/in/foo.cc: In function 'int main()':
/in/foo.cc:21:15: error: 'n\U0000ff1b' was not declared in this scope
   21 |          cin>>n；
      |               ^~~
/in/foo.cc:26:22: error: 'a' was not declared in this scope
   26 |                 cin>>a[i];
      |                      ^
/in/foo.cc:29:20: error: 'a' was not declared in this scope
   29 |         FindMaxn(n,a);
      |                    ^