oj.uz

Submission #695318

# Submission time Handle Problem Language Result Execution time Memory
695318 2023-02-05T01:33:13 Z GusterGoose27 Jail (JOI22_jail) C++11
66 / 100
 1730 ms 20736 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

const int MAXN = 12e4;
const int BITS = 17;

vector<int> edges[MAXN];
bool adj[500][500];
int n, m;
pii queries[MAXN];
int lca[MAXN][BITS];
int depth[MAXN];
vector<int> order;
bool vis[500];

class query {
public:
	int l, r;
	bool f;
	query(int l, int r, bool f) : l(l), r(r), f(f) {}
};

bool operator<(query &a, query &b) {
	return (a.l == b.l) ? (a.r > b.r) : (a.l < b.l); 
}

void dfs(int cur = 0, int p = -1) {
	for (int nxt: edges[cur]) {
		if (nxt == p) continue;
		depth[nxt] = depth[cur]+1;
		lca[nxt][0] = cur;
		dfs(nxt, cur);
	}
}

int get_lca(int x, int y) {
	if (depth[x] < depth[y]) swap(x, y);
	int diff = depth[x]-depth[y];
	int p = 0;
	while (diff) {
		if (diff & 1) x = lca[x][p];
		diff /= 2;
		p++;
	}
	if (x == y) return x;
	for (int i = 16; i >= 0; i--) {
		if (lca[x][i] != lca[y][i]) {
			x = lca[x][i];
			y = lca[y][i];
		}
	}
	return lca[x][0];
}

int dist(int x, int y) {
	return depth[x]+depth[y]-2*depth[get_lca(x, y)];
}

bool on_seg(int a, int b, int c) {
	return dist(a, b) == dist(a, c)+dist(b, c);
}

void dfs2(int cur) {
	vis[cur] = 1;
	for (int i = 0; i < m; i++) {
		if (!vis[i] && adj[cur][i]) dfs2(i);
	}
	order.push_back(cur);
}

