제출 #963953

#제출 시각아이디문제언어결과실행 시간메모리
963953vjudge1Meetings 2 (JOI21_meetings2)C++17
20 / 100
4046 ms17492 KiB
// #pragma GCC target("avx2") // #pragma GCC optimize("O3") // #include <x86intrin.h> #include <bits/stdc++.h> #include <chrono> #include <random> // @author: Vlapos namespace operators { template <typename T1, typename T2> std::istream &operator>>(std::istream &in, std::pair<T1, T2> &x) { in >> x.first >> x.second; return in; } template <typename T1, typename T2> std::ostream &operator<<(std::ostream &out, std::pair<T1, T2> x) { out << x.first << " " << x.second; return out; } template <typename T1> std::istream &operator>>(std::istream &in, std::vector<T1> &x) { for (auto &i : x) in >> i; return in; } template <typename T1> std::ostream &operator<<(std::ostream &out, std::vector<T1> &x) { for (auto &i : x) out << i << " "; return out; } template <typename T1> std::ostream &operator<<(std::ostream &out, std::set<T1> &x) { for (auto &i : x) out << i << " "; return out; } } // name spaces using namespace std; using namespace operators; // end of name spaces // defines #define ll long long #define ull unsigned long long #define pb push_back #define mp make_pair #define pii pair<int, int> #define pll pair<ll, ll> #define f first #define s second #define uint unsigned int #define all(vc) vc.begin(), vc.end() // end of defines // usefull stuff void boost() { ios_base ::sync_with_stdio(false); cin.tie(0); cout.tie(0); } inline int getbit(int &x, int &bt) { return (x >> bt) & 1; } const int dx4[4] = {-1, 0, 0, 1}; const int dy4[4] = {0, -1, 1, 0}; const int dx8[8] = {-1, -1, -1, 0, 0, 1, 1, 1}; const int dy8[8] = {-1, -0, 1, -1, 1, -1, 0, 1}; const ll INF = (1e18) + 500; const int BIG = (1e9) * 2 + 100; const int MAXN = (1e5) + 5; const int MOD7 = (1e9) + 7; const int MOD9 = (1e9) + 9; const uint MODFFT = 998244353; // #define int ll struct segTreeSum { vector<int> tree; int sz; void init(int n) { sz = n; tree.resize(2 * sz, -1); } int get(int l, int r) // [l, r) { l += sz; r += sz; int res = 0; while (l < r) { if (l & 1) res = max(res, tree[l++]); if (r & 1) res = max(res, tree[--r]); l >>= 1; r >>= 1; } return res; } void set(int pos, int val) { pos += sz; tree[pos] = max(val, tree[pos]); pos >>= 1; while (pos) { tree[pos] = max(tree[pos << 1], tree[(pos << 1) + 1]); pos >>= 1; } } }; struct test { vector<vector<int>> tree; vector<int> answers, used, sz; segTreeSum rng; int n; void dfsSz(int v, int pr = -1) { sz[v] = 1; for (auto tov : tree[v]) if (tov != pr and !used[tov]) { dfsSz(tov, v); sz[v] += sz[tov]; } } void dfs(int v, int d, int pr, int SZ) { int p = min(SZ, sz[v]); answers[p * 2] = max(answers[p * 2], d); for (auto tov : tree[v]) { if (tov != pr) dfs(tov, d + 1, v, SZ); } } void solve(int testcase) { boost(); cin >> n; used.resize(n); sz.resize(n); rng.init(n); tree.resize(n); answers.resize(n + 1); for (int i = 0; i < n - 1; ++i) { int v, tov; cin >> v >> tov; --v, --tov; tree[v].pb(tov); tree[tov].pb(v); } for (int i = 0; i < n; ++i) { dfsSz(i); for (auto tov : tree[i]) dfs(tov, 2, i, n - sz[tov]); } for (int i = (n / 2) * 2 - 2; i > 0; i -= 2) { answers[i] = max(answers[i], answers[i + 2]); } for (int i = 1; i <= n; ++i) { cout << max(1, answers[i]) << "\n"; } } }; main() { boost(); int q = 1; // cin >> q; for (int i = 0; i < q; i++) { test t; t.solve(i); } return 0; } //[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]// // // // Coded by Der_Vlἀpos // // // //[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]//

컴파일 시 표준 에러 (stderr) 메시지

meetings2.cpp:205:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  205 | main()
      | ^~~~
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