oj.uz

Submission #204747

# Submission time Handle Problem Language Result Execution time Memory
204747 2020-02-26T20:02:14 Z hanagasumi Long Mansion (JOI17_long_mansion) C++17
100 / 100
 1155 ms 60664 KB 
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <deque>
#include <map>
#include <set>
#include <complex>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <chrono>
 
#define ft first
#define sc second
#define pb push_back
#define len(v) (int)v.size()
// #define int ll
 
using namespace std;
typedef long long ll;
typedef long double ld;

vector<int> tree_l;
vector<int> tree_r;
int N = 1;
int inf = 1e9;

void upd_l(int v) {
	if(v == 0) 
		return;
	tree_l[v] = min(tree_l[v * 2], tree_l[v * 2 + 1]);
	upd_l(v / 2);
}

void upd_r(int v) {
	if(v == 0) 
		return;
	tree_r[v] = max(tree_r[v * 2], tree_r[v * 2 + 1]);
	upd_r(v / 2);
}

int get_l(int v, int l, int r, int vl, int vr) {
	if(vr <= l || r <= vl) 
		return inf;
	if(vl <= l && r <= vr) 
		return tree_l[v];
	int m = (l + r) / 2;
	return min(get_l(v * 2, l, m, vl, vr), get_l(v * 2 + 1, m, r, vl, vr));
}

int get_r(int v, int l, int r, int vl, int vr) {
	if(vr <= l || r <= vl) 
		return -inf;
	if(vl <= l && r <= vr) 
		return tree_r[v];
	int m = (l + r) / 2;
	return max(get_r(v * 2, l, m, vl, vr), get_r(v * 2 + 1, m, r, vl, vr));
}


signed main() {
	#ifdef PC 
		freopen("in.txt", "r", stdin);
		freopen("out.txt", "w", stdout);
	#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	int n;	
	cin >> n;
	while(N < (n + 1)) 
		N *= 2;
	tree_l = vector<int> (2 * N, inf);
	tree_r = vector<int> (2 * N, -inf);

	vector<int> per(n);
	vector<vector<int>> keys(n);
	vector<vector<int>> types(n);
	vector<int> l(n);
	for (int i = 1; i < n; i++) {
		cin >> per[i];
		per[i]--;
	}
	for (int i = 0; i < n; i++) {
		int k;
		cin >> k;
		for (int j = 0; j < k; j++) {
			int x;
			cin >> x;
			x--;
			types[x].pb(i);
			keys[i].pb(x);
		}
	}

	//calc v<>l

	for (int i = 0; i < n; i++) {
		l[i] = i;
		int ln = i;
		while(1) {
			bool flag = 1;
			ln = min(ln, get_l(1, 0, N, ln, i + 1));
			if(ln > 0) {	
				auto uk = lower_bound(types[per[ln]].begin(), types[per[ln]].end(), ln);
				if(uk != types[per[ln]].end() && (*uk <= i)) {
					ln--;
					flag = 0;
				}
			}
			if(flag)
				break;
		}
		l[i] = ln;
		tree_l[N + i] = l[i];
		upd_l((N + i) / 2);
	}

	// calc ans
	vector<pair<int, int>> ans(n);
	for (int i = n - 1; i >= 0; i--) {
		int ln = i, rn = i + 1;
		while(1) {
			bool flag = 1;
			ln = min(ln, get_l(1, 0, N, ln, rn));
			rn = max(rn, get_r(1, 0, N, ln, rn));
			if(ln > 0) {
				auto uk = lower_bound(types[per[ln]].begin(), types[per[ln]].end(), ln);
				if(uk != types[per[ln]].end() && (*uk < rn)) {
					ln--;
					flag = 0;
				}
			}
			if(rn < n) {
				auto uk = lower_bound(types[per[rn]].begin(), types[per[rn]].end(), rn);
				if(uk != types[per[rn]].begin()) {
					uk--;
					if(*uk >= ln) {
						rn++;
						flag = 0;
					}
				}
			}
			if(flag)
				break;
		}
		ans[i] = {ln, rn - 1};
		tree_l[N + i] = ans[i].ft;
		tree_r[N + i] = ans[i].sc + 1;
		upd_l((N + i) / 2);
		upd_l((N + i) / 2);
		// cout << i << " " << ans[i].ft << " " << ans[i].sc << endl;
	}

	int q;
	cin >> q;
	for (int i = 0; i < q; i++) {
		int a, b;
		cin >> a >> b;
		a--, b--;
		if(ans[a].ft <= b && b <= ans[a].sc) 
			cout << "YES" << '\n';
		else
			cout << "NO" << '\n';
	}