int main() {
	int t; cin >> t;
	while (t--) {
		bool s1 = 1;
		cin >> n;
		for (int i = 0; i < n; i++) edges[i].clear();
		for (int i = 0; i < n-1; i++) {
			int x, y; cin >> x >> y;
			x--; y--;
			edges[x].push_back(y);
			edges[y].push_back(x);
			if (y-x != 1) s1 = 0;
		}
		cin >> m;
		for (int i = 0; i < m; i++) {
			int x, y; cin >> x >> y;
			queries[i] = pii(x-1, y-1);
		}
		if (s1) {
			vector<query> sorted;
			for (int i = 0; i < m; i++) {
				if (queries[i].first > queries[i].second) sorted.push_back(query(queries[i].second, queries[i].first, 1));
				else sorted.push_back(query(queries[i].first, queries[i].second, 0));
			}
			sort(sorted.begin(), sorted.end());
			int r[2];
			r[0] = r[1] = -1;
			bool ans = 1;
			for (query q: sorted) {
				if (r[q.f] >= q.r || r[!q.f] >= q.l) {
					ans = 0;
					break;
				}
				r[q.f] = q.r;
			}
			if (ans) {
				cout << "Yes\n";
			}
			else cout << "No\n";
		}
		else if (m <= 500) {
			dfs();
			for (int i = 1; i < BITS; i++) {
				for (int j = 0; j < n; j++) {
					lca[j][i] = lca[lca[j][i-1]][i-1];
				}
			}
			for (int i = 0; i < m; i++) fill(adj[i], adj[i]+m, 0);
			for (int i = 0; i < m; i++) {
				for (int j = 0; j < m; j++) {
					if (i == j) continue;
					adj[i][j] = (on_seg(queries[i].first, queries[i].second, queries[j].first) || on_seg(queries[j].first, queries[j].second, queries[i].second));
				}
			}
			if (m == 2) {
				if (adj[0][1] && adj[1][0]) cout << "No\n";
				else cout << "Yes\n";
				continue;
			}
			fill(vis, vis+m, 0);
			order.clear();
			for (int i = 0; i < m; i++) {
				if (!vis[i]) dfs2(i);
			}
			bool ans = 1;
			for (int i = 0; i < m && ans; i++) {
				for (int j = i+1; j < m && ans; j++) {
					if (adj[order[i]][order[j]]) ans = 0;
				}
			}
			if (ans) cout << "Yes\n";
			else cout << "No\n";
		}
		else {
			srand(0);
			if (rand()%2) cout << "Yes\n";
			else cout << "No\n";
		}
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3028 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3028 KB Output is correct
4 Correct 27 ms 3028 KB Output is correct
5 Correct 45 ms 3028 KB Output is correct
6 Correct 3 ms 3028 KB Output is correct
7 Correct 3 ms 3028 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 57 ms 3244 KB Output is correct
10 Correct 69 ms 6856 KB Output is correct
11 Correct 11 ms 3028 KB Output is correct
12 Correct 56 ms 3028 KB Output is correct
13 Correct 95 ms 8108 KB Output is correct
14 Correct 96 ms 8100 KB Output is correct
15 Correct 98 ms 8088 KB Output is correct
16 Correct 139 ms 9412 KB Output is correct
17 Correct 109 ms 8236 KB Output is correct
18 Correct 137 ms 9500 KB Output is correct
19 Correct 101 ms 8256 KB Output is correct
20 Correct 100 ms 8208 KB Output is correct
21 Correct 101 ms 8148 KB Output is correct
22 Correct 102 ms 8140 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 1 ms 3028 KB Output is correct
3 Correct 4 ms 3028 KB Output is correct
4 Correct 4 ms 3156 KB Output is correct
5 Correct 4 ms 3204 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 4 ms 3156 KB Output is correct
8 Correct 4 ms 3136 KB Output is correct
9 Correct 4 ms 3156 KB Output is correct
10 Correct 3 ms 3156 KB Output is correct
11 Correct 3 ms 3156 KB Output is correct
12 Correct 3 ms 3156 KB Output is correct
13 Correct 3 ms 3156 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 1 ms 3028 KB Output is correct
3 Correct 4 ms 3028 KB Output is correct
4 Correct 4 ms 3156 KB Output is correct
5 Correct 4 ms 3204 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 4 ms 3156 KB Output is correct
8 Correct 4 ms 3136 KB Output is correct
9 Correct 4 ms 3156 KB Output is correct
10 Correct 3 ms 3156 KB Output is correct
11 Correct 3 ms 3156 KB Output is correct
12 Correct 3 ms 3156 KB Output is correct
13 Correct 3 ms 3156 KB Output is correct
14 Correct 2 ms 3028 KB Output is correct
15 Correct 2 ms 3028 KB Output is correct
16 Correct 4 ms 3156 KB Output is correct
17 Correct 4 ms 3132 KB Output is correct
18 Correct 5 ms 3136 KB Output is correct
19 Correct 2 ms 3028 KB Output is correct
20 Correct 4 ms 3156 KB Output is correct
21 Correct 4 ms 3156 KB Output is correct
22 Correct 4 ms 3156 KB Output is correct
23 Correct 2 ms 3028 KB Output is correct
