oj.uz

답안 #884992

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
884992 2023-12-08T18:53:03 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) {
	instack[i] = 1;
	bool ok = 1;
	for (int j = 0; j < m; j++) {
		if (j == i) continue;
		if (vis[j]) continue;
		bool gud = 0;
		gud |= st[a[i].lca] <= st[a[j].s] && st[a[j].s] <= st[a[i].s] && en[a[j].s] >= st[a[i].s];
		gud |= st[a[i].lca] <= st[a[j].s] && st[a[j].s] <= st[a[i].e] && en[a[j].s] >= st[a[i].e];	
		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 (!dfs2(j)) {
				ok = 0;
				break;
			}
		}
	}
	instack[i] = 0;
	vis[i] = 1;
	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

# 결과 실행 시간 메모리 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 11 ms 7996 KB Output is correct
5 Correct 18 ms 7772 KB Output is correct
6 Correct 2 ms 8020 KB Output is correct
7 Correct 2 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 29 ms 8552 KB Output is correct
10 Correct 36 ms 25512 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 26 ms 7772 KB Output is correct
13 Correct 4480 ms 25552 KB Output is correct
14 Execution timed out 5067 ms 25372 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 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 2 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 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

# 결과 실행 시간 메모리 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 2 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 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 7768 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 3 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 3 ms 7996 KB Output is correct
22 Correct 3 ms 7772 KB Output is correct
23 Correct 2 ms 7772 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 7816 KB Output is correct
28 Correct 2 ms 7772 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 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 2 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 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 7768 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 3 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 3 ms 7996 KB Output is correct
22 Correct 3 ms 7772 KB Output is correct
23 Correct 2 ms 7772 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 7816 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 3 ms 7768 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 7772 KB Output is correct
35 Correct 4 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

# 결과 실행 시간 메모리 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 2 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 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 7768 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 3 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 3 ms 7996 KB Output is correct
22 Correct 3 ms 7772 KB Output is correct
23 Correct 2 ms 7772 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 7816 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 3 ms 7768 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 7772 KB Output is correct
35 Correct 4 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 33 ms 8540 KB Output is correct
39 Correct 33 ms 25436 KB Output is correct
40 Correct 45 ms 8276 KB Output is correct
41 Correct 53 ms 8224 KB Output is correct
42 Correct 49 ms 8588 KB Output is correct
43 Correct 22 ms 8344 KB Output is correct
44 Correct 19 ms 8028 KB Output is correct
45 Correct 42 ms 18084 KB Output is correct
46 Correct 57 ms 18008 KB Output is correct
47 Correct 38 ms 21588 KB Output is correct
48 Correct 38 ms 21740 KB Output is correct
49 Correct 41 ms 18240 KB Output is correct
50 Correct 39 ms 18172 KB Output is correct
51 Correct 35 ms 19292 KB Output is correct
52 Correct 35 ms 19164 KB Output is correct
53 Correct 30 ms 8272 KB Output is correct
54 Correct 58 ms 17884 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 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 1 ms 7772 KB Output is correct
5 Correct 6 ms 7772 KB Output is correct
6 Correct 2 ms 7772 KB Output is correct
7 Correct 2 ms 7772 KB Output is correct
8 Correct 2 ms 7768 KB Output is correct
9 Correct 2 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 4 ms 7772 KB Output is correct
13 Correct 22 ms 7772 KB Output is correct
14 Correct 30 ms 7772 KB Output is correct
15 Correct 25 ms 7768 KB Output is correct
16 Correct 806 ms 18244 KB Output is correct
17 Execution timed out 5047 ms 18292 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 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 11 ms 7996 KB Output is correct
5 Correct 18 ms 7772 KB Output is correct
6 Correct 2 ms 8020 KB Output is correct
7 Correct 2 ms 7772 KB Output is correct
8 Correct 3 ms 7772 KB Output is correct
9 Correct 29 ms 8552 KB Output is correct
10 Correct 36 ms 25512 KB Output is correct
11 Correct 6 ms 7768 KB Output is correct
12 Correct 26 ms 7772 KB Output is correct
13 Correct 4480 ms 25552 KB Output is correct
14 Execution timed out 5067 ms 25372 KB Time limit exceeded
15 Halted 0 ms 0 KB -