题目链接:

https://www.lanqiao.cn/problems/103/learning/?page=1&first_category_id=1&name=%E6%97%A5%E6%9C%9F%E9%97%AE%E9%A2%98

题目内容：

解题思路

import os
import sys

# 请在此输入您的代码
from datetime import datetime
date_str = input().strip()
A, B, C = map(int, date_str.split('/'))
ans = set()
def con_year(x):
    if x>=60:
        return x+1900
    else:
        return x+2000
# 年月日
try:
    y = con_year(A)
    dt = datetime(y, B, C)
    if datetime(1960,1,1)<=dt<=datetime(2059,12,31):
        ans.add(dt)
except ValueError:
    pass

# 月日年
try:
    y = con_year(C)
    dt = datetime(y, A, B)
    if datetime(1960,1,1)<=dt<=datetime(2059,12,31):
        ans.add(dt)
except ValueError:
    pass

# 日月年
try:
    y = con_year(C)
    dt = datetime(y, B, A)
    if datetime(1960,1,1)<=dt<=datetime(2059,12,31):
        ans.add(dt)
except ValueError:
    pass
# print(ans)

for dt in sorted(ans):
    print(dt.strftime("%Y-%m-%d"))