/in/foo.cc: In function 'int main()':
/in/foo.cc:7:13: error: '\U0000ff08a' was not declared in this scope
    7 |         if (（a<60 && b>=60） || (b<60 && a>=60))
      |             ^~~
/in/foo.cc:7:26: error: unable to find numeric literal operator 'operator""\U0000ff09'
    7 |         if (（a<60 && b>=60） || (b<60 && a>=60))
      |                          ^~~~
/in/foo.cc:7:26: note: use '-fext-numeric-literals' to enable more built-in suffixes