n = int(input())
k = 0
s = 0
cnt = 0
KK = 100000000
while(k<n):
ss = input()
if ss=="":
z = round((s-cnt)*100/s, 1)
if z * 100 // 1 == (z // 1) * 100:
print("Efficiency ratio is %d%%." % z)
else:
print("Efficiency ratio is %.1f%%." % z)
k+=1
cnt = 0
s = 0
continue
else:
cnt+=ss.count("#")
s+=len(ss)