tjut 3011

#include<cstdio> #include<cstring> #include<cmath> int main(){ double r,a,b,c,t; double x1,x2; while(scanf("%lf%lf",&r,&a)!=EOF){ t=-1.0; b=r-a; c=r*r*r/a/2-2*r*r+a*r; if(b*b-4*c<0) { printf("Oh, my god!\n"); continue; } x1=(-b+sqrt(b*b-4*c))/2; x2=(-b-sqrt(b*b-4*c))/2; if(x1>=0&&x1<=r) t=x1; else if(x2>=0&&x2<=r) t=x2; if(t>=0&&t<=r) printf("%.2lf\n",t); else printf("Oh, my god!\n"); } return 0; }