Problem	longesttrip
User	justin271828
Submission Time	2026-05-19 14:31:50
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

longesttrip.cpp: In function ‘std::vector<int> longest_trip(int, int)’:
longesttrip.cpp:11:29: error: ‘swap’ was not declared in this scope
11 | if (!are_connected(A, B)) swap(ans[i], ans[(i+1)%N]);
| ^~~~
longesttrip.cpp:11:29: note: suggested alternatives:
In file included from /usr/include/c++/9/vector:68,
from longesttrip.h:1,
from longesttrip.cpp:1:
/usr/include/c++/9/bits/stl_bvector.h:134:3: note: ‘std::swap’
134 | swap(bool& __x, _Bit_reference __y) noexcept
| ^~~~
In file included from /usr/include/c++/9/bits/stl_pair.h:59,
from /usr/include/c++/9/bits/stl_algobase.h:64,
from /usr/include/c++/9/vector:60,
from longesttrip.h:1,
from longesttrip.cpp:1:
/usr/include/c++/9/bits/move.h:182:5: note: ‘std::swap’
182 | swap(_Tp& __a, _Tp& __b)
| ^~~~
/u