/in/foo.cc: In function 'int main()':
/in/foo.cc:7:13: error: expected '(' before '\U0000ff08int'
    7 |         for （int i=1;i<=2*n-1;i++）
      |             ^~~~~
      |             (
/in/foo.cc:7:13: error: '\U0000ff08int' was not declared in this scope
    7 |         for （int i=1;i<=2*n-1;i++）
      |             ^~~~~
/in/foo.cc:7:23: error: 'i' was not declared in this scope
    7 |         for （int i=1;i<=2*n-1;i++）
      |                       ^
/in/foo.cc:7:35: error: expected ')' before '\U0000ff09'
    7 |         for （int i=1;i<=2*n-1;i++）
      |             ~~~~~                 ^~
      |                                   )
/in/foo.cc:7:35: error: '\U0000ff09' was not declared in this scope
    7 |         for （int i=1;i<=2*n-1;i++）
      |                                   ^~