def is_leap_year(year):
if year <= 1582:
return "年份必须大于1582年"
if (year % 400 == 0) or (year % 100 != 0 and year % 4 == 0):
return f"{year}年是闰年"
else:
return f"{year}年不是闰年"
year = int(input())
print(is_leap_year(year))
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