/in/foo.cc:143:3: error: stray '\344' in program
 AC代码
   ^
/in/foo.cc:143:4: error: stray '\273' in program
 AC代码
    ^
/in/foo.cc:143:5: error: stray '\243' in program
 AC代码
     ^
/in/foo.cc:143:6: error: stray '\347' in program
 AC代码
      ^
/in/foo.cc:143:7: error: stray '\240' in program
 AC代码
       ^
/in/foo.cc:143:8: error: stray '\201' in program
 AC代码
        ^
/in/foo.cc: In function 'bool check(int)':
/in/foo.cc:89:13: warning: unused variable 'ha' [-Wunused-variable]
         int ha=0;
             ^~
/in/foo.cc: At global scope:
/in/foo.cc:143:1: error: 'AC' does not name a type
 AC代码
 ^~