oj.uz

Submission #347308

# Submission time Handle Problem Language Result Execution time Memory
347308 2021-01-12T14:01:53 Z guka415 Long Mansion (JOI17_long_mansion) C++14
25 / 100
 3000 ms 196436 KB 
#define _CRT_SECURE_NO_WARNINGS
#define fast ios::sync_with_stdio(false); cin.tie(0)
#define foru(i, k, n) for (int i = k; i < n; i++)
#define ford(i, k, n) for (int i = k; i >= n; i--)
#define pb push_back
#define ff first
#define ss second

#include <iostream>
#include <vector>
#include <algorithm>
#include <bitset>
#include <queue>
#include <unordered_set>
#include <set>

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int sz = 5e5 + 5;
int n, m, c[sz], nc[sz];
vector<int> a[sz], na[sz], adj[sz];
int lfinal[sz], rfinal[sz], closestL[sz], closestR[sz], lmn[sz], rmx[sz];
short connectedTo[sz];
vector<pii> comps;
vector<int> top;
set<int> st[sz];

void input() {
	cin >> n;
	foru(i, 0, n - 1) {
		cin >> c[i]; c[i]--;
	}
	foru(i, 0, n) {
		int tmp, xx;
		cin >> tmp;
		while (tmp--) {
			cin >> xx;
			a[i].pb(--xx);
		}
	}
}

void computeConnectedTo() {
	foru(i, 0, n) {
		bool found = 0;
		if (i != 0) {
			for (int x : a[i]) {
				if (x == c[i - 1]) {
					connectedTo[i] = -1;
					found = 1;
					break;
				}
			}
			if (found)continue;
		}
		if (i != n - 1) {
			for (int x : a[i]) {
				if (x == c[i]) {
					connectedTo[i] = 1;
					found = 1;
					break;
				}
			}
			if (found)continue;
		}
	}
}

void computeComps() {
	int prvStart = 0;
	foru(i, 0, n) {
		if (i == n - 1 || connectedTo[i] != 1 || connectedTo[i + 1] != -1) {
			comps.pb({ prvStart,i });
			prvStart = i + 1;
		}
	}
	m = comps.size();
	unordered_set<int> mem;
	foru(i, 0, m) {
		mem.clear();
		foru(j, comps[i].ff, comps[i].ss + 1) {
			for (int x : a[j])mem.insert(x);
		}
		for (int x : mem) {
			na[i].pb(x);
			st[x].insert(i);
		}
		if (connectedTo[comps[i].ff] == -1)adj[i - 1].pb(i);
		if (connectedTo[comps[i].ss] == 1)adj[i + 1].pb(i);
		if (i != m - 1)nc[i] = c[comps[i].ss];
		lfinal[i] = rfinal[i] = i;
	}
}

void topoSort() {
	vector<int> indeg(m, 0);
	foru(i, 0, m) {
		for (int x : adj[i])indeg[x]++;
	}
	queue<int> q;
	foru(i, 0, m) {
		if (indeg[i] == 0)q.push(i);
	}
	while (!q.empty()) {
		int x = q.front(); q.pop();
		top.pb(x);
		for (int y : adj[x]) {
			indeg[y]--;
			if (indeg[y] == 0)q.push(y);
		}
	}
}

void computeClosest() {
	for (int i = 0; i < n; i++) {
		st[i].insert(-1), st[i].insert(m + 1);
	}
	for (int i = 0; i < m - 1; i++) {
		auto it = st[nc[i]].upper_bound(i);
		closestR[i] = (*it);
		--it;
		closestL[i] = (*it);
	}
}

void computeRanges() {
	int src;
	foru(i, 0, m) {
		src = top[i];
		if (connectedTo[comps[src].ff] == 0 && connectedTo[comps[src].ss] == 0)continue;
		else if (connectedTo[comps[src].ss] == 1) {
			if (lfinal[src + 1] <= src) {
				lfinal[src] = lfinal[src + 1];
				rfinal[src] = rfinal[src + 1];
				continue;
			}
			lfinal[src] = min(lfinal[src], lfinal[src + 1]);
			rfinal[src] = max(rfinal[src], rfinal[src + 1]);
		}
		else if (connectedTo[comps[src].ff] == -1) {
			if (rfinal[src - 1] >= src) {
				lfinal[src] = lfinal[src - 1];
				rfinal[src] = rfinal[src - 1];
				continue;
			}
			lfinal[src] = min(lfinal[src], lfinal[src - 1]);
			rfinal[src] = max(rfinal[src], rfinal[src - 1]);
		}
		while (true) {
			if (rfinal[src] != m - 1 && closestL[rfinal[src]] >= lfinal[src]) rfinal[src]++;
			else if (lfinal[src] != 0 && closestR[lfinal[src] - 1] <= rfinal[src]) lfinal[src]--;
			else break;
		}
	}
}

void computeFinal() {
	foru(i, 0, m) {
		foru(j, comps[i].ff, comps[i].ss + 1) {
			lmn[j] = comps[lfinal[i]].ff;
			rmx[j] = comps[rfinal[i]].ss;
		}
	}
}

