제출 #1226616

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1226616		kokoxuya	Magic Tree (CEOI19_magictree)	C++20	55 / 100	142 ms	27960 KiB

magictree

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define ss second
#define ff first
#define piii pair<int,pii>
#define debu(x) (cerr << #x  << " = "<< x << "\n")
#define debu2(x,y) (cerr << #x  << " = "<< x << " " << #y << " = " << y << "\n")
#define debu3(x,y,z) (cerr << #x  << " = "<< x << " " << #y << " = " << y << " " << #z << " = " << z<< "\n")
#define bitout(x,y) {\
	cerr << #x << " : ";\
	for (int justforbits = y; justforbits >=0; justforbits--)cout << (((1 << justforbits) & x)>=1);\
	cout << "\n";\
}
#define rangeout(j,rangestart,rangeend) {\
	cerr << "outputting" << #j<< ":\n";\
	for (int forrang = rangestart; forrang <= rangeend; forrang++)cerr << j[forrang] << " ";\
	cerr<<"\n";\
}
#define c1 {cerr << "Checkpoint 1! \n\n";cerr.flush();}
#define c2 {cerr << "Checkpoint 2! \n\n";cerr.flush();}
#define c3 {cerr << "Checkpoint 3! \n\n";cerr.flush();}
#define c4 {cerr << "Checkpoint 4! \n\n";cerr.flush();}
#define defN 100001

vector<multiset<int>>thesets(defN);
vector<vector<int>>childlist(defN);
vector<int>myval(defN);

int dfs(int cn)
{
	//debu(cn);
	int retno=cn;
	for(int child:childlist[cn])
	{
		int x=dfs(child);
		if(thesets[x].size()<=thesets[retno].size())
		{
			for(auto num=thesets[x].begin();num!=thesets[x].end();num++)
			{
				thesets[retno].insert(*num);
			}
		}
		else
		{
			for(auto num=thesets[retno].begin();num!=thesets[retno].end();num++)
			{
				thesets[x].insert(*num);
			}
			retno=x;
		}
	}
	
	if(myval[cn]!=0)
	{
		int curr=myval[cn];
		if(thesets[retno].empty()||*prev(thesets[retno].end())<=curr)
		{
			thesets[retno].insert(curr);
		}
		else
		{
			thesets[retno].erase(thesets[retno].upper_bound(curr));
			thesets[retno].insert(curr);
		}
	}
	//debu(cn);
	return retno;
}


signed main()
{
    int t1,t2,t3,t4;
    mt19937_64 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
    //ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n,m,k;cin>>n>>m>>k;
	for(int a=2;a<=n;a++)
	{
		cin>>t1;
		childlist[t1].pb(a);
	}
	
	for(int a=1;a<=m;a++)
	{
		cin>>t1>>t2>>t3;
		myval[t1]=t2;
	}

	int ans=dfs(1);
	cout<<thesets[ans].size();
}	

• Subtask 1: 6 / 6
• Subtask 2: 0 / 3
• Subtask 3: 11 / 11
• Subtask 4: 0 / 12
• Subtask 5: 16 / 16
• Subtask 6: 0 / 13
• Subtask 7: 22 / 22
• Subtask 8: 0 / 17