??????????????????????????year ??month??day??month??day??year??????????????????1≤month≤12??1≤day≤31??1981≤year≤2050????????????????????????·????????????????????????????????????????????????ж???????ó???????????????μ??????????

???????:

?????????????????????????????

????M1??{?·?? ?????30??}

????M2??{?·?? ?????31?? 12?3???}

????M3??{?·??12??}

????M4??{?·??2??}

????D1??{?????1<=????<=26}

????D2??{?????27}

????D3??{?????28}

????D4??{?????29}

????D5??{?????30}

????D6??{?????31}

????Y1 ??{??????????}

????Y2 ??{??????????}

?????????ж???

 

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