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Submission #412755

# Submission time Handle Problem Language Result Execution time Memory
412755 2021-05-27T13:00:47 Z amoo_safar Long Mansion (JOI17_long_mansion) C++17
100 / 100
 1760 ms 144640 KB 
// vaziat meshki-ghermeze !
#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'

using namespace std;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef pair<ll, ll> pll;

const ll Mod = 1000000007LL;
const int N = 5e5 + 10;
const ll Inf = 2242545357980376863LL;
const int Log = 20;

int n;
int L[Log][N], R[Log][N];
int C[N];

vector<int> B[N];

int vis[N];

typedef pair<int, int> pii;
map<pii, pii> mp;

pii Solve(pii A){
	// cerr << "^ " << A.F << ' ' << A.S << '\n';
	if(mp.count(A))
		return mp[A];
	int l = A.F, r = A.S;
	
	for(int lg = Log - 1; lg >= 0; lg --){
		if(l <= L[lg][r + 1])
			r += (1 << lg);
	}
	for(int lg = Log - 1; lg >= 0; lg --){
		if(l <= (1 << lg)) continue;
		if(R[lg][l - (1 << lg)] <= r)
			l -= (1 << lg);
	}
	if(r == n)
		return mp[A] = {l, r};
	int mt = L[0][r + 1];
	if(mt < l)
		return mp[A] = {l, r};
	l = mt;
	r ++;
	// cerr << "# " << l << ", " << r << '\n';
	return mp[A] = Solve({l, r});
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n;
	for(int i = 1; i < n; i++) cin >> C[i];
	for(int i = 1; i <= n; i++){
		int sz;
		cin >> sz;
		int v;
		for(int j = 0; j < sz; j++){
			cin >> v;
			B[i].pb(v);
		}
	}

	// cerr << "! ";
	for(int i = 1; i <= n; i++){
		L[0][i] = vis[C[i - 1]];
		for(auto x : B[i])
			vis[x] = i;
		// cerr << L[0][i] << ' ';
	}
	L[0][n + 1] = 0;
	// cerr << '\n';
	
	fill(vis, vis + N, n + 1);
	// cerr << "# ";
	for(int i = n; i >= 1; i--){
		R[0][i] = vis[C[i]];
		for(auto x : B[i])
			vis[x] = i;
		// cerr << R[0][i] << ' ';
	}
	R[0][0] = n + 1;

	// cerr << '\n';
	for(int l = 1; l < Log; l++){
		for(int i = 1; i <= n + 1; i++){
			L[l][i] = L[l - 1][i];
			if(i + (1 << (l - 1)) <= n + 1)
				L[l][i] = min(L[l][i], L[l - 1][i + (1 << (l - 1))]);
		}
	}

	for(int l = 1; l < Log; l++){
		for(int i = 0; i <= n; i++){
			R[l][i] = R[l - 1][i];
			if(i + (1 << (l - 1)) <= n)
				R[l][i] = max(R[l][i], R[l - 1][i + (1 << (l - 1))]);
		}
	}

	// auto [l,r] = Solve({3, 3});
	// cerr << "!!! [" << l << ", " << r << "]\n";
	// exit(0);
	int q;
	cin >> q;
	int x, y;

