Problem	nonboringsequences
User	jiazethesigma
Submission Time	2026-09-27 15:08:32
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

nonboringsequences.cpp: In function ‘bool check(int, int)’:
nonboringsequences.cpp:10:6: error: reference to ‘prev’ is ambiguous
10 | if(prev[x]<l && next[x]>r) return check(l,x-1) && check(x+1,r);
| ^~~~
In file included from /usr/include/c++/9/bits/stl_algobase.h:66,
from /usr/include/c++/9/bits/specfun.h:45,
from /usr/include/c++/9/cmath:1927,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:41,
from nonboringsequences.cpp:1:
/usr/include/c++/9/bits/stl_iterator_base_funcs.h:224:5: note: candidates are: ‘template<class _BidirectionalIterator> constexpr _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)’
224 | prev(_BidirectionalIterator __x, typename
| ^~~~
nonboringsequences.cpp:4:5: note: ‘int prev [200005]’
4 | int prev[maxn], next[maxn],x[