제출 #1242382

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1242382		urosk	참나무 (IOI23_beechtree)	C++20	5 / 100	49 ms	17480 KiB

beechtree

#include "beechtree.h"
#include "bits/stdc++.h"
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
using namespace std;

using ll = int;
using pll = pair<ll,ll>;

const ll maxn = 200005;
ll n,m;
vector<pll> g[maxn];
bool ok[maxn];
vector<int> ans;
pll up[maxn];
std::vector<int> beechtree(int N, int M, std::vector<int> P, std::vector<int> C)
{
    n = N,m = M;
    for(ll i = 2;i<=n;i++){
        ll par = P[i-1]+1;
        g[par].pb({i,C[i-1]});
        up[i] = {par,C[i-1]};
    }
    ans.resize(n);
    ans[n-1] = 1;
    ll c = up[n].sc;
    for(ll i = n;i>=2;i--){
        if(up[i].sc!=c) break;
        ans[i-2] = 1;
    }
    return ans;
}

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