	for(int i = 0; i < q; i++){
		cin >> x >> y;
		auto [l, r] = Solve({x, x});
		// debug(l);
		// debug(r);
		cout << (l <= y && y <= r ? "YES" : "NO") << '\n';
	}
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14792 KB Output is correct
2 Correct 13 ms 15052 KB Output is correct
3 Correct 15 ms 15496 KB Output is correct
4 Correct 14 ms 14684 KB Output is correct
5 Correct 13 ms 14768 KB Output is correct
6 Correct 12 ms 14796 KB Output is correct
7 Correct 13 ms 14912 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14792 KB Output is correct
2 Correct 13 ms 15052 KB Output is correct
3 Correct 15 ms 15496 KB Output is correct
4 Correct 14 ms 14684 KB Output is correct
5 Correct 13 ms 14768 KB Output is correct
6 Correct 12 ms 14796 KB Output is correct
7 Correct 13 ms 14912 KB Output is correct
8 Correct 227 ms 16356 KB Output is correct
9 Correct 224 ms 16480 KB Output is correct
10 Correct 236 ms 16736 KB Output is correct
11 Correct 252 ms 17408 KB Output is correct
12 Correct 202 ms 16448 KB Output is correct
13 Correct 192 ms 16544 KB Output is correct
14 Correct 193 ms 16560 KB Output is correct
15 Correct 192 ms 16592 KB Output is correct
16 Correct 209 ms 16820 KB Output is correct
17 Correct 210 ms 16548 KB Output is correct
18 Correct 198 ms 16556 KB Output is correct
19 Correct 191 ms 16660 KB Output is correct
20 Correct 237 ms 16640 KB Output is correct
21 Correct 211 ms 16820 KB Output is correct
22 Correct 195 ms 16604 KB Output is correct
23 Correct 253 ms 16468 KB Output is correct
24 Correct 224 ms 16580 KB Output is correct
25 Correct 260 ms 16496 KB Output is correct
26 Correct 229 ms 16456 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 751 ms 42632 KB Output is correct
2 Correct 709 ms 43024 KB Output is correct
3 Correct 712 ms 43304 KB Output is correct
4 Correct 746 ms 42820 KB Output is correct
5 Correct 745 ms 42952 KB Output is correct
6 Correct 527 ms 41096 KB Output is correct
7 Correct 479 ms 41352 KB Output is correct
8 Correct 497 ms 41276 KB Output is correct
9 Correct 488 ms 41352 KB Output is correct
10 Correct 448 ms 41260 KB Output is correct
11 Correct 464 ms 41328 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14792 KB Output is correct
2 Correct 13 ms 15052 KB Output is correct
3 Correct 15 ms 15496 KB Output is correct
4 Correct 14 ms 14684 KB Output is correct
5 Correct 13 ms 14768 KB Output is correct
6 Correct 12 ms 14796 KB Output is correct
7 Correct 13 ms 14912 KB Output is correct
8 Correct 227 ms 16356 KB Output is correct
9 Correct 224 ms 16480 KB Output is correct
10 Correct 236 ms 16736 KB Output is correct
11 Correct 252 ms 17408 KB Output is correct
12 Correct 202 ms 16448 KB Output is correct
13 Correct 192 ms 16544 KB Output is correct
14 Correct 193 ms 16560 KB Output is correct
15 Correct 192 ms 16592 KB Output is correct
16 Correct 209 ms 16820 KB Output is correct
17 Correct 210 ms 16548 KB Output is correct
18 Correct 198 ms 16556 KB Output is correct
19 Correct 191 ms 16660 KB Output is correct
20 Correct 237 ms 16640 KB Output is correct
21 Correct 211 ms 16820 KB Output is correct
22 Correct 195 ms 16604 KB Output is correct
23 Correct 253 ms 16468 KB Output is correct
24 Correct 224 ms 16580 KB Output is correct
25 Correct 260 ms 16496 KB Output is correct
26 Correct 229 ms 16456 KB Output is correct
27 Correct 751 ms 42632 KB Output is correct
28 Correct 709 ms 43024 KB Output is correct
29 Correct 712 ms 43304 KB Output is correct
30 Correct 746 ms 42820 KB Output is correct
31 Correct 745 ms 42952 KB Output is correct
32 Correct 527 ms 41096 KB Output is correct
33 Correct 479 ms 41352 KB Output is correct
34 Correct 497 ms 41276 KB Output is correct
35 Correct 488 ms 41352 KB Output is correct
36 Correct 448 ms 41260 KB Output is correct
37 Correct 464 ms 41328 KB Output is correct
38 Correct 1621 ms 118220 KB Output is correct
39 Correct 1695 ms 142588 KB Output is correct
40 Correct 1548 ms 99084 KB Output is correct
41 Correct 1760 ms 144640 KB Output is correct
42 Correct 568 ms 47276 KB Output is correct
43 Correct 521 ms 47132 KB Output is correct
44 Correct 685 ms 70340 KB Output is correct
45 Correct 671 ms 70460 KB Output is correct
46 Correct 668 ms 70492 KB Output is correct
47 Correct 500 ms 47604 KB Output is correct
48 Correct 502 ms 47496 KB Output is correct
49 Correct 561 ms 70392 KB Output is correct
50 Correct 561 ms 70604 KB Output is correct
51 Correct 567 ms 70676 KB Output is correct
52 Correct 1134 ms 84800 KB Output is correct
53 Correct 1433 ms 113032 KB Output is correct
54 Correct 1623 ms 143424 KB Output is correct
55 Correct 1394 ms 113440 KB Output is correct