Problem	integralmania
User	liuhc1017
Submission Time	2026-07-11 09:52:40
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

integralmania.cpp:25:1: error: stray ‘`’ in program
25 | ` dq.pop_front();
| ^
integralmania.cpp: In function ‘int main()’:
integralmania.cpp:32:23: error: no match for ‘operator<’ (operand types are ‘std::basic_ostream<char>::__ostream_type’ {aka ‘std::basic_ostream<char>’} and ‘<unresolved overloaded function type>’)
32 | cout<<even_sum<endl;
| ~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/9/bits/stl_algobase.h:64,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/ostream:38,
from /usr/include/c++/9/iostream:39,
from integralmania.cpp:1:
/usr/include/c++/9/bits/stl_pair.h:454:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T