}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 632 KB Output is correct
2 Correct 11 ms 888 KB Output is correct
3 Correct 14 ms 1016 KB Output is correct
4 Correct 9 ms 632 KB Output is correct
5 Correct 9 ms 632 KB Output is correct
6 Correct 10 ms 760 KB Output is correct
7 Correct 10 ms 888 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 632 KB Output is correct
2 Correct 11 ms 888 KB Output is correct
3 Correct 14 ms 1016 KB Output is correct
4 Correct 9 ms 632 KB Output is correct
5 Correct 9 ms 632 KB Output is correct
6 Correct 10 ms 760 KB Output is correct
7 Correct 10 ms 888 KB Output is correct
8 Correct 131 ms 3960 KB Output is correct
9 Correct 136 ms 3960 KB Output is correct
10 Correct 145 ms 4296 KB Output is correct
11 Correct 132 ms 4600 KB Output is correct
12 Correct 118 ms 3960 KB Output is correct
13 Correct 126 ms 4216 KB Output is correct
14 Correct 128 ms 4088 KB Output is correct
15 Correct 130 ms 4216 KB Output is correct
16 Correct 127 ms 4600 KB Output is correct
17 Correct 126 ms 4088 KB Output is correct
18 Correct 135 ms 4088 KB Output is correct
19 Correct 127 ms 4344 KB Output is correct
20 Correct 123 ms 4344 KB Output is correct
21 Correct 125 ms 4344 KB Output is correct
22 Correct 131 ms 4216 KB Output is correct
23 Correct 128 ms 3960 KB Output is correct
24 Correct 135 ms 3960 KB Output is correct
25 Correct 128 ms 4088 KB Output is correct
26 Correct 134 ms 3960 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 410 ms 18148 KB Output is correct
2 Correct 404 ms 16888 KB Output is correct
3 Correct 388 ms 16604 KB Output is correct
4 Correct 415 ms 17144 KB Output is correct
5 Correct 401 ms 17016 KB Output is correct
6 Correct 343 ms 15608 KB Output is correct
7 Correct 336 ms 15736 KB Output is correct
8 Correct 318 ms 15864 KB Output is correct
9 Correct 324 ms 15736 KB Output is correct
10 Correct 325 ms 15764 KB Output is correct
11 Correct 320 ms 15868 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 632 KB Output is correct
2 Correct 11 ms 888 KB Output is correct
3 Correct 14 ms 1016 KB Output is correct
4 Correct 9 ms 632 KB Output is correct
5 Correct 9 ms 632 KB Output is correct
6 Correct 10 ms 760 KB Output is correct
7 Correct 10 ms 888 KB Output is correct
8 Correct 131 ms 3960 KB Output is correct
9 Correct 136 ms 3960 KB Output is correct
10 Correct 145 ms 4296 KB Output is correct
11 Correct 132 ms 4600 KB Output is correct
12 Correct 118 ms 3960 KB Output is correct
13 Correct 126 ms 4216 KB Output is correct
14 Correct 128 ms 4088 KB Output is correct
15 Correct 130 ms 4216 KB Output is correct
16 Correct 127 ms 4600 KB Output is correct
17 Correct 126 ms 4088 KB Output is correct
18 Correct 135 ms 4088 KB Output is correct
19 Correct 127 ms 4344 KB Output is correct
20 Correct 123 ms 4344 KB Output is correct
21 Correct 125 ms 4344 KB Output is correct
22 Correct 131 ms 4216 KB Output is correct
23 Correct 128 ms 3960 KB Output is correct
24 Correct 135 ms 3960 KB Output is correct
25 Correct 128 ms 4088 KB Output is correct
26 Correct 134 ms 3960 KB Output is correct
27 Correct 410 ms 18148 KB Output is correct
28 Correct 404 ms 16888 KB Output is correct
29 Correct 388 ms 16604 KB Output is correct
30 Correct 415 ms 17144 KB Output is correct
31 Correct 401 ms 17016 KB Output is correct
32 Correct 343 ms 15608 KB Output is correct
33 Correct 336 ms 15736 KB Output is correct
34 Correct 318 ms 15864 KB Output is correct
35 Correct 324 ms 15736 KB Output is correct
36 Correct 325 ms 15764 KB Output is correct
37 Correct 320 ms 15868 KB Output is correct
38 Correct 683 ms 51832 KB Output is correct
39 Correct 737 ms 60664 KB Output is correct
40 Correct 565 ms 42104 KB Output is correct
41 Correct 1155 ms 60256 KB Output is correct
42 Correct 356 ms 15864 KB Output is correct
43 Correct 362 ms 15616 KB Output is correct
44 Correct 661 ms 29436 KB Output is correct
45 Correct 676 ms 29432 KB Output is correct
46 Correct 644 ms 29688 KB Output is correct
47 Correct 385 ms 16248 KB Output is correct
48 Correct 361 ms 15736 KB Output is correct
49 Correct 655 ms 28408 KB Output is correct
50 Correct 673 ms 28664 KB Output is correct
51 Correct 719 ms 29812 KB Output is correct
52 Correct 494 ms 31224 KB Output is correct
53 Correct 660 ms 47476 KB Output is correct
54 Correct 838 ms 60408 KB Output is correct
55 Correct 660 ms 47736 KB Output is correct