int main() {
	fast;
	input();
	computeConnectedTo();
	computeComps();
	topoSort();
	computeClosest();
	computeRanges();
	computeFinal();
	int q, x, y;
	cin >> q;
	while (q--) {
		cin >> x >> y;
		x--; y--;
		if (y >= lmn[x] && y <= rmx[x])cout << "YES\n";
		else cout << "NO\n";
	}
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 59884 KB Output is correct
2 Correct 43 ms 60012 KB Output is correct
3 Correct 56 ms 60524 KB Output is correct
4 Correct 46 ms 59884 KB Output is correct
5 Correct 41 ms 59884 KB Output is correct
6 Correct 40 ms 59884 KB Output is correct
7 Correct 39 ms 59756 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 59884 KB Output is correct
2 Correct 43 ms 60012 KB Output is correct
3 Correct 56 ms 60524 KB Output is correct
4 Correct 46 ms 59884 KB Output is correct
5 Correct 41 ms 59884 KB Output is correct
6 Correct 40 ms 59884 KB Output is correct
7 Correct 39 ms 59756 KB Output is correct
8 Correct 162 ms 65772 KB Output is correct
9 Correct 149 ms 65644 KB Output is correct
10 Correct 157 ms 66176 KB Output is correct
11 Correct 165 ms 66924 KB Output is correct
12 Correct 139 ms 65132 KB Output is correct
13 Correct 147 ms 66028 KB Output is correct
14 Correct 168 ms 65844 KB Output is correct
15 Correct 148 ms 65900 KB Output is correct
16 Correct 142 ms 65772 KB Output is correct
17 Correct 146 ms 65772 KB Output is correct
18 Correct 149 ms 65856 KB Output is correct
19 Correct 148 ms 65900 KB Output is correct
20 Correct 162 ms 65900 KB Output is correct
21 Correct 153 ms 65900 KB Output is correct
22 Correct 146 ms 65772 KB Output is correct
23 Correct 152 ms 65516 KB Output is correct
24 Correct 149 ms 65516 KB Output is correct
25 Correct 164 ms 65644 KB Output is correct
26 Correct 155 ms 65520 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1163 ms 104040 KB Output is correct
2 Correct 1746 ms 109728 KB Output is correct
3 Correct 2563 ms 107616 KB Output is correct
4 Correct 1351 ms 110584 KB Output is correct
5 Correct 1450 ms 110400 KB Output is correct
6 Correct 997 ms 97376 KB Output is correct
7 Correct 821 ms 98536 KB Output is correct
8 Correct 667 ms 98912 KB Output is correct
9 Correct 600 ms 99296 KB Output is correct
10 Correct 419 ms 99424 KB Output is correct
11 Correct 448 ms 99352 KB Output is correct

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 59884 KB Output is correct
2 Correct 43 ms 60012 KB Output is correct
3 Correct 56 ms 60524 KB Output is correct
4 Correct 46 ms 59884 KB Output is correct
5 Correct 41 ms 59884 KB Output is correct
6 Correct 40 ms 59884 KB Output is correct
7 Correct 39 ms 59756 KB Output is correct
8 Correct 162 ms 65772 KB Output is correct
9 Correct 149 ms 65644 KB Output is correct
10 Correct 157 ms 66176 KB Output is correct
11 Correct 165 ms 66924 KB Output is correct
12 Correct 139 ms 65132 KB Output is correct
13 Correct 147 ms 66028 KB Output is correct
14 Correct 168 ms 65844 KB Output is correct
15 Correct 148 ms 65900 KB Output is correct
16 Correct 142 ms 65772 KB Output is correct
17 Correct 146 ms 65772 KB Output is correct
18 Correct 149 ms 65856 KB Output is correct
19 Correct 148 ms 65900 KB Output is correct
20 Correct 162 ms 65900 KB Output is correct
21 Correct 153 ms 65900 KB Output is correct
22 Correct 146 ms 65772 KB Output is correct
23 Correct 152 ms 65516 KB Output is correct
24 Correct 149 ms 65516 KB Output is correct
25 Correct 164 ms 65644 KB Output is correct
26 Correct 155 ms 65520 KB Output is correct
27 Correct 1163 ms 104040 KB Output is correct
28 Correct 1746 ms 109728 KB Output is correct
29 Correct 2563 ms 107616 KB Output is correct
30 Correct 1351 ms 110584 KB Output is correct
31 Correct 1450 ms 110400 KB Output is correct
32 Correct 997 ms 97376 KB Output is correct
33 Correct 821 ms 98536 KB Output is correct
34 Correct 667 ms 98912 KB Output is correct
35 Correct 600 ms 99296 KB Output is correct
36 Correct 419 ms 99424 KB Output is correct
37 Correct 448 ms 99352 KB Output is correct
38 Correct 1116 ms 175956 KB Output is correct
39 Correct 986 ms 196436 KB Output is correct
40 Correct 918 ms 155428 KB Output is correct
41 Execution timed out 3086 ms 182868 KB Time limit exceeded
42 Halted 0 ms 0 KB -