/in/foo.cc:18:9: error: stray '\357' in program
 return 0；
         ^
/in/foo.cc:18:10: error: stray '\274' in program
 return 0；
          ^
/in/foo.cc:18:11: error: stray '\233' in program
 return 0；
           ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:19:1: error: expected ';' before '}' token
 }
 ^
/in/foo.cc:7:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k,n,m,jz=0;
          ^
/in/foo.cc:7:16: warning: unused variable 'jz' [-Wunused-variable]
  int i,j,k,n,m,jz=0;
                ^~