sw="日一二三四五六"
y=int(input("请输入年份:"))
m=int(input("请输入月份:"))
d=int(input("请输入日期:"))
print(y, "年", m, "月", d, "日")
if :
m=
y=
week=(d+2*m+3*(m+1)//5+y+y//4-y//100+y//400+1)%7
Weekday=
print("星期", week)
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