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Submission #916826

# Submission time Handle Problem Language Result Execution time Memory
916826 2024-01-26T14:51:30 Z happypotato Long Mansion (JOI17_long_mansion) C++17
25 / 100
 3000 ms 83280 KB 
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
const int mxN = 5e5 + 1;
const int MAX = 1e9, MIN = -1e9;
pii seg[(1 << 20)];
pii a[mxN];
int corr[mxN];
vector<int> keys[mxN];
int n;
void build(int l = 1, int r = n, int idx = 1) {
	if (l == r) {
		seg[idx] = a[l];
		return;
	}
	int mid = (l + r) >> 1;
	build(l, mid, (idx << 1));
	build(mid + 1, r, (idx << 1) | 1);
	seg[idx].ff = min(seg[(idx << 1)].ff, seg[(idx << 1) | 1].ff);
	seg[idx].ss = max(seg[(idx << 1)].ss, seg[(idx << 1) | 1].ss);
}
int querymin(int tl, int tr, int l = 1, int r = n, int idx = 1) {
	if (tl <= l && r <= tr) return seg[idx].ff;
	int mid = (l + r) >> 1;
	int res = MAX;
	if (tl <= mid) res = min(res, querymin(tl, tr, l, mid, (idx << 1)));
	if (tr > mid) res = min(res, querymin(tl, tr, mid + 1, r, (idx << 1) | 1));
	return res;
}
int querymax(int tl, int tr, int l = 1, int r = n, int idx = 1) {
	if (tl <= l && r <= tr) return seg[idx].ss;
	int mid = (l + r) >> 1;
	int res = MIN;
	if (tl <= mid) res = max(res, querymax(tl, tr, l, mid, (idx << 1)));
	if (tr > mid) res = max(res, querymax(tl, tr, mid + 1, r, (idx << 1) | 1));
	return res;
}
map<int, bool> sto;
bool recur(int x, int y) {
	// cout << x << ' ' << y << endl;
	if (sto.find(y) != sto.end()) return sto[y];
	sto[y] = false;
	if (x < y) {
		int req = querymin(x + 1, y);
		if (x <= req) { sto.erase(y); return true; }
		if (req == MIN) { sto.erase(y); return false; }
		return sto[y] = recur(x, req);
	} else if (x > y) {
		int req = querymax(y, x - 1);
		if (req <= x) { sto.erase(y); return true; }
		if (req == MAX) { sto.erase(y); return false; }
		return sto[y] = recur(x, req);
	} else return true;
}
int occur[mxN];
vector<int> qfreq[mxN];
void solve() {
	cin >> n;
	for (int i = 1; i < n; i++) cin >> corr[i];
	for (int i = 1; i <= n; i++) {
		int sz; cin >> sz;
		keys[i].resize(sz);
		for (int &x : keys[i]) cin >> x;
	}
 
	// sweep from left to right, take min of max
	for (int i = 1; i <= n; i++) occur[i] = MIN;
	a[1].ff = MIN;
	for (int i = 1; i < n; i++) {
		for (int x : keys[i]) occur[x] = i;
		a[i + 1].ff = occur[corr[i]];
	}
	// sweep from right to left, take max of min
	for (int i = 1; i <= n; i++) occur[i] = MAX;
	a[n].ss = MAX;
	for (int i = n; i > 1; i--) {
		for (int x : keys[i]) occur[x] = i;
		a[i - 1].ss = occur[corr[i - 1]];
	}
 
	// for (int i = 1; i <= n; i++) {
	// 	cout << i << ": " << a[i].ff << ' ' << a[i].ss << endl;
	// }
	build();
 