24 Correct 2 ms 3156 KB Output is correct
25 Correct 4 ms 3156 KB Output is correct
26 Correct 2 ms 3156 KB Output is correct
27 Correct 4 ms 3156 KB Output is correct
28 Correct 2 ms 3028 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 1 ms 3028 KB Output is correct
3 Correct 4 ms 3028 KB Output is correct
4 Correct 4 ms 3156 KB Output is correct
5 Correct 4 ms 3204 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 4 ms 3156 KB Output is correct
8 Correct 4 ms 3136 KB Output is correct
9 Correct 4 ms 3156 KB Output is correct
10 Correct 3 ms 3156 KB Output is correct
11 Correct 3 ms 3156 KB Output is correct
12 Correct 3 ms 3156 KB Output is correct
13 Correct 3 ms 3156 KB Output is correct
14 Correct 2 ms 3028 KB Output is correct
15 Correct 2 ms 3028 KB Output is correct
16 Correct 4 ms 3156 KB Output is correct
17 Correct 4 ms 3132 KB Output is correct
18 Correct 5 ms 3136 KB Output is correct
19 Correct 2 ms 3028 KB Output is correct
20 Correct 4 ms 3156 KB Output is correct
21 Correct 4 ms 3156 KB Output is correct
22 Correct 4 ms 3156 KB Output is correct
23 Correct 2 ms 3028 KB Output is correct
24 Correct 2 ms 3156 KB Output is correct
25 Correct 4 ms 3156 KB Output is correct
26 Correct 2 ms 3156 KB Output is correct
27 Correct 4 ms 3156 KB Output is correct
28 Correct 2 ms 3028 KB Output is correct
29 Correct 4 ms 3156 KB Output is correct
30 Correct 27 ms 3264 KB Output is correct
31 Correct 25 ms 3156 KB Output is correct
32 Correct 18 ms 3156 KB Output is correct
33 Correct 7 ms 3156 KB Output is correct
34 Correct 49 ms 3156 KB Output is correct
35 Correct 60 ms 3156 KB Output is correct
36 Correct 38 ms 3156 KB Output is correct
37 Correct 31 ms 3136 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 1 ms 3028 KB Output is correct
3 Correct 4 ms 3028 KB Output is correct
4 Correct 4 ms 3156 KB Output is correct
5 Correct 4 ms 3204 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 4 ms 3156 KB Output is correct
8 Correct 4 ms 3136 KB Output is correct
9 Correct 4 ms 3156 KB Output is correct
10 Correct 3 ms 3156 KB Output is correct
11 Correct 3 ms 3156 KB Output is correct
12 Correct 3 ms 3156 KB Output is correct
13 Correct 3 ms 3156 KB Output is correct
14 Correct 2 ms 3028 KB Output is correct
15 Correct 2 ms 3028 KB Output is correct
16 Correct 4 ms 3156 KB Output is correct
17 Correct 4 ms 3132 KB Output is correct
18 Correct 5 ms 3136 KB Output is correct
19 Correct 2 ms 3028 KB Output is correct
20 Correct 4 ms 3156 KB Output is correct
21 Correct 4 ms 3156 KB Output is correct
22 Correct 4 ms 3156 KB Output is correct
23 Correct 2 ms 3028 KB Output is correct
24 Correct 2 ms 3156 KB Output is correct
25 Correct 4 ms 3156 KB Output is correct
26 Correct 2 ms 3156 KB Output is correct
27 Correct 4 ms 3156 KB Output is correct
28 Correct 2 ms 3028 KB Output is correct
29 Correct 4 ms 3156 KB Output is correct
30 Correct 27 ms 3264 KB Output is correct
31 Correct 25 ms 3156 KB Output is correct
32 Correct 18 ms 3156 KB Output is correct
33 Correct 7 ms 3156 KB Output is correct
34 Correct 49 ms 3156 KB Output is correct
35 Correct 60 ms 3156 KB Output is correct
36 Correct 38 ms 3156 KB Output is correct
37 Correct 31 ms 3136 KB Output is correct
38 Correct 58 ms 4460 KB Output is correct
39 Correct 71 ms 8292 KB Output is correct
40 Correct 1730 ms 5380 KB Output is correct
41 Correct 1509 ms 5328 KB Output is correct
42 Correct 1167 ms 5576 KB Output is correct
43 Correct 77 ms 5060 KB Output is correct
44 Correct 1010 ms 3640 KB Output is correct
45 Correct 249 ms 17032 KB Output is correct
46 Correct 250 ms 17032 KB Output is correct
47 Correct 282 ms 20736 KB Output is correct
48 Correct 269 ms 20712 KB Output is correct
49 Correct 264 ms 17132 KB Output is correct
50 Correct 271 ms 17192 KB Output is correct
51 Correct 108 ms 18092 KB Output is correct
52 Correct 112 ms 18132 KB Output is correct
53 Correct 842 ms 4636 KB Output is correct
54 Correct 196 ms 16996 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 1 ms 3028 KB Output is correct
3 Correct 2 ms 3120 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 12 ms 3156 KB Output is correct
6 Correct 3 ms 3156 KB Output is correct
7 Correct 3 ms 3136 KB Output is correct
8 Correct 2 ms 3028 KB Output is correct
