# your code goes here
n=input("enter no of testcases")
for i in range(int (n)):
s,sg,fg,d,t=input("entries ").split()
x=(5*float(s)*float(t))/18
v2=(float(x)+50*float(d))/float(t)
vfinal=(18*float(v2))/5
if (abs(float(vfinal)-float(sg))>abs(float(vfinal)-float(fg))):
print("father")
elif (abs(float(vfinal)-float(sg))<abs(float(vfinal)-float(fg))):
print("sebi")
else:
print("draw")
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