oj.uz

Submission #889779

# Submission time Handle Problem Language Result Execution time Memory
889779 2023-12-20T07:09:12 Z vjudge1 Tourism (JOI23_tourism) C++17
12 / 100
 5000 ms 15648 KB 
#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops")

using namespace __gnu_pbds;
using namespace std;

#define int long long
#define pb push_back

const int N = 1e5 + 1,INF = 1e18;

vector<int> c1(N),c2(N);
vector<int> g[N];
pair<int,int> t[N * 4];
 
void build(int tl,int tr,int v){
	if(tl == tr){
		t[v].first = c1[tl];
		t[v].second = c1[tl];
		return;
	}
	int tm = (tl + tr) >> 1;
	build(tl,tm,v * 2);
	build(tm + 1,tr,v * 2 + 1);
	t[v].first = max(t[v * 2].first,t[v * 2 + 1].first);
	t[v].second = min(t[v * 2].second,t[v * 2 + 1].second);
}
 
pair<int,int> get(int l,int r,int v,int tl,int tr){
	if(tl > r || tr < l){
		return {-INF,INF};
	}
	if(l <= tl && tr <= r){
		return t[v];
	}
	int tm = (tl + tr) >> 1;
	pair<int,int> x,y;
	x = get(l, r, v * 2,tl,tm);
	y = get(l,r,v * 2 + 1,tm + 1,tr);
	pair<int,int> res;
	res.first = max(x.first,y.first);
	res.second = min(x.second,y.second);
	return res;
}
 
void solve(){
	
	int n,q,m;
	cin >> n >> m >> q;
	
	for(int i = 0;i < n - 1;i++){
		int a,b;
		cin>>a>>b;
		g[a].pb(b);
		g[b].pb(a);
	}
	
	for(int i = 1;i <= m;i++){
		int a;
		cin>>a;
		c1[i] = a;
		c2[a] = i;
	}
	if(n <= 2000){
		while(q--){
			int l,r;
			cin >> l >> r;
			vector<int> dis(n + 1);
			queue<pair<int,int>> q;
			q.push({c1[l],-1});
			dis[c1[l]] = 1;
			vector<int> pr(n + 1);
			while(!q.empty()){
				auto [v,p] = q.front();
				q.pop();
				
				for(auto u : g[v]){
					if(u != p){
						dis[u] = dis[v] + 1;
						pr[u] = v;
						q.push({u,v});
					}
				}
			}
			vector<int> ans(n + 1);
			for(int i = l + 1;i <= r;i++){
				int y = c1[i];
				while(y != c1[l]){
					ans[y] = 1;
					y = pr[y];
				}
			}
			int cnt = 0;
			for(int i = 1;i <= n;i++){
				cnt += ans[i];
			}
			cout<<cnt + 1<<"\n";
			
			
		}
	
	}
	else{
		build(1,m,1);
		while(q--){
			int l,r;
			cin >> l >> r;
			auto [ans1,ans2] = get(l,r,1,1,m);
			cout << ans1 - ans2 + 1 << "\n";
		}
	}
 
}
 
signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	cout.tie(NULL);
	int t = 1;
//	cin >> t;
	while(t--){
		solve();
	}
 
