#!/usr/bin/lua

rsrp = tonumber(arg[1])
bw = tonumber(arg[2])
if bw == 1.4 then
	n = 6
else
	n = bw * 5
end

if tonumber(string.match(_VERSION, "%d+%.%d")) > 5.1 then
	rssi = rsrp + (10 * math.log(n * 12, 10))
else
	rssi = rsrp + (10 * math.log10(n * 12))
end
if rssi < -113 then
	rssi = -113
elseif rssi > -51 then
	rssi = -51
end
print(math.floor(rssi))
