#!/usr/bin/env python3

charge_now_path = "/sys/class/power_supply/BAT0/charge_now"
current_now_path = "/sys/class/power_supply/BAT0/current_now"

f = open(charge_now_path, "r")
charge_now = int(f.readlines()[0])
f = open(current_now_path, "r")
current_now = int(f.readlines()[0])

ratio = charge_now / current_now * 100

hours = ratio / 60
minutes = ratio % 60

print(str(hours) + ":" + str(minutes))