foo.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
foo.c:3:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'def'
    3 | def calculate_swimming_steps(distance):
      | ^~~
foo.c:3:1: error: unknown type name 'def'
foo.c:4:27: error: stray '#' in program
    4 |     initial_distance = 2  # 第1下游的距离
      |                           ^
foo.c:5:28: error: stray '#' in program
    5 |     reduction_rate = 0.96  # 每一步的距离减少率
      |                            ^
foo.c:16:3: error: invalid preprocessing directive #\U00008f93\U00005165\U00005bf9\U00005cb8\U00007684\U00008ddd\U000079bb
   16 | # 输入对岸的距离
      |   ^~~~~~~~~~~~~~
foo.c:19:3: error: invalid preprocessing directive #\U00008ba1\U00007b97\U00006e38\U00006cf3\U00006b65\U00006570\U00005e76\U00008f93\U000051fa
   19 | # 计算游泳步数并输出
      |   ^~~~~~~~~~~~~~~~~~

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