답안 #1032007

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1032007	2024-07-23T09:52:45 Z	ten_xd	Cat Exercise (JOI23_ho_t4)	C++17	54 / 100	2000 ms	47440 KB

Main

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define rep(a,b) for(int a = 0; a < (b); ++a)
#define all(t) t.begin(), t.end()
#define pb push_back

const int N = 5e5+5, INF = 2e9+54321;
const ll INF_L = (ll)2e18+54321;

struct Node
{
	int v, val;
	bool operator < (const Node &node) const
	{
		return val < node.val;
	}
};

int n,cnt,base,rozmiar_drzewa;
int A[N];
vector<int> G[N];
bool vis[N];
int pre[N];
int siz[N];
int P[N];
int deg[N];
vector<Node> tree;

void DFS(int v, int par)
{
	//cout << "K: " << v << '\n';
	siz[v] = 1, pre[v] = ++cnt, P[v] = par, tree[cnt+base] = {v,A[v]};
	for(auto x : G[v])
	{
		if(x == par) continue;
		deg[x] = deg[v] + 1, DFS(x,v), siz[v] += siz[x];
	}
}

Node query(int l, int p)
{
	l = l + base - 1, p = p + base + 1;
	Node res = {-1,-1};
	while(l/2 != p/2)
	{
		if(l % 2 == 0) res = max(res,tree[l+1]);
		if(p % 2 == 1) res = max(res,tree[p-1]);
		l /= 2, p /= 2;
	}
	return res;
}

void update(int v, Node val)
{
	v += base, tree[v] = val, v /= 2;
	while(v > 0) tree[v] = max(tree[v*2],tree[v*2+1]), v /= 2;
}

int odl(int a, int b)
{
	int res = 0;
	while(a != b)
	{
		++res;
		if(deg[a] > deg[b]) a = P[a];
		else b = P[b];
	}
	return res;
}

//int cm= 0;
ll DFS2(int v, int b)
{
	//++cm;
	//if(cm >= 8) return 0;
	//cout << "V: " << v << " B: " << b << '\n';
	vis[v] = 1;
	ll val = 0;
	update(pre[v],{-1,-1});
	for(auto x : G[v])
	{
		if(vis[x]) continue;
		if(deg[x] > deg[v])
		{
			Node akt = query(pre[x],pre[x]+siz[x]-1);
			//cout << "VV: " << v << " XX: " << x << " AKT V: " << akt.v << " AKT VAL: " << akt.val << '\n';
			val = max(val,(ll)odl(v,akt.v)+DFS2(akt.v,x));
		}
	}
	if(v != b)
	{
		Node akt = query(pre[b],pre[b]+siz[b]-1);
		//cout << "VVVVV: " << v << " AKT V: " << akt.v << " AKT VAL: " << akt.val << '\n';
		val = max(val,(ll)odl(v,akt.v)+DFS2(akt.v,b));
	}
	return val;
}

void solve()
{
	cin >> n;
	for(int i = 1; i <= n; ++i) cin >> A[i];
	rep(i,n-1)
	{
		int a,b;
		cin >> a >> b;
		G[a].pb(b), G[b].pb(a);
	}

	base = 1;
	while(base <= n+5) base *= 2;
	rozmiar_drzewa = base * 2;
	tree.assign(rozmiar_drzewa,{-1,-1});

	deg[1] = 1, DFS(1,0);
	for(int i = base-1; i >= 1; --i) tree[i] = max(tree[i*2],tree[i*2+1]);

	int wie = 1;
	for(int i = 1; i <= n; ++i) if(A[i] == n) wie = i;
	cout << DFS2(wie,1) << '\n';
}

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

	int T = 1;
	//cin >> T;
	while(T--) solve();

	return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct
11	Correct	3 ms	18780 KB	Output is correct
12	Correct	3 ms	18780 KB	Output is correct
13	Correct	3 ms	16728 KB	Output is correct
14	Correct	2 ms	16732 KB	Output is correct
15	Correct	3 ms	16728 KB	Output is correct
16	Correct	3 ms	18776 KB	Output is correct
17	Correct	4 ms	16728 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct
11	Correct	3 ms	18780 KB	Output is correct
12	Correct	3 ms	18780 KB	Output is correct
13	Correct	3 ms	16728 KB	Output is correct
14	Correct	2 ms	16732 KB	Output is correct
15	Correct	3 ms	16728 KB	Output is correct
16	Correct	3 ms	18776 KB	Output is correct
17	Correct	4 ms	16728 KB	Output is correct
18	Correct	30 ms	17704 KB	Output is correct
19	Correct	17 ms	17716 KB	Output is correct
20	Correct	18 ms	15072 KB	Output is correct
21	Correct	5 ms	15196 KB	Output is correct
22	Correct	4 ms	14940 KB	Output is correct
23	Correct	5 ms	14940 KB	Output is correct
24	Correct	4 ms	14936 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct
11	Correct	3 ms	18780 KB	Output is correct
12	Correct	3 ms	18780 KB	Output is correct
13	Correct	3 ms	16728 KB	Output is correct
14	Correct	2 ms	16732 KB	Output is correct
15	Correct	3 ms	16728 KB	Output is correct
16	Correct	3 ms	18776 KB	Output is correct
17	Correct	4 ms	16728 KB	Output is correct
18	Correct	30 ms	17704 KB	Output is correct
19	Correct	17 ms	17716 KB	Output is correct
20	Correct	18 ms	15072 KB	Output is correct
21	Correct	5 ms	15196 KB	Output is correct
22	Correct	4 ms	14940 KB	Output is correct
23	Correct	5 ms	14940 KB	Output is correct
24	Correct	4 ms	14936 KB	Output is correct
25	Correct	3 ms	14172 KB	Output is correct
26	Correct	12 ms	14896 KB	Output is correct
27	Correct	14 ms	14940 KB	Output is correct
28	Correct	11 ms	14936 KB	Output is correct
29	Correct	12 ms	14940 KB	Output is correct
30	Correct	5 ms	14652 KB	Output is correct
31	Correct	5 ms	14680 KB	Output is correct
32	Correct	6 ms	14680 KB	Output is correct
33	Correct	5 ms	14524 KB	Output is correct

