s 年 = 2023
s 月 = 11
java(ym,null,"java.time.YearMonth.of","int",年,"int",月)
java(日,ym,"java.time.YearMonth.lengthOfMonth")
syso(日)
THE END
s 年 = 2023
s 月 = 11
java(ym,null,"java.time.YearMonth.of","int",年,"int",月)
java(日,ym,"java.time.YearMonth.lengthOfMonth")
syso(日)
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