9 Correct 2 ms 3028 KB Output is correct
10 Correct 2 ms 3120 KB Output is correct
11 Correct 2 ms 3028 KB Output is correct
12 Correct 39 ms 3156 KB Output is correct
13 Correct 487 ms 3688 KB Output is correct
14 Correct 258 ms 3916 KB Output is correct
15 Correct 372 ms 3792 KB Output is correct
16 Incorrect 80 ms 8548 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3028 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3028 KB Output is correct
4 Correct 27 ms 3028 KB Output is correct
5 Correct 45 ms 3028 KB Output is correct
6 Correct 3 ms 3028 KB Output is correct
7 Correct 3 ms 3028 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 57 ms 3244 KB Output is correct
10 Correct 69 ms 6856 KB Output is correct
11 Correct 11 ms 3028 KB Output is correct
12 Correct 56 ms 3028 KB Output is correct
13 Correct 95 ms 8108 KB Output is correct
14 Correct 96 ms 8100 KB Output is correct
15 Correct 98 ms 8088 KB Output is correct
16 Correct 139 ms 9412 KB Output is correct
17 Correct 109 ms 8236 KB Output is correct
18 Correct 137 ms 9500 KB Output is correct
19 Correct 101 ms 8256 KB Output is correct
20 Correct 100 ms 8208 KB Output is correct
21 Correct 101 ms 8148 KB Output is correct
22 Correct 102 ms 8140 KB Output is correct
23 Correct 2 ms 3028 KB Output is correct
24 Correct 1 ms 3028 KB Output is correct
25 Correct 4 ms 3028 KB Output is correct
26 Correct 4 ms 3156 KB Output is correct
27 Correct 4 ms 3204 KB Output is correct
28 Correct 4 ms 3156 KB Output is correct
29 Correct 4 ms 3156 KB Output is correct
30 Correct 4 ms 3136 KB Output is correct
31 Correct 4 ms 3156 KB Output is correct
32 Correct 3 ms 3156 KB Output is correct
33 Correct 3 ms 3156 KB Output is correct
34 Correct 3 ms 3156 KB Output is correct
35 Correct 3 ms 3156 KB Output is correct
36 Correct 2 ms 3028 KB Output is correct
37 Correct 2 ms 3028 KB Output is correct
38 Correct 4 ms 3156 KB Output is correct
39 Correct 4 ms 3132 KB Output is correct
40 Correct 5 ms 3136 KB Output is correct
41 Correct 2 ms 3028 KB Output is correct
42 Correct 4 ms 3156 KB Output is correct
43 Correct 4 ms 3156 KB Output is correct
44 Correct 4 ms 3156 KB Output is correct
45 Correct 2 ms 3028 KB Output is correct
46 Correct 2 ms 3156 KB Output is correct
47 Correct 4 ms 3156 KB Output is correct
48 Correct 2 ms 3156 KB Output is correct
49 Correct 4 ms 3156 KB Output is correct
50 Correct 2 ms 3028 KB Output is correct
51 Correct 4 ms 3156 KB Output is correct
52 Correct 27 ms 3264 KB Output is correct
53 Correct 25 ms 3156 KB Output is correct
54 Correct 18 ms 3156 KB Output is correct
55 Correct 7 ms 3156 KB Output is correct
56 Correct 49 ms 3156 KB Output is correct
57 Correct 60 ms 3156 KB Output is correct
58 Correct 38 ms 3156 KB Output is correct
59 Correct 31 ms 3136 KB Output is correct
60 Correct 58 ms 4460 KB Output is correct
61 Correct 71 ms 8292 KB Output is correct
62 Correct 1730 ms 5380 KB Output is correct
63 Correct 1509 ms 5328 KB Output is correct
64 Correct 1167 ms 5576 KB Output is correct
65 Correct 77 ms 5060 KB Output is correct
66 Correct 1010 ms 3640 KB Output is correct
67 Correct 249 ms 17032 KB Output is correct
68 Correct 250 ms 17032 KB Output is correct
69 Correct 282 ms 20736 KB Output is correct
70 Correct 269 ms 20712 KB Output is correct
71 Correct 264 ms 17132 KB Output is correct
72 Correct 271 ms 17192 KB Output is correct
73 Correct 108 ms 18092 KB Output is correct
74 Correct 112 ms 18132 KB Output is correct
75 Correct 842 ms 4636 KB Output is correct
76 Correct 196 ms 16996 KB Output is correct
77 Correct 2 ms 3028 KB Output is correct
78 Correct 1 ms 3028 KB Output is correct
79 Correct 2 ms 3120 KB Output is correct
80 Correct 2 ms 3028 KB Output is correct
81 Correct 12 ms 3156 KB Output is correct
82 Correct 3 ms 3156 KB Output is correct
83 Correct 3 ms 3136 KB Output is correct
84 Correct 2 ms 3028 KB Output is correct
85 Correct 2 ms 3028 KB Output is correct
86 Correct 2 ms 3120 KB Output is correct
87 Correct 2 ms 3028 KB Output is correct
88 Correct 39 ms 3156 KB Output is correct
89 Correct 487 ms 3688 KB Output is correct
90 Correct 258 ms 3916 KB Output is correct
91 Correct 372 ms 3792 KB Output is correct
92 Incorrect 80 ms 8548 KB Output isn't correct
93 Halted 0 ms 0 KB -