oj.uz

Submission #884982

# Submission time Handle Problem Language Result Execution time Memory
884982 2023-12-08T18:46:31 Z MinaRagy06 Jail (JOI22_jail) C++17
61 / 100
 5000 ms 25552 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int N = 120'005;
vector<int> adj[N];
int st[N], en[N], h[N], anc[N][17], t;
void dfs(int i, int par, int d = 0) {
	anc[i][0] = par;
	for (int j = 1; j < 17; j++) {
		anc[i][j] = anc[anc[i][j - 1]][j - 1];
	}
	h[i] = d;
	st[i] = t++;
	for (auto nxt : adj[i]) {
		if (nxt == par) continue;
		dfs(nxt, i, d + 1);
	}
	en[i] = t - 1;
}
int getlca(int u, int v) {
	if (st[u] <= st[v] && en[v] <= en[u]) {
		return u;
	}
	for (int j = 16; j >= 0; j--) {
		int nxtu = anc[u][j];
		if (!(st[nxtu] <= st[v] && en[v] <= en[nxtu])) {
			u = nxtu;
		}
	}
	return anc[u][0];
}
struct path {
	int s, e, lca;
} a[N];
int m;
bool vis[N], instack[N];
bool dfs2(int i) {
	vis[i] = 1;
	instack[i] = 1;
	bool ok = 1;
// 	cout << i + 1 << '\n';
	for (int j = 0; j < m; j++) {
		if (j == i) continue;
		bool gud = st[a[i].lca] <= st[a[j].s] && st[a[j].s] <= st[a[i].s] && st[a[i].s] <= en[a[j].s];
		gud |= st[a[i].lca] <= st[a[j].s] && st[a[j].s] <= st[a[i].e] && st[a[i].e] <= en[a[j].s];
		
		gud |= st[a[j].lca] <= st[a[i].e] && st[a[i].e] <= st[a[j].s] && st[a[j].s] <= en[a[i].e];
		gud |= st[a[j].lca] <= st[a[i].e] && st[a[i].e] <= st[a[j].e] && st[a[j].e] <= en[a[i].e];
		if (gud) {
			if (instack[j]) {
				ok = 0;
				break;
			}
			if (vis[j]) continue;
			if (!dfs2(j)) {
				ok = 0;
				break;
			}
		}
	}
	instack[i] = 0;
	return ok;
}
int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	int T;
	cin >> T;
	while (T--) {
		int n;
		cin >> n;
		for (int i = 0; i < n; i++) {
			adj[i].clear();
			vis[i] = 0;
			instack[i] = 0;
		}
		for (int i = 1, u, v; i < n; i++) {
			cin >> u >> v;
			u--, v--;
			adj[u].push_back(v);
			adj[v].push_back(u);
		}
		t = 0;
		dfs(0, 0);
		cin >> m;
		for (int i = 0; i < m; i++) {
			cin >> a[i].s >> a[i].e;
			a[i].s--, a[i].e--;
			a[i].lca = getlca(a[i].s, a[i].e);
// 			cout << a[i].s + 1 << ' ' << a[i].e + 1 << ' ' << a[i].lca + 1 << '\n';
		}
		auto check = [&] (int i, int x) {
			if (st[a[i].lca] <= st[x] && en[x] <= en[a[i].lca] && 
				((st[x] <= st[a[i].s] && en[a[i].s] <= en[x]) ||
				(st[x] <= st[a[i].e] && en[a[i].e] <= en[x]))) {
				return 1;
			}
			return 0;
		};
		bool ok = 1;
		for (int i = 0; i < m; i++) {
			if (vis[i]) continue;
			if (!dfs2(i)) {
				ok = 0;
			}
		}
		cout << (ok? "Yes\n" : "No\n");
	}
	return 0;
}

