Problem	childsetter4
User	Secre
Submission Time	2025-06-17 10:11:00
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

childsetter4.cpp: In function ‘int main()’:
childsetter4.cpp:9:15: error: no match for ‘operator<’ (operand types are ‘std::basic_ostream<char>’ and ‘<unresolved overloaded function type>’)
9 | cout<<Y<<""<<X<endl;
| ~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from childsetter4.cpp:1:
/usr/include/c++/9/bits/regex.h:1048:5: note: candidate: ‘template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)’
1048 | operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1048:5: note: template argument deduction/substitution failed:
childsetter4.cpp:9:16: note: ‘std::basic_ostream<char>’ is not derived