oj.uz

Submission #884985

# Submission time Handle Problem Language Result Execution time Memory
884985 2023-12-08T18:48:57 Z MinaRagy06 Jail (JOI22_jail) C++17
61 / 100
 5000 ms 25556 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[i].e] <= st[a[j].s] && st[a[j].s] <= en[a[i].e] && st[a[j].lca] <= st[a[i].e];
		gud |= st[a[i].e] <= st[a[j].e] && st[a[j].e] <= en[a[i].e] && st[a[j].lca] <= st[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:91:8: warning: variable 'check' set but not used [-Wunused-but-set-variable]
   91 |   auto check = [&] (int i, int x) {
      |        ^~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7772 KB Output is correct
2 Correct 1 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 10 ms 7772 KB Output is correct
5 Correct 18 ms 7768 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 2 ms 7772 KB Output is correct
8 Correct 3 ms 7768 KB Output is correct
9 Correct 38 ms 8540 KB Output is correct
10 Correct 37 ms 25556 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 33 ms 7992 KB Output is correct
13 Execution timed out 5070 ms 25356 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 7768 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 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 2 ms 7772 KB Output is correct
11 Correct 2 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 7768 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 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 2 ms 7772 KB Output is correct
11 Correct 2 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 7972 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 3 ms 7772 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7772 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct
21 Correct 2 ms 7988 KB Output is correct
22 Correct 3 ms 7768 KB Output is correct
23 Correct 2 ms 7772 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 4 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 7768 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 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 2 ms 7772 KB Output is correct
11 Correct 2 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 7972 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 3 ms 7772 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7772 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct
21 Correct 2 ms 7988 KB Output is correct
22 Correct 3 ms 7768 KB Output is correct
23 Correct 2 ms 7772 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 4 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 3 ms 7772 KB Output is correct
31 Correct 4 ms 7772 KB Output is correct
32 Correct 3 ms 7772 KB Output is correct
33 Correct 2 ms 7772 KB Output is correct
34 Correct 3 ms 7768 KB Output is correct
35 Correct 5 ms 7772 KB Output is correct
36 Correct 4 ms 7772 KB Output is correct
37 Correct 3 ms 7772 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7768 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 3 ms 7772 KB Output is correct
7 Correct 3 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 2 ms 7772 KB Output is correct
11 Correct 2 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 7972 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 3 ms 7772 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7772 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct
21 Correct 2 ms 7988 KB Output is correct
22 Correct 3 ms 7768 KB Output is correct
23 Correct 2 ms 7772 KB Output is correct
24 Correct 2 ms 7772 KB Output is correct
25 Correct 4 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 3 ms 7772 KB Output is correct
31 Correct 4 ms 7772 KB Output is correct
32 Correct 3 ms 7772 KB Output is correct
33 Correct 2 ms 7772 KB Output is correct
34 Correct 3 ms 7768 KB Output is correct
35 Correct 5 ms 7772 KB Output is correct
36 Correct 4 ms 7772 KB Output is correct
37 Correct 3 ms 7772 KB Output is correct
38 Correct 56 ms 8540 KB Output is correct
39 Correct 34 ms 25424 KB Output is correct
40 Correct 65 ms 8284 KB Output is correct
41 Correct 72 ms 8024 KB Output is correct
42 Correct 64 ms 8376 KB Output is correct
43 Correct 26 ms 8336 KB Output is correct
44 Correct 29 ms 8028 KB Output is correct
45 Correct 44 ms 18092 KB Output is correct
46 Correct 49 ms 18000 KB Output is correct
47 Correct 65 ms 21700 KB Output is correct
48 Correct 44 ms 21804 KB Output is correct
49 Correct 50 ms 18168 KB Output is correct
50 Correct 45 ms 18000 KB Output is correct
51 Correct 40 ms 19272 KB Output is correct
52 Correct 38 ms 19292 KB Output is correct
53 Correct 37 ms 8072 KB Output is correct
54 Correct 71 ms 18044 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 7772 KB Output is correct
5 Correct 6 ms 7984 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 2 ms 7996 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 8004 KB Output is correct
13 Correct 29 ms 7968 KB Output is correct
14 Correct 33 ms 7772 KB Output is correct
15 Correct 33 ms 7972 KB Output is correct
16 Correct 1269 ms 18248 KB Output is correct
17 Execution timed out 5055 ms 18284 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7772 KB Output is correct
2 Correct 1 ms 7772 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 10 ms 7772 KB Output is correct
5 Correct 18 ms 7768 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 2 ms 7772 KB Output is correct
8 Correct 3 ms 7768 KB Output is correct
9 Correct 38 ms 8540 KB Output is correct
10 Correct 37 ms 25556 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 33 ms 7992 KB Output is correct
13 Execution timed out 5070 ms 25356 KB Time limit exceeded
14 Halted 0 ms 0 KB -