제출 #879095

#제출 시각아이디문제언어결과실행 시간메모리
879095serifefedartarFactories (JOI14_factories)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #include "factories.h" using namespace std; #define fast ios::sync_with_stdio(0);cin.tie(0); #define s second #define f first typedef long long ll; const ll MOD = 1e9 + 9; const ll LOGN = 21; const ll MAXN = 5e5 + 100; vector<vector<pair<int,int>>> graph; int marked[MAXN], sz[MAXN], up[LOGN][MAXN], depth[MAXN]; int par[MAXN]; ll depth_dist[MAXN], ans[MAXN]; int get_sz(int node, int parent) { sz[node] = 1; for (auto u : graph[node]) { if (u.f == parent || marked[u.f]) continue; sz[node] += get_sz(u.f, node); } return sz[node]; } int find_centro(int node, int parent, int n) { for (auto u : graph[node]) { if (u.f != parent && !marked[u.f] && sz[u.f] * 2 > sz[node]) return find_centro(u.f, node, n); } return node; } void decompose(int node, bool q) { int n = get_sz(node, node); int centro = find_centro(node, node, n); marked[centro] = true; if (q) par[centro] = -1; else par[centro] = node; for (auto u : graph[centro]) { if (!marked[u.f]) decompose(u.f, false); } } void dfs(int node, int parent) { for (auto u : graph[node]) { if (u.f == parent) continue; depth[u.f] = depth[node] + 1; depth_dist[u.f] = depth_dist[node] + u.s; up[0][u.f] = node; for (int i = 1; i < LOGN; i++) up[i][u.f] = up[i-1][up[i-1][u.f]]; dfs(u.f, node); } } int find(int node, int k) { for (int i = 0; i < LOGN; i++) { if ((1<<i) & k) node = up[i][node]; } return node; } int lca(int a, int b) { if (depth[b] > depth[a]) swap(a, b); a = find(a, depth[a] - depth[b]); if (a == b) return a; for (int i = LOGN - 1; i >= 0; i--) { if (up[i][a] != up[i][b]) { a = up[i][a]; b = up[i][b]; } } return up[0][a]; } ll dist(int a, int b) { return depth_dist[a] + depth_dist[b] - 2 * depth_dist[lca(a, b)]; } void Init(int N, int A[], int B[], int D[]) { graph = vector<vector<pair<int,int>>>(N+1, vector<pair<int,int>>()); for (int i = 0; i < N-1; i++) { graph[A[i]].push_back({B[i], D[i]}); graph[B[i]].push_back({A[i], D[i]}); } dfs(1, 1); decompose(1, true); for (int i = 0; i < MAXN; i++) ans[i] = 1e15; } void add(int node) { int now = node; while (now != -1) { ans[now] = min(ans[now], dist(now, node)); now = par[now]; } } void remove(int node) { while (node != -1) { ans[node] = 1e15; node = par[node]; } } ll qry(int node) { int now = node; ll res = 1e15; while (now != -1) { res = min(res, dist(now, node) + ans[now]); now = par[now]; } return res; } ll Query(int S, int X[], int T, int Y[]) { for (auto u : X) add(u); ll mn = 1e16; for (auto u : Y) mn = min(mn, qry(u)); for (auto u : X) remove(u); return mn; }

컴파일 시 표준 에러 (stderr) 메시지

factories.cpp: In function 'll Query(int, int*, int, int*)':
factories.cpp:132:16: error: 'begin' was not declared in this scope
  132 |  for (auto u : X)
      |                ^
factories.cpp:132:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
factories.cpp:132:16: error: 'end' was not declared in this scope
  132 |  for (auto u : X)
      |                ^
factories.cpp:132:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
factories.cpp:136:16: error: 'begin' was not declared in this scope
  136 |  for (auto u : Y)
      |                ^
factories.cpp:136:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
factories.cpp:136:16: error: 'end' was not declared in this scope
  136 |  for (auto u : Y)
      |                ^
factories.cpp:136:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
factories.cpp:139:16: error: 'begin' was not declared in this scope
  139 |  for (auto u : X)
      |                ^
factories.cpp:139:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
factories.cpp:139:16: error: 'end' was not declared in this scope
  139 |  for (auto u : X)
      |                ^
factories.cpp:139:16: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from factories.cpp:1:
/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 factories.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~