Subtask #5
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct
11	Correct	3 ms	18780 KB	Output is correct
12	Correct	3 ms	18780 KB	Output is correct
13	Correct	3 ms	16728 KB	Output is correct
14	Correct	2 ms	16732 KB	Output is correct
15	Correct	3 ms	16728 KB	Output is correct
16	Correct	3 ms	18776 KB	Output is correct
17	Correct	4 ms	16728 KB	Output is correct
18	Correct	30 ms	17704 KB	Output is correct
19	Correct	17 ms	17716 KB	Output is correct
20	Correct	18 ms	15072 KB	Output is correct
21	Correct	5 ms	15196 KB	Output is correct
22	Correct	4 ms	14940 KB	Output is correct
23	Correct	5 ms	14940 KB	Output is correct
24	Correct	4 ms	14936 KB	Output is correct
25	Execution timed out	2029 ms	47440 KB	Time limit exceeded
26	Halted	0 ms	0 KB	-

Subtask #6
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	14424 KB	Output is correct
2	Correct	3 ms	14172 KB	Output is correct
3	Correct	96 ms	33104 KB	Output is correct
4	Correct	75 ms	33616 KB	Output is correct
5	Correct	76 ms	33104 KB	Output is correct

Subtask #7
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	16732 KB	Output is correct
2	Correct	2 ms	16732 KB	Output is correct
3	Correct	3 ms	16728 KB	Output is correct
4	Correct	2 ms	16732 KB	Output is correct
5	Correct	3 ms	16732 KB	Output is correct
6	Correct	2 ms	16732 KB	Output is correct
7	Correct	2 ms	18780 KB	Output is correct
8	Correct	2 ms	16732 KB	Output is correct
9	Correct	2 ms	16732 KB	Output is correct
10	Correct	4 ms	16732 KB	Output is correct
11	Correct	3 ms	18780 KB	Output is correct
12	Correct	3 ms	18780 KB	Output is correct
13	Correct	3 ms	16728 KB	Output is correct
14	Correct	2 ms	16732 KB	Output is correct
15	Correct	3 ms	16728 KB	Output is correct
16	Correct	3 ms	18776 KB	Output is correct
17	Correct	4 ms	16728 KB	Output is correct
18	Correct	30 ms	17704 KB	Output is correct
19	Correct	17 ms	17716 KB	Output is correct
20	Correct	18 ms	15072 KB	Output is correct
21	Correct	5 ms	15196 KB	Output is correct
22	Correct	4 ms	14940 KB	Output is correct
23	Correct	5 ms	14940 KB	Output is correct
24	Correct	4 ms	14936 KB	Output is correct
25	Correct	3 ms	14172 KB	Output is correct
26	Correct	12 ms	14896 KB	Output is correct
27	Correct	14 ms	14940 KB	Output is correct
28	Correct	11 ms	14936 KB	Output is correct
29	Correct	12 ms	14940 KB	Output is correct
30	Correct	5 ms	14652 KB	Output is correct
31	Correct	5 ms	14680 KB	Output is correct
32	Correct	6 ms	14680 KB	Output is correct
33	Correct	5 ms	14524 KB	Output is correct
34	Execution timed out	2029 ms	47440 KB	Time limit exceeded
35	Halted	0 ms	0 KB	-

답안 #1032007

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 7.0 / 7.0

Subtask #3 7.0 / 7.0

Subtask #4 10.0 / 10.0

Subtask #5 0 / 20.0

Subtask #6 23.0 / 23.0

Subtask #7 0 / 26.0

Subtask #1
7.0 / 7.0

Subtask #2
7.0 / 7.0

Subtask #3
7.0 / 7.0

Subtask #4
10.0 / 10.0

Subtask #5
0 / 20.0

Subtask #6
23.0 / 23.0

Subtask #7
0 / 26.0