program water_bill
implicit none
integer :: meter_0, meter_1, usage, basic_fee, total_fee
basic_fee = 1375
read(*, *) meter_0
read(*, *) meter_1
usage = meter_1 - meter_0
if (usage > 60) then
total_fee = basic_fee + 11*8 + 169.40*20 + (usage-40)*233.20
else if (usage > 40) then
total_fee = basic_fee + 11*8 + 169.40*20
else if (usage > 20) then
total_fee = basic_fee + 11*(usage-12)
else if (usage > 13) then
total_fee = basic_fee + (usage-12)*11
else
total_fee = basic_fee
end if
print *, "使用水量: ", usage
print *, "水道料金: ", INT(total_fee)
end program water_bill
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