	int q; cin >> q;
	vector<pair<pii, bool>> queries(q);
	for (int i = 0; i < q; i++) {
		cin >> queries[i].ff.ff >> queries[i].ff.ss;
		qfreq[queries[i].ff.ff].pb(i);
	}
	for (int i = 1; i <= n; i++) {
		sto.clear();
		for (int ptr : qfreq[i]) {
			queries[ptr].ss = recur(queries[ptr].ff.ff, queries[ptr].ff.ss);
		}
	}
	for (int i = 0; i < q; i++) cout << (queries[i].ss ? "YES\n" : "NO\n");
}
int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 31576 KB Output is correct
2 Correct 11 ms 31580 KB Output is correct
3 Correct 12 ms 31576 KB Output is correct
4 Correct 9 ms 31580 KB Output is correct
5 Correct 9 ms 31580 KB Output is correct
6 Correct 9 ms 31580 KB Output is correct
7 Correct 122 ms 31580 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 31576 KB Output is correct
2 Correct 11 ms 31580 KB Output is correct
3 Correct 12 ms 31576 KB Output is correct
4 Correct 9 ms 31580 KB Output is correct
5 Correct 9 ms 31580 KB Output is correct
6 Correct 9 ms 31580 KB Output is correct
7 Correct 122 ms 31580 KB Output is correct
8 Correct 230 ms 42028 KB Output is correct
9 Correct 243 ms 42000 KB Output is correct
10 Correct 237 ms 42324 KB Output is correct
11 Correct 258 ms 42064 KB Output is correct
12 Correct 201 ms 42060 KB Output is correct
13 Correct 109 ms 42496 KB Output is correct
14 Correct 114 ms 42320 KB Output is correct
15 Correct 103 ms 42580 KB Output is correct
16 Correct 102 ms 42576 KB Output is correct
17 Correct 99 ms 42320 KB Output is correct
18 Correct 119 ms 42248 KB Output is correct
19 Correct 113 ms 42320 KB Output is correct
20 Correct 99 ms 41860 KB Output is correct
21 Correct 112 ms 42580 KB Output is correct
22 Correct 123 ms 42320 KB Output is correct
23 Correct 239 ms 42200 KB Output is correct
24 Correct 230 ms 42060 KB Output is correct
25 Correct 270 ms 42204 KB Output is correct
26 Correct 201 ms 42168 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 357 ms 48976 KB Output is correct
2 Correct 350 ms 49012 KB Output is correct
3 Correct 335 ms 48980 KB Output is correct
4 Correct 353 ms 48976 KB Output is correct
5 Correct 363 ms 49104 KB Output is correct
6 Correct 208 ms 47956 KB Output is correct
7 Correct 186 ms 48472 KB Output is correct
8 Correct 192 ms 48500 KB Output is correct
9 Correct 197 ms 48464 KB Output is correct
10 Correct 187 ms 48468 KB Output is correct
11 Correct 181 ms 48468 KB Output is correct

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 31576 KB Output is correct
2 Correct 11 ms 31580 KB Output is correct
3 Correct 12 ms 31576 KB Output is correct
4 Correct 9 ms 31580 KB Output is correct
5 Correct 9 ms 31580 KB Output is correct
6 Correct 9 ms 31580 KB Output is correct
7 Correct 122 ms 31580 KB Output is correct
8 Correct 230 ms 42028 KB Output is correct
9 Correct 243 ms 42000 KB Output is correct
10 Correct 237 ms 42324 KB Output is correct
11 Correct 258 ms 42064 KB Output is correct
12 Correct 201 ms 42060 KB Output is correct
13 Correct 109 ms 42496 KB Output is correct
14 Correct 114 ms 42320 KB Output is correct
15 Correct 103 ms 42580 KB Output is correct
16 Correct 102 ms 42576 KB Output is correct
17 Correct 99 ms 42320 KB Output is correct
18 Correct 119 ms 42248 KB Output is correct
19 Correct 113 ms 42320 KB Output is correct
20 Correct 99 ms 41860 KB Output is correct
21 Correct 112 ms 42580 KB Output is correct
22 Correct 123 ms 42320 KB Output is correct
23 Correct 239 ms 42200 KB Output is correct
24 Correct 230 ms 42060 KB Output is correct
25 Correct 270 ms 42204 KB Output is correct
26 Correct 201 ms 42168 KB Output is correct
27 Correct 357 ms 48976 KB Output is correct
28 Correct 350 ms 49012 KB Output is correct
29 Correct 335 ms 48980 KB Output is correct
30 Correct 353 ms 48976 KB Output is correct
31 Correct 363 ms 49104 KB Output is correct
32 Correct 208 ms 47956 KB Output is correct
33 Correct 186 ms 48472 KB Output is correct
34 Correct 192 ms 48500 KB Output is correct
35 Correct 197 ms 48464 KB Output is correct
36 Correct 187 ms 48468 KB Output is correct
37 Correct 181 ms 48468 KB Output is correct
38 Correct 606 ms 68628 KB Output is correct
39 Correct 643 ms 72784 KB Output is correct
40 Correct 533 ms 64340 KB Output is correct
41 Correct 582 ms 73036 KB Output is correct
42 Correct 214 ms 47704 KB Output is correct
43 Correct 208 ms 47440 KB Output is correct
44 Correct 265 ms 54868 KB Output is correct
45 Correct 260 ms 54868 KB Output is correct
46 Correct 268 ms 54884 KB Output is correct
47 Correct 241 ms 48344 KB Output is correct
48 Correct 231 ms 47788 KB Output is correct
49 Correct 304 ms 55180 KB Output is correct
50 Correct 275 ms 55128 KB Output is correct
51 Correct 268 ms 54864 KB Output is correct
52 Execution timed out 3099 ms 83280 KB Time limit exceeded
53 Halted 0 ms 0 KB -