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Submission #636072

# Submission time Handle Problem Language Result Execution time Memory
636072 2022-08-27T23:08:56 Z pedroslrey Birthday gift (IZhO18_treearray) C++17
56 / 100
 4000 ms 70412 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 2e5 + 10;
const int MAXK = 20;

vector<int> graph[MAXN];
int dp[MAXN][MAXK];
int as[MAXN], prof[MAXN];
set<int> pos[MAXN], pos_lca[MAXN];

void dfs(int u, int p) {
	for (int v: graph[u]) {
		if (v == p) continue;

		prof[v] = prof[u] + 1;
		dp[v][0] = u;
		for (int k = 1; k < MAXK; ++k)
			dp[v][k] = dp[dp[v][k-1]][k-1];

		dfs(v, u);
	}
}

int lca(int a, int b) {
	if (prof[a] > prof[b]) swap(a, b);

	int d = prof[b] - prof[a];
	for (int k = 0; k < MAXK; ++k)
		if (d & (1 << k)) b = dp[b][k];

	if (a == b) return a;

	for (int k = MAXK - 1; k >= 0; --k)
		if (dp[a][k] != dp[b][k]) {
			a = dp[a][k];
			b = dp[b][k];
		}

	return dp[a][0];
}

int main() {
	int n, m, q;
	cin >> n >> m >> q;

	for (int i = 0; i < n-1; ++i) {
		int u, v;
		cin >> u >> v;

		graph[u].push_back(v);
		graph[v].push_back(u);
	}

	dfs(1, 1);

	for (int i = 1; i <= m; ++i