제출 #756964

#제출 시각아이디문제언어결과실행 시간메모리
756964doowey서열 (APIO23_sequence)C++17
컴파일 에러
0 ms0 KiB
#include "sequence.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> pii; #define fi first #define se second #define mp make_pair const int N = 2050; int cnt[N]; int tree[N * 4 + 512]; void add(int node, int cl, int cr, int id){ tree[node] ++ ; if(cl == cr){ return; } int mid = (cl + cr) / 2; if(mid >= id) add(node * 2, cl, mid, id); else add(node * 2 + 1, mid + 1, cr, id); } int find_idx(int node, int cl, int cr, int lim){ if(cl == cr) { return tree[node]; } int mid = (cl + cr) / 2; if(tree[node * 2] >= lim){ return find_idx(node * 2, cl, mid, lim); } else{ return find_idx(node * 2 + 1, mid + 1, cr, lim - tree[node * 2]); } } void init(int node, int cl, int cr){ tree[node] = 0; if(cl == cr) return; int mid = (cl + cr) / 2; init(node * 2, cl, mid); init(node * 2 + 1, mid + 1, cr); } int sequence(int n, vector<int> a) { if(n > 2000){ int las = -1; int cnt = 0; int res = 0; for(int i = 0 ; i < n; i ++ ){ if(a[i] == las){ cnt ++ ; } else{ cnt = 1; las = a[i]; } res = max(res, cnt); } return res; } int ans = 0; int sz; int me; for(int i = 0 ; i < n; i ++) { init(1, 1, n); for(int j = i ; j < n; j ++) { add(1, 1, n, a[j]); sz = j - i + 1; if(sz % 2 == 1){ me = (sz + 1) / 2; ans = max(ans, find_idx(1, 1, n, me)); } else{ me = (sz + 1) / 2; ans = max(ans, find_idx(1, 1, n, me)); ans = max(ans, find_idx(1, 1, n, me + 1)); } } for(auto x : me) cnt[x] = 0; } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

sequence.cpp: In function 'int sequence(int, std::vector<int>)':
sequence.cpp:85:22: error: 'begin' was not declared in this scope
   85 |         for(auto x : me) cnt[x] = 0;
      |                      ^~
sequence.cpp:85:22: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from sequence.cpp:2:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from sequence.cpp:2:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
sequence.cpp:85:22: error: 'end' was not declared in this scope
   85 |         for(auto x : me) cnt[x] = 0;
      |                      ^~
sequence.cpp:85:22: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from sequence.cpp:2:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from sequence.cpp:2:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~