結果

問題 No.1718 Random Squirrel
ユーザー ecottea
提出日時 2021-10-23 03:06:36
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 407 ms / 2,000 ms
コード長 13,418 bytes
コンパイル時間 4,894 ms
コンパイル使用メモリ 248,132 KB
実行使用メモリ 53,872 KB
最終ジャッジ日時 2024-09-24 14:20:30
合計ジャッジ時間 10,541 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 31
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ソースコード

diff #
プレゼンテーションモードにする

#ifndef HIDDEN_IN_VISUAL_STUDIO //
//
#define _CRT_SECURE_NO_WARNINGS
// 使
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = 3.14159265359;
const double DEG = PI / 180.; // θ [deg] = θ * DEG [rad]
const vi dx4 = { 1, 0, -1, 0 }; // 4
const vi dy4 = { 0, 1, 0, -1 };
const vi dx8 = { 1, 1, 0, -1, -1, -1, 0, 1 }; // 8
const vi dy8 = { 0, 1, 1, 1, 0, -1, -1, -1 };
const ll INFL = (ll)2e18; const int INF = (int)1e9;
const double EPS = 1e-10; // 調
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define distance (int)distance
#define Yes(b) {cout << ((b) ? "Yes" : "No") << endl;}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0; set < (1 << int(d)); ++set) // d
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define repit(it, a) for(auto it = (a).begin(); it != (a).end(); ++it) //
#define repitr(it, a) for(auto it = (a).rbegin(); it != (a).rend(); ++it) //
//
template <class T> inline ll pow(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
// >>, <<
template <class T, class U> inline istream& operator>> (istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T, class U> inline ostream& operator<< (ostream& os, const pair<T, U>& p) { os << "(" << p.first << "," << p.second << ")"; return os
    ; }
template <class T, class U, class V> inline istream& operator>> (istream& is, tuple<T, U, V>& t) { is >> get<0>(t) >> get<1>(t) >> get<2>(t); return
    is; }
template <class T, class U, class V> inline ostream& operator<< (ostream& os, const tuple<T, U, V>& t) { os << "(" << get<0>(t) << "," << get<1>(t)
    << "," << get<2>(t) << ")"; return os; }
template <class T, class U, class V, class W> inline istream& operator>> (istream& is, tuple<T, U, V, W>& t) { is >> get<0>(t) >> get<1>(t) >> get<2
    >(t) >> get<3>(t); return is; }
template <class T, class U, class V, class W> inline ostream& operator<< (ostream& os, const tuple<T, U, V, W>& t) { os << "(" << get<0>(t) << "," <<
    get<1>(t) << "," << get<2>(t) << "," << get<3>(t) << ")"; return os; }
template <class T> inline istream& operator>> (istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline ostream& operator<< (ostream& os, const vector<T>& v) { repe(x, v) os << x << " "; return os; }
template <class T> inline ostream& operator<< (ostream& os, const set<T>& s) { repe(x, s) os << x << " "; return os; }
template <class T> inline ostream& operator<< (ostream& os, const unordered_set<T>& s) { repe(x, s) os << x << " "; return os; }
template <class T, class U> inline ostream& operator<< (ostream& os, const map<T, U>& m) { repe(p, m) os << p << " "; return os; }
template <class T, class U> inline ostream& operator<< (ostream& os, const unordered_map<T, U>& m) { repe(p, m) os << p << " "; return os; }
