oj.uz

Submission #538030

# Submission time Handle Problem Language Result Execution time Memory
538030 2022-03-16T03:29:42 Z 8e7 Long Mansion (JOI17_long_mansion) C++17
100 / 100
 440 ms 36568 KB 
//Challenge: Accepted
#include <bits/stdc++.h>
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 500005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
vector<int> pos[maxn];
int c[maxn];
pii ans[maxn];
pii merge(pii x, pii y){return {min(x.ff, y.ff), max(x.ss, y.ss)};}
bool vis[maxn];
struct DSU{
	pii ran[maxn];
	int par[maxn];
	void init(int n) {
		for (int i = 1;i <= n;i++) par[i] = i, ran[i] = {i, i};
	}
	int find(int a) {
		return a == par[a] ? a : (par[a] = find(par[a]));
	}
	pii getran(int a) {
		return ran[find(a)];
	}
	void Union(int a, int b) {
		a = find(a), b = find(b);
		ran[b] = merge(ran[b], ran[a]);
		par[a] = b;
	}
} d;
bool key(int x, pii p) {
	int il = lower_bound(pos[x].begin(), pos[x].end(), p.ff) - pos[x].begin();
	int ir = upper_bound(pos[x].begin(), pos[x].end(), p.ss) - pos[x].begin();
	return ir > il;	
}
int tot;
bool solve(int n, int par) {
	while (true) {
		n = d.find(n);
		pii r = d.getran(n);	
		auto upd = [&] (int x) {
			if (d.find(par) == d.find(x)) return 1;
			if (solve(x, n)) {
				d.Union(x, n);
			} else {
				d.ran[n] = merge(d.ran[n], d.ran[x]);				
			}
			return 0;
		};
		if (r.ff > 1 && key(c[r.ff-1], r)) {
			if (upd(r.ff-1)) return 1;
		} else if (r.ss < tot && key(c[r.ss], r)) {
			if (upd(r.ss+1)) return 1;
		} else {
			break;
		}
	}
	return 0;
}
int main() {
	io
	int n;
	cin >> n;
	tot = n;
	for (int i = 1;i <= n - 1;i++) cin >> c[i];	
	for (int i = 1;i <= n;i++) {
		int bi;
		cin >> bi;
		for (int j = 0;j < bi;j++) {
			int x;cin>> x;
			pos[x].push_back(i);
		}
	}
	d.init(n);
	for (int i = 1;i <= n;i++) {
		if (vis[d.find(i)]) continue;
		solve(i, 0);
		vis[d.find(i)] = 1;
	}
	for (int i = 1;i <= n;i++) {
		ans[i] = d.getran(i);
	}
	int q;
	cin >> q;
	while (q--) {
		int x, y;
		cin >> x >> y;
		cout << (y <= ans[x].ss && y >= ans[x].ff ? "YES" : "NO") << "\n";
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16076 KB Output is correct
2 Correct 12 ms 16112 KB Output is correct
3 Correct 13 ms 16212 KB Output is correct
4 Correct 11 ms 16084 KB Output is correct
5 Correct 12 ms 16084 KB Output is correct
6 Correct 12 ms 16176 KB Output is correct
7 Correct 11 ms 16176 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16076 KB Output is correct
2 Correct 12 ms 16112 KB Output is correct
3 Correct 13 ms 16212 KB Output is correct
4 Correct 11 ms 16084 KB Output is correct
5 Correct 12 ms 16084 KB Output is correct
6 Correct 12 ms 16176 KB Output is correct
7 Correct 11 ms 16176 KB Output is correct
8 Correct 121 ms 18844 KB Output is correct
9 Correct 148 ms 18940 KB Output is correct
10 Correct 107 ms 19012 KB Output is correct
11 Correct 112 ms 19084 KB Output is correct
12 Correct 114 ms 19060 KB Output is correct
13 Correct 102 ms 19012 KB Output is correct
14 Correct 109 ms 19044 KB Output is correct
15 Correct 107 ms 19176 KB Output is correct
16 Correct 102 ms 19344 KB Output is correct
17 Correct 138 ms 19068 KB Output is correct
18 Correct 110 ms 19068 KB Output is correct
19 Correct 100 ms 19068 KB Output is correct
20 Correct 117 ms 19240 KB Output is correct
