# your code goes here
max_tok = [248] * 10
time_r = [2.7360419921875, 2.743791748046875, 2.74620849609375, 2.745671630859375, 2.74880517578125, 2.7512587890625, 2.7522890625, 2.757704345703125, 2.758000732421875, 2.761377685546875]
ans = 0.0
for i in range(10):
ans += max_tok[i] / time_r[i]
ans /= 10.0
print(ans)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCm1heF90b2sgPSBbMjQ4XSAqIDEwCnRpbWVfciA9IFsyLjczNjA0MTk5MjE4NzUsIDIuNzQzNzkxNzQ4MDQ2ODc1LCAyLjc0NjIwODQ5NjA5Mzc1LCAyLjc0NTY3MTYzMDg1OTM3NSwgMi43NDg4MDUxNzU3ODEyNSwgMi43NTEyNTg3ODkwNjI1LCAyLjc1MjI4OTA2MjUsIDIuNzU3NzA0MzQ1NzAzMTI1LCAyLjc1ODAwMDczMjQyMTg3NSwgMi43NjEzNzc2ODU1NDY4NzVdCmFucyA9IDAuMApmb3IgaSBpbiByYW5nZSgxMCk6CglhbnMgKz0gbWF4X3Rva1tpXSAvIHRpbWVfcltpXQphbnMgLz0gMTAuMApwcmludChhbnMp