제출 #1074721

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1074721		Unforgettablepl	Beech Tree (IOI23_beechtree)	C++17	26 / 100	2043 ms	19384 KiB

beechtree

#include "beechtree.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> beechtree(int N,int M,vector<int> P,vector<int> C){
    vector<int> ans(N);
    vector<vector<int>> adj(N);
    for(int i=1;i<N;i++)adj[P[i]].emplace_back(i);
    auto check = [&](int root){
        map<int,int> cnt;
        priority_queue<tuple<int,int,int>> q;
        vector<int> seq = {root};
        for(int&i:adj[root])q.emplace(adj[i].size(),0,i);
        while(!q.empty()) {
            auto [a,b,curr] = q.top();q.pop();
            if(seq[cnt[C[curr]]]!=P[curr])return false;
            cnt[C[curr]]++;
            seq.emplace_back(curr);
            for(int&i:adj[curr])q.emplace(adj[i].size(),-(seq.size()-1),i);
        }
        return true;
    };
    for(int i=0;i<N;i++)if(check(i))ans[i]=1;
    return ans;
}

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• Subtask 1: 9 / 9
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• Subtask 3: 9 / 9
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• Subtask 9: 0 / 12