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#!/usr/bin/env python3
import re
import sys
def time_to_minute(s: str) -> int:
if not re.match(r'^\d{1,2}:\d{2}$', s):
raise ValueError("Invalid time format, should be HH:MM")
hour, minute = map(int, s.split(':'))
if hour < 0 or hour > 23 or minute < 0 or minute > 59:
raise ValueError("Invalid time format")
return hour * 60 + minute
def convert_time(source: str, target: str) -> int:
# Convert the time to minutes past midnight, and calculate the minutes
# between them
duration = time_to_minute(target) - time_to_minute(source)
if duration < 0:
# Adjust for next day
duration += 24 * 60
# Possible increments in minutes
moves = [60, 15, 5, 1]
count = 0
for move in moves:
# Use as many of this move as possible
count += duration // move
# The remaining minutes
duration %= move
return count
def main():
result = convert_time(sys.argv[1], sys.argv[2])
print(result)
if __name__ == '__main__':
main()
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