template <class T> inline ostream& operator<< (ostream& os, stack<T> s) { while (!s.empty()) { os << s.top() << " "; s.pop(); } return os; }
template <class T> inline ostream& operator<< (ostream& os, queue<T> q) { while (!q.empty()) { os << q.front() << " "; q.pop(); } return os; }
template <class T> inline ostream& operator<< (ostream& os, deque<T> q) { while (!q.empty()) { os << q.front() << " "; q.pop_front(); } return os; }
template <class T> inline ostream& operator<< (ostream& os, priority_queue<T> q) { while (!q.empty()) { os << q.top() << " "; q.pop(); } return os; }
// Visual Studio
#ifdef _MSC_VER
#define popcount (int)__popcnt // 1
#define popcountll (int)__popcnt64
inline int lsb(unsigned int n) { unsigned long i; _BitScanForward(&i, n); return i; } // 0-indexed
inline int lsbll(unsigned long long n) { unsigned long i; _BitScanForward64(&i, n); return i; }
inline int msb(unsigned int n) { unsigned long i; _BitScanReverse(&i, n); return i; } // 0-indexed
inline int msbll(unsigned long long n) { unsigned long i; _BitScanReverse64(&i, n); return i; }
template <class T> T gcd(T a, T b) { return b ? gcd(b, a % b) : a; }
#define dump(x) cout << "\033[1;36m" << (x) << "\033[0m" << endl;
#define dumps(x) cout << "\033[1;36m" << (x) << "\033[0m ";
#define dumpel(a) { int i = 0; cout << "\033[1;36m"; repe(x, a) {cout << i++ << ": " << x << endl;} cout << "\033[0m"; }
#define input_from_file(f) ifstream isTMP(f); cin.rdbuf(isTMP.rdbuf());
#define output_to_file(f) ofstream osTMP(f); cout.rdbuf(osTMP.rdbuf());
// gcc
#else
#define popcount (int)__builtin_popcount
#define popcountll (int)__builtin_popcountll
#define lsb __builtin_ctz
#define lsbll __builtin_ctzll
#define msb(n) (31 - __builtin_clz(n))
#define msbll(n) (63 - __builtin_clzll(n))
#define gcd __gcd
#define dump(x)
#define dumps(x)
#define dumpel(v)
#define input_from_file(f)
#define output_to_file(f)
#endif
#endif //
//-----------------AtCoder -----------------
#include <atcoder/all>
using namespace atcoder;
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
template <class S, S(*op)(S, S), S(*e)()>ostream& operator<<(ostream& os, segtree<S, op, e> seg) { int n = seg.max_right(0, [](S x) {return true; });
    rep(i, n) os << seg.get(i) << " "; return os; }
template <class S, S(*op)(S, S), S(*e)(), class F, S(*mp)(F, S), F(*cp)(F, F), F(*id)()>ostream& operator<<(ostream& os, lazy_segtree<S, op, e, F, mp
    , cp, id> seg) { int n = seg.max_right(0, [](S x) {return true; }); rep(i, n) os << seg.get(i) << " "; return os; }
istream& operator>> (istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
ostream& operator<< (ostream& os, const mint& x) { os << x.val(); return os; }
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>;
//----------------------------------------------
//O(|E|)
/*
* n m
*
* n :
* m :
* g :
* directed : true
* one_indexed : 1-indexed true
*/
void read_graph(int n, int m, Graph& g,
bool directed = false, bool one_indexed = true) {
g = Graph(n);
rep(i, m) {
