/in/foo.cc:3:18: error: stray '#' in program
    3 | MOD = 998244353  # 定义模数
      |                  ^
/in/foo.cc:5:3: error: invalid preprocessing directive #\U00005b9a\U00004e49\U000077e9\U00009635
    5 | # 定义矩阵 A
      |   ^~~~~~~~
/in/foo.cc:10:3: error: invalid preprocessing directive #\U00005b9a\U00004e49\U0000521d\U000059cb\U00005411\U000091cf
   10 | # 定义初始向量 [F(2), F(1), F(0)] = [1, 1, 1]
      |   ^~~~~~~~~~~~
/in/foo.cc:19:41: error: stray '#' in program
   19 |     result = np.eye(len(A), dtype=int)  # 单位矩阵
      |                                         ^
/in/foo.cc:36:7: error: invalid preprocessing directive #\U00004f7f\U00007528\U000077e9\U00009635\U00005feb\U0000901f\U00005e42\U00006765\U00008ba1\U00007b97
   36 |     # 使用矩阵快速幂来计算 A^(n-3)
      |       ^~~~~~~~~~~~~~~~~~~~
/in/foo.cc:39:7: error: invalid preprocessing directive #print
   39 |     # print(A_n_minus_2)
      |       ^~~~~
/in/foo.cc:41:7: error: invalid preprocessing directive #\U00008ba1\U00007b97
   41 |     # 计算 F(n) = A^(n-3) * [F(3), F(2), F(1)]^T
      |       ^~~~
/in/foo.cc:44:7: error: invalid preprocessing directive #\U00008fd4\U000056de
   44 |     # 返回 F(n)
      |       ^~~~
/in/foo.cc:47:3: error: invalid preprocessing directive #\U00008f93\U00005165n\U00005e76\U00008f93\U000051faF
   47 | # 输入n并输出F(n)
      |   ^~~~~~~~~~~~
/in/foo.cc:1:1: error: 'import' does not name a type
    1 | import numpy as np
      | ^~~~~~
/in/foo.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'