foo.c:1:1: warning: data definition has no type or storage class
    1 | a = int(input()) #获取年份
      | ^
foo.c:1:1: warning: type defaults to ‘int’ in declaration of ‘a’ [-Wimplicit-int]
foo.c:1:5: error: expected expression before ‘int’
    1 | a = int(input()) #获取年份
      |     ^~~
foo.c:1:18: error: stray ‘#’ in program
    1 | a = int(input()) #获取年份
      |                  ^
foo.c:2:59: error: stray ‘#’ in program
    2 | b = int((a % 4 == 0 and a % 100 != 0) or a % 400 == 0)+28 #计算二月长度
      |                                                           ^
foo.c:4:2: error: invalid preprocessing directive #\U00004ece\U00005f97\U00005230\U00007684\U00008fd9\U00005e74\U00006708\U00004efd\U0000957f\U00005ea6\U00006570\U00007ec4\U0000ff08\U000090e8\U00005206\U00006253\U00008868\U0000ff09\U00004e2d\U000062bd\U000053d6\U000076f8\U00005173\U00006708\U00005e76\U000076f4\U000063a5\U00008f93\U000051fa
    4 | #从得到的这年月份长度数组（部分打表）中抽取相关月并直接输出
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~