foo.cc:1:1: error: stray '\350' in program
    1 | 调查
      | ^
foo.cc:1:2: error: stray '\260' in program
    1 | 调查
      |  ^
foo.cc:1:3: error: stray '\203' in program
    1 | 调查
      |   ^
foo.cc:1:4: error: stray '\346' in program
    1 | 调查
      |    ^
foo.cc:1:5: error: stray '\237' in program
    1 | 调查
      |     ^
foo.cc:1:6: error: stray '\245' in program
    1 | 调查
      |      ^

[Hydro](https://hydro.ac)提供评测服务