/ SeriousOJ /

Record Detail

Time Exceeded


  
# Status Time Cost Memory Cost
#1 Accepted 1ms 532.0 KiB
#2 Accepted 1ms 532.0 KiB
#3 Accepted 64ms 576.0 KiB
#4 Accepted 64ms 596.0 KiB
#5 Accepted 109ms 788.0 KiB
#6 Accepted 165ms 1.047 MiB
#7 Accepted 145ms 868.0 KiB
#8 Accepted 279ms 3.555 MiB
#9 Accepted 293ms 3.594 MiB
#10 Accepted 312ms 4.988 MiB
#11 Time Exceeded ≥2098ms ≥12.121 MiB
#12 Time Exceeded ≥2102ms ≥29.316 MiB

Code

#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>

using namespace std;

// #include "debug.h"

void solve() {
        int n;
        cin >> n;

        vector<int> a(n);
        for (int i = 0; i < n; ++i) {
                cin >> a[i];
        }

        vector<vector<int>> g(n);
        for (int i = 0; i < n - 1; ++i) {
                int u, v;
                cin >> u >> v;
                --u, --v;

                g[u].push_back(v), g[v].push_back(u);
        }

        vector<vector<int>> sub(n);
        vector<int> sz(n, 1);

        auto merge = [&](vector<int> &u, vector<int> &v) {
                if (v.size() > u.size()) {
                        u.swap(v);
                }

                for (int i : v) {
                        u.push_back(i);
                }
        };

        vector<int> ans(n);
        auto go = [&](auto &&go, int u, int v) -> void {
                sub[u].push_back(a[u]);

                for (int c : g[u]) {
                        if (c == v) {
                                continue;
                        }

                        go(go, c, u);

                        sz[u] += sz[c];
                        merge(sub[u], sub[c]);
                }

                sort(sub[u].begin(), sub[u].end());

                int cnt = 0;
                vector<int> nsub;
                for (int i : sub[u]) {
                        if (nsub.empty() || nsub.back() != i) {
                                cnt += (i <= sz[u]);
                                nsub.push_back(i);
                        }
                }
                sub[u].swap(nsub);

                ans[u] = sz[u] - cnt;
        };
        go(go, 0, 0);

        int q;
        cin >> q;
        for (int i = 0; i < q; ++i) {
                int x;
                cin >> x;
                cout << ans[x - 1] << '\n';
        }
}

int32_t main() {
        ios_base::sync_with_stdio(false);
        cin.tie(0);

        int tc = 1;
        cin >> tc;

        while (tc--) {
                solve();
        }
}

Information

Submit By
Type
Submission
Problem
P1157 Roy and Tree Permutation
Contest
Happy New Year 2025
Language
C++17 (G++ 13.2.0)
Submit At
2025-01-02 16:05:37
Judged At
2025-01-02 16:05:37
Judged By
Score
50
Total Time
≥2102ms
Peak Memory
≥29.316 MiB