結果

問題 No.1295 木と駒
ユーザー heno239heno239
提出日時 2020-11-22 13:39:09
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
実行時間 -
コード長 5,518 bytes
コンパイル時間 2,086 ms
コンパイル使用メモリ 139,404 KB
実行使用メモリ 74,184 KB
最終ジャッジ日時 2024-07-23 16:27:54
合計ジャッジ時間 10,420 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
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 * 1
other AC * 20 WA * 28
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#pragma GCC optimize("Ofast")
#pragma GCC target ("sse4")
#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
#include<array>
using namespace std;
//#define int long long
typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
constexpr ll mod = 998244353;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acosl(-1.0);
ll mod_pow(ll x, ll n, ll m = mod) {
ll res = 1;
while (n) {
if (n & 1)res = res * x % m;
x = x * x % m; n >>= 1;
}
return res;
}
struct modint {
ll n;
modint() :n(0) { ; }
modint(ll m) :n(m) {
if (n >= mod)n %= mod;
else if (n < 0)n = (n % mod + mod) % mod;
}
operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
if (n == 0)return modint(1);
modint res = (a * a) ^ (n / 2);
if (n % 2)res = res * a;
return res;
}
ll inv(ll a, ll p) {
return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }
const int max_n = 1 << 18;
modint fact[max_n], factinv[max_n];
void init_f() {
fact[0] = modint(1);
for (int i = 0; i < max_n - 1; i++) {
fact[i + 1] = fact[i] * modint(i + 1);
}
factinv[max_n - 1] = modint(1) / fact[max_n - 1];
for (int i = max_n - 2; i >= 0; i--) {
factinv[i] = factinv[i + 1] * modint(i + 1);
}
}
modint comb(int a, int b) {
if (a < 0 || b < 0 || a < b)return 0;
return fact[a] * factinv[b] * factinv[a - b];
}
const int mn = 1 << 18;
struct edge {
int to;
};
//can,canrev
using Data = pair<bool,bool>;
vector<edge> G[mn];
int mi[mn];
vector<int> ids[mn];
vector<Data> memo[mn];
int root;
Data dfs(int id, int fr) {
Data res;
vector<pair<bool, bool>> vb;
for (edge e : G[id]) {
if (e.to == fr)continue;
Data nex = dfs(e.to, id);
if (mi[e.to] != id) {
nex.second = false;
}
//cout << "? " << e.to << " " << id << " " << nex.first << " " << nex.second << "\n";
vb.push_back(nex);
ids[id].push_back(e.to);
memo[id].push_back(nex);
}
//
//update for return
res.second = true;
rep(j, ids[id].size()) {
if (!vb[j].second)res.second = false;
}
res.first = true;
int ma = 0;
rep(j, ids[id].size())ma = max(ma, ids[id][j]);
rep(j, ids[id].size()) {
if (ids[id][j] == ma) {
if (!vb[j].first)res.first = false;
}
else {
if (!vb[j].second)res.first = false;
}
}
//
return res;
}
bool ans[mn];
void invdfs(int id, int fr, Data pre) {
if (fr >= 0) {
//cout << id << " " << fr << " " << pre.first << " " << pre.second << "\n";
}
vector<Data> v;
vector<int> vid;
rep(j, memo[id].size()) {
v.push_back(memo[id][j]);
vid.push_back(ids[id][j]);
}
if (fr >= 0) {
v.push_back(pre);
vid.push_back(fr);
}
int len = v.size();
//
//calcurate id's ans
int ma = 0;
for (int to : vid)ma = max(ma, to);
ans[id] = true;
rep(j, vid.size()) {
if (vid[j] == ma) {
if (!v[j].first)ans[id] = false;
}
else {
if (!v[j].second)ans[id] = false;
}
}
set<pair<int, Data>> st;
int c0 = 0, c1 = 0;
rep(j, v.size()) {
st.insert({ vid[j],v[j] });
if (v[j].first)c0++;
if (v[j].second)c1++;
}
rep(i, ids[id].size()) {
int to = ids[id][i];
st.erase({ vid[i],v[i] });
if (v[i].first)c0--;
if (v[i].second)c1--;
Data d = { true,true };
if (c1 != (int)v.size() - 1)d.second = false;
if (to != mi[id])d.second = false;
if (st.size()) {
pair<int, Data>las = *--st.end();
int z = c1; if (las.second.second)z--;
if (!las.second.first)d.first = false;
if (z != (int)v.size() - 2)d.first = false;
}
else {
d.first = true;
}
invdfs(to, id, d);
st.insert({ vid[i],v[i] });
if (v[i].first)c0++;
if (v[i].second)c1++;
}
}
void yaru() {
dfs(root, -1);
invdfs(root, -1, {true,true});
}
void solve() {
int n; cin >> n;
rep(i, n)mi[i] = mod;
rep(i, n - 1) {
int a, b; cin >> a >> b; a--; b--;
G[a].push_back({ b });
G[b].push_back({ a });
mi[a] = min(mi[a], b);
mi[b] = min(mi[b], a);
}
yaru();
rep(i, n) {
if (ans[i])cout << "Yes\n";
else cout << "No\n";
}
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
//cout << fixed << setprecision(15);
//init_f();
//init();
//expr();
//int t; cin >> t; rep(i, t)
solve();
return 0;
}
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