/in/foo.cc: In function 'int main()':
/in/foo.cc:27:29: error: 't2\U0000ff09\U0000ff1b' was not declared in this scope
   27 |         int time2=t2.Second(t2）；
      |                             ^~~~~~
/in/foo.cc:26:13: warning: unused variable 'time1' [-Wunused-variable]
   26 |         int time1=t1.Second(t1);
      |             ^~~~~
/in/foo.cc:27:13: warning: unused variable 'time2' [-Wunused-variable]
   27 |         int time2=t2.Second(t2）；
      |             ^~~~~