[10] Passed Time

start_time = input("Enter the time in format HH:MM:SS: ")
end_time = input("Enter the time in format HH:MM:SS: ")

start_seconds = int(start_time[0] + start_time[1]) * 3600 + int(start_time[3] + start_time[4]) * 60 + int(start_time[6] + start_time[7])
end_seconds = int(end_time[0] + end_time[1]) * 3600 + int(end_time[3] + end_time[4]) * 60 + int(end_time[6] + end_time[7])

hours = (end_seconds - start_seconds) // 3600
minutes = ((end_seconds - start_seconds) // 60) % 60
seconds = (end_seconds - start_seconds) % 60

print(f"The time that passed is {hours}:{minutes}:{seconds}.")