foo.cc:8:1: error: stray '\343' in program
 　ret0;
 ^
foo.cc:8:2: error: stray '\200' in program
 　ret0;
  ^
foo.cc:8:3: error: stray '\200' in program
 　ret0;
   ^
foo.cc:4:6: error: expected unqualified-id before ')' token
 int ()
      ^

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