21 Correct 105 ms 19240 KB Output is correct
22 Correct 120 ms 19124 KB Output is correct
23 Correct 118 ms 18892 KB Output is correct
24 Correct 110 ms 18916 KB Output is correct
25 Correct 107 ms 18892 KB Output is correct
26 Correct 111 ms 18880 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 218 ms 22912 KB Output is correct
2 Correct 306 ms 22500 KB Output is correct
3 Correct 199 ms 22712 KB Output is correct
4 Correct 237 ms 22804 KB Output is correct
5 Correct 246 ms 22900 KB Output is correct
6 Correct 180 ms 21912 KB Output is correct
7 Correct 191 ms 22044 KB Output is correct
8 Correct 158 ms 22100 KB Output is correct
9 Correct 182 ms 22208 KB Output is correct
10 Correct 157 ms 22148 KB Output is correct
11 Correct 147 ms 22036 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16076 KB Output is correct
2 Correct 12 ms 16112 KB Output is correct
3 Correct 13 ms 16212 KB Output is correct
4 Correct 11 ms 16084 KB Output is correct
5 Correct 12 ms 16084 KB Output is correct
6 Correct 12 ms 16176 KB Output is correct
7 Correct 11 ms 16176 KB Output is correct
8 Correct 121 ms 18844 KB Output is correct
9 Correct 148 ms 18940 KB Output is correct
10 Correct 107 ms 19012 KB Output is correct
11 Correct 112 ms 19084 KB Output is correct
12 Correct 114 ms 19060 KB Output is correct
13 Correct 102 ms 19012 KB Output is correct
14 Correct 109 ms 19044 KB Output is correct
15 Correct 107 ms 19176 KB Output is correct
16 Correct 102 ms 19344 KB Output is correct
17 Correct 138 ms 19068 KB Output is correct
18 Correct 110 ms 19068 KB Output is correct
19 Correct 100 ms 19068 KB Output is correct
20 Correct 117 ms 19240 KB Output is correct
21 Correct 105 ms 19240 KB Output is correct
22 Correct 120 ms 19124 KB Output is correct
23 Correct 118 ms 18892 KB Output is correct
24 Correct 110 ms 18916 KB Output is correct
25 Correct 107 ms 18892 KB Output is correct
26 Correct 111 ms 18880 KB Output is correct
27 Correct 218 ms 22912 KB Output is correct
28 Correct 306 ms 22500 KB Output is correct
29 Correct 199 ms 22712 KB Output is correct
30 Correct 237 ms 22804 KB Output is correct
31 Correct 246 ms 22900 KB Output is correct
32 Correct 180 ms 21912 KB Output is correct
33 Correct 191 ms 22044 KB Output is correct
34 Correct 158 ms 22100 KB Output is correct
35 Correct 182 ms 22208 KB Output is correct
36 Correct 157 ms 22148 KB Output is correct
37 Correct 147 ms 22036 KB Output is correct
38 Correct 318 ms 28524 KB Output is correct
39 Correct 276 ms 30076 KB Output is correct
40 Correct 241 ms 26988 KB Output is correct
41 Correct 440 ms 29516 KB Output is correct
42 Correct 170 ms 22380 KB Output is correct
43 Correct 168 ms 22140 KB Output is correct
44 Correct 270 ms 25884 KB Output is correct
45 Correct 237 ms 25800 KB Output is correct
46 Correct 260 ms 25908 KB Output is correct
47 Correct 167 ms 22184 KB Output is correct
48 Correct 190 ms 21848 KB Output is correct
49 Correct 210 ms 24956 KB Output is correct
50 Correct 303 ms 25324 KB Output is correct
51 Correct 245 ms 25960 KB Output is correct
52 Correct 237 ms 27408 KB Output is correct
53 Correct 229 ms 31848 KB Output is correct
54 Correct 296 ms 36568 KB Output is correct
55 Correct 236 ms 31308 KB Output is correct