View Compilation Error

0_0_38843525_6501.cpp:1:6: error: found ':' in nested-name-specifier, expected '::'
    1 | https://acm.hdu.edu.cn/showproblem.php?pid=1078
      |      ^
      |      ::
0_0_38843525_6501.cpp:1:1: error: 'https' does not name a type
    1 | https://acm.hdu.edu.cn/showproblem.php?pid=1078
      | ^~~~~