int a, b;
cin >> a >> b;
if (one_indexed) { a--; b--; }
g[a].push_back(b);
if (!directed) g[b].push_back(a);
}
}
//O(|V|)
/*
* g v st
* st i g id[i]
*/
int steiner_tree(const Graph& g, const vi& v, Graph& st, vi& id) {
int n = sz(g);
vb sel(n); // v
repe(s, v) sel[s] = true;
vi deg(n); //
queue<int> q_deg1; // 1
rep(s, n) {
deg[s] = sz(g[s]);
if (!sel[s] && deg[s] == 1) q_deg1.push(s);
}
// 1 v
int m = n;
while (!q_deg1.empty()) {
int s = q_deg1.front();
q_deg1.pop();
deg[s] = -1; // st
m--;
repe(t, g[s]) {
if (deg[t] > 0) deg[t]--;
if (!sel[t] && deg[t] == 1) q_deg1.push(t);
}
}
st.resize(m);
id.resize(m);
vi id_inv(n);
queue<int> q_st;
q_st.push(v[0]);
id[0] = v[0];
id_inv[v[0]] = 0;
int i = 1;
// st
while (!q_st.empty()) {
int s = q_st.front();
q_st.pop();
repe(t, g[s]) {
if (deg[t] >= 0) {
id[i] = t;
id_inv[t] = i;
st[id_inv[s]].push_back(i);
st[i].push_back(id_inv[s]);
q_st.push(t);
i++;
}
}
deg[s] = -2; //
}
return m;
}
//
/*
* g v i v 1 nn[i]
* i nn[i] dist[i] -1, INF
*/
void nearest_neighbor(const Graph& g, const vi& v, vi& nn, vi& dist) {
int n = sz(g);
nn.resize(n, -1);
dist.resize(n, INF);
queue<int> q;
repe(s, v) {
q.push(s);
nn[s] = s;
dist[s] = 0;
}
while (!q.empty()) {
int s = q.front();
q.pop();
repe(t, g[s]) {
if (dist[t] != INF) continue;
dist[t] = dist[s] + 1;
nn[t] = nn[s];
q.push(t);
}
}
}
//O(|V|)
/*
* g i h[i]
*
* h[i] : i
*
* DP
*/
void height_of_undirected_tree(Graph& g, vi& h) {
ll n = sz(g);
// (p, s) s (p, s)
// dp[p * n + s] : (p, s)
unordered_map<ll, int> dp;
// 0 dp[p * n + s]
function<int(int, int)> dfs_to_leaf = [&](int p, int s) {
//
for (auto t : g[s]) {
if (t != p) {
chmax(dp[p * n + s], dfs_to_leaf(s, t) + 1);
}
}
return dp[p * n + s];
};
// 0 dp[s * n + p]
// dp[s * n + s]
function<void(int, int)> dfs_to_root = [&](int p, int s) {
// s
int m = sz(g[s]);
//
vi acc_l(m + 1), acc_r(m + 1);
for (int i = 0; i < m; i++) {
auto t = g[s][i];
acc_l[i + 1] = max(acc_l[i], dp[s * n + t] + 1);
}
for (int i = m - 1; i >= 0; i--) {
auto t = g[s][i];
acc_r[i] = max(acc_r[i + 1], dp[s * n + t] + 1);
}
// 1
rep(i, m) {
int t = g[s][i];
dp[t * n + s] = max(acc_l[i], acc_r[i + 1]);
}
//
dp[s * n + s] = acc_l[m];
//
//
for (auto t : g[s]) {
if (t != p) dfs_to_root(s, t);
}
};
// 0 dp[p * n + s]
// O(|V|)
dfs_to_leaf(0, 0);
// 0 dp[p * n + s]
// dp[s * n + s]
// O(|V|)
dfs_to_root(0, 0);
h.resize(n);
rep(s, n) h[s] = dp[s * n + s];
}
int main() {
cout << fixed << setprecision(15);
input_from_file("input.txt");
output_to_file("output.txt");
int n, k;
cin >> n >> k;
Graph g;
read_graph(n, n - 1, g);
vi d(k);
cin >> d;
rep(i, k) d[i]--;
Graph st; vi id;
int m = steiner_tree(g, d, st, id);
int total_len = 2 * (m - 1);
// dumpel(st);
// dump(id);
vi nn, dist;
nearest_neighbor(g, id, nn, dist);
// dump(nn);
// dump(dist);
vi h;
height_of_undirected_tree(st, h);
// dump(h);
vi res(n, -1);
rep(s, m) {
res[id[s]] = total_len - h[s];
}
// dump(res);
rep(s, n) {
if (res[s] == -1) {
res[s] = dist[s] + res[nn[s]];
}
}
rep(s, n) {
cout << res[s] << endl;
}
}
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