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6236 KB Output is correct
2 Correct 1 ms 6236 KB Output is correct
3 Correct 1 ms 6236 KB Output is correct
4 Correct 2 ms 6236 KB Output is correct
5 Correct 2 ms 6236 KB Output is correct
6 Correct 2 ms 6236 KB Output is correct
7 Correct 2 ms 6236 KB Output is correct
8 Correct 2 ms 6236 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 3 ms 6380 KB Output is correct
11 Correct 3 ms 6236 KB Output is correct
12 Correct 4 ms 6236 KB Output is correct
13 Correct 4 ms 6236 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 7 ms 6236 KB Output is correct
16 Correct 7 ms 6400 KB Output is correct
17 Correct 8 ms 6396 KB Output is correct
18 Correct 5 ms 6236 KB Output is correct
19 Correct 6 ms 6400 KB Output is correct
20 Correct 6 ms 6232 KB Output is correct
21 Correct 2 ms 6236 KB Output is correct
22 Correct 2 ms 6236 KB Output is correct
23 Correct 2 ms 6236 KB Output is correct
24 Correct 2 ms 6236 KB Output is correct
25 Correct 3 ms 6236 KB Output is correct
26 Correct 3 ms 6232 KB Output is correct
27 Correct 2 ms 6232 KB Output is correct
28 Correct 2 ms 6392 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6236 KB Output is correct
2 Correct 1 ms 6236 KB Output is correct
3 Correct 1 ms 6236 KB Output is correct
4 Correct 2 ms 6236 KB Output is correct
5 Correct 2 ms 6236 KB Output is correct
6 Correct 2 ms 6236 KB Output is correct
7 Correct 2 ms 6236 KB Output is correct
8 Correct 2 ms 6236 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 3 ms 6380 KB Output is correct
11 Correct 3 ms 6236 KB Output is correct
12 Correct 4 ms 6236 KB Output is correct
13 Correct 4 ms 6236 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 7 ms 6236 KB Output is correct
16 Correct 7 ms 6400 KB Output is correct
17 Correct 8 ms 6396 KB Output is correct
18 Correct 5 ms 6236 KB Output is correct
19 Correct 6 ms 6400 KB Output is correct
20 Correct 6 ms 6232 KB Output is correct
21 Correct 2 ms 6236 KB Output is correct
22 Correct 2 ms 6236 KB Output is correct
23 Correct 2 ms 6236 KB Output is correct
24 Correct 2 ms 6236 KB Output is correct
25 Correct 3 ms 6236 KB Output is correct
26 Correct 3 ms 6232 KB Output is correct
27 Correct 2 ms 6232 KB Output is correct
28 Correct 2 ms 6392 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct
30 Correct 41 ms 6236 KB Output is correct
31 Correct 54 ms 6232 KB Output is correct
32 Correct 84 ms 6488 KB Output is correct
33 Correct 87 ms 6492 KB Output is correct
34 Correct 83 ms 6492 KB Output is correct
35 Correct 160 ms 6492 KB Output is correct
36 Correct 157 ms 6492 KB Output is correct
37 Correct 159 ms 6488 KB Output is correct
38 Correct 1412 ms 6720 KB Output is correct
39 Correct 1429 ms 6732 KB Output is correct
40 Correct 1411 ms 6492 KB Output is correct
41 Correct 4367 ms 6724 KB Output is correct
42 Correct 3952 ms 6488 KB Output is correct
43 Execution timed out 5010 ms 6492 KB Time limit exceeded
44 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6232 KB Output is correct
2 Correct 2 ms 6236 KB Output is correct
3 Correct 3 ms 6236 KB Output is correct
4 Correct 50 ms 12936 KB Output is correct
5 Correct 48 ms 12368 KB Output is correct
6 Correct 50 ms 14672 KB Output is correct
7 Correct 113 ms 15444 KB Output is correct
8 Correct 68 ms 15444 KB Output is correct
9 Correct 78 ms 15444 KB Output is correct
10 Correct 75 ms 15648 KB Output is correct
11 Correct 79 ms 15476 KB Output is correct
12 Correct 61 ms 15632 KB Output is correct
13 Correct 63 ms 15616 KB Output is correct
14 Correct 61 ms 15552 KB Output is correct
15 Correct 41 ms 10580 KB Output is correct
16 Correct 58 ms 15088 KB Output is correct
17 Correct 2234 ms 7300 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6236 KB Output is correct
2 Incorrect 21 ms 10588 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6232 KB Output is correct
2 Correct 2 ms 6236 KB Output is correct
3 Correct 3 ms 6236 KB Output is correct
4 Incorrect 59 ms 13296 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6236 KB Output is correct
2 Correct 1 ms 6236 KB Output is correct
3 Correct 1 ms 6236 KB Output is correct
4 Correct 2 ms 6236 KB Output is correct
5 Correct 2 ms 6236 KB Output is correct
6 Correct 2 ms 6236 KB Output is correct
7 Correct 2 ms 6236 KB Output is correct
8 Correct 2 ms 6236 KB Output is correct
9 Correct 3 ms 6236 KB Output is correct
10 Correct 3 ms 6380 KB Output is correct
11 Correct 3 ms 6236 KB Output is correct
12 Correct 4 ms 6236 KB Output is correct
13 Correct 4 ms 6236 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 7 ms 6236 KB Output is correct
16 Correct 7 ms 6400 KB Output is correct
17 Correct 8 ms 6396 KB Output is correct
18 Correct 5 ms 6236 KB Output is correct
19 Correct 6 ms 6400 KB Output is correct
20 Correct 6 ms 6232 KB Output is correct
21 Correct 2 ms 6236 KB Output is correct
22 Correct 2 ms 6236 KB Output is correct
23 Correct 2 ms 6236 KB Output is correct
24 Correct 2 ms 6236 KB Output is correct
25 Correct 3 ms 6236 KB Output is correct
26 Correct 3 ms 6232 KB Output is correct
27 Correct 2 ms 6232 KB Output is correct
28 Correct 2 ms 6392 KB Output is correct
29 Correct 2 ms 6236 KB Output is correct
30 Correct 41 ms 6236 KB Output is correct
31 Correct 54 ms 6232 KB Output is correct
32 Correct 84 ms 6488 KB Output is correct
33 Correct 87 ms 6492 KB Output is correct
34 Correct 83 ms 6492 KB Output is correct
35 Correct 160 ms 6492 KB Output is correct
36 Correct 157 ms 6492 KB Output is correct
37 Correct 159 ms 6488 KB Output is correct
38 Correct 1412 ms 6720 KB Output is correct
39 Correct 1429 ms 6732 KB Output is correct
40 Correct 1411 ms 6492 KB Output is correct
41 Correct 4367 ms 6724 KB Output is correct
42 Correct 3952 ms 6488 KB Output is correct
43 Execution timed out 5010 ms 6492 KB Time limit exceeded
44 Halted 0 ms 0 KB -