B
C++
30 lines
613 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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double r,a,b,c,t;
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double x1,x2;
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while(scanf("%lf%lf",&r,&a)!=EOF)
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{
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t=-1.0;
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b=r-a;
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c=r*r*r/a/2-2*r*r+a*r;
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if(b*b-4*c<0)
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{
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printf("Oh, my god!\n");
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continue;
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}
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x1=(-b+sqrt(b*b-4*c))/2;
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x2=(-b-sqrt(b*b-4*c))/2;
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if(x1>=0&&x1<=r)
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t=x1;
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else if(x2>=0&&x2<=r)
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t=x2;
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if(t>=0&&t<=r)
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printf("%.2lf\n",t);
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else
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printf("Oh, my god!\n");
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}
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return 0;
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}
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