Compilation message

jail.cpp: In function 'int main()':
jail.cpp:92:8: warning: variable 'check' set but not used [-Wunused-but-set-variable]
   92 |   auto check = [&] (int i, int x) {
      |        ^~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 1 ms 7772 KB Output is correct
4 Correct 10 ms 7772 KB Output is correct
5 Correct 18 ms 7772 KB Output is correct
6 Correct 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 4 ms 7768 KB Output is correct
9 Correct 37 ms 8540 KB Output is correct
10 Correct 34 ms 25424 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 33 ms 7996 KB Output is correct
13 Execution timed out 5038 ms 25428 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 2 ms 7772 KB Output is correct
5 Correct 2 ms 7772 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 2 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7772 KB Output is correct
12 Correct 2 ms 7772 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 2 ms 7772 KB Output is correct
5 Correct 2 ms 7772 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 2 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7772 KB Output is correct
12 Correct 2 ms 7772 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct
14 Correct 2 ms 7772 KB Output is correct
15 Correct 2 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7772 KB Output is correct
18 Correct 2 ms 7768 KB Output is correct
19 Correct 2 ms 7768 KB Output is correct
20 Correct 4 ms 7772 KB Output is correct
21 Correct 3 ms 7772 KB Output is correct
22 Correct 2 ms 7772 KB Output is correct
23 Correct 2 ms 7768 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 2 ms 7772 KB Output is correct
26 Correct 2 ms 7772 KB Output is correct
27 Correct 2 ms 7772 KB Output is correct
28 Correct 2 ms 7772 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 2 ms 7772 KB Output is correct
5 Correct 2 ms 7772 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 2 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7772 KB Output is correct
12 Correct 2 ms 7772 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct
14 Correct 2 ms 7772 KB Output is correct
15 Correct 2 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7772 KB Output is correct
18 Correct 2 ms 7768 KB Output is correct
19 Correct 2 ms 7768 KB Output is correct
20 Correct 4 ms 7772 KB Output is correct
21 Correct 3 ms 7772 KB Output is correct
22 Correct 2 ms 7772 KB Output is correct
23 Correct 2 ms 7768 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 2 ms 7772 KB Output is correct
26 Correct 2 ms 7772 KB Output is correct
27 Correct 2 ms 7772 KB Output is correct
28 Correct 2 ms 7772 KB Output is correct
29 Correct 3 ms 7772 KB Output is correct
30 Correct 4 ms 7860 KB Output is correct
31 Correct 3 ms 7772 KB Output is correct
32 Correct 4 ms 7772 KB Output is correct
33 Correct 3 ms 7772 KB Output is correct
34 Correct 4 ms 7772 KB Output is correct
35 Correct 3 ms 7772 KB Output is correct
36 Correct 4 ms 8004 KB Output is correct
37 Correct 4 ms 7772 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 2 ms 7772 KB Output is correct
5 Correct 2 ms 7772 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 2 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7772 KB Output is correct
12 Correct 2 ms 7772 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct
14 Correct 2 ms 7772 KB Output is correct
15 Correct 2 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7772 KB Output is correct
18 Correct 2 ms 7768 KB Output is correct
19 Correct 2 ms 7768 KB Output is correct
20 Correct 4 ms 7772 KB Output is correct
21 Correct 3 ms 7772 KB Output is correct
22 Correct 2 ms 7772 KB Output is correct
23 Correct 2 ms 7768 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 2 ms 7772 KB Output is correct
26 Correct 2 ms 7772 KB Output is correct
27 Correct 2 ms 7772 KB Output is correct
28 Correct 2 ms 7772 KB Output is correct
29 Correct 3 ms 7772 KB Output is correct
30 Correct 4 ms 7860 KB Output is correct
31 Correct 3 ms 7772 KB Output is correct
32 Correct 4 ms 7772 KB Output is correct
33 Correct 3 ms 7772 KB Output is correct
34 Correct 4 ms 7772 KB Output is correct
35 Correct 3 ms 7772 KB Output is correct
36 Correct 4 ms 8004 KB Output is correct
37 Correct 4 ms 7772 KB Output is correct
38 Correct 38 ms 8540 KB Output is correct
39 Correct 34 ms 25552 KB Output is correct
40 Correct 79 ms 8464 KB Output is correct
41 Correct 91 ms 8220 KB Output is correct
42 Correct 69 ms 8388 KB Output is correct
43 Correct 22 ms 8284 KB Output is correct
44 Correct 29 ms 8020 KB Output is correct
45 Correct 46 ms 18008 KB Output is correct
46 Correct 61 ms 18084 KB Output is correct
47 Correct 44 ms 21584 KB Output is correct
48 Correct 39 ms 21584 KB Output is correct
49 Correct 40 ms 18176 KB Output is correct
50 Correct 42 ms 18008 KB Output is correct
51 Correct 34 ms 19292 KB Output is correct
52 Correct 34 ms 19216 KB Output is correct
53 Correct 36 ms 8276 KB Output is correct
54 Correct 44 ms 18008 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 2 ms 7768 KB Output is correct
5 Correct 6 ms 7768 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 2 ms 7772 KB Output is correct
9 Correct 2 ms 7772 KB Output is correct
10 Correct 2 ms 7768 KB Output is correct
11 Correct 2 ms 7772 KB Output is correct
12 Correct 4 ms 7996 KB Output is correct
13 Correct 30 ms 7772 KB Output is correct
14 Correct 33 ms 7768 KB Output is correct
15 Correct 32 ms 7768 KB Output is correct
16 Correct 1261 ms 18252 KB Output is correct
17 Execution timed out 5011 ms 18280 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7772 KB Output is correct
2 Correct 2 ms 7772 KB Output is correct
3 Correct 1 ms 7772 KB Output is correct
4 Correct 10 ms 7772 KB Output is correct
5 Correct 18 ms 7772 KB Output is correct
6 Correct 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 4 ms 7768 KB Output is correct
9 Correct 37 ms 8540 KB Output is correct
10 Correct 34 ms 25424 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 33 ms 7996 KB Output is correct
13 Execution timed out 5038 ms 25428 KB Time limit exceeded
14 Halted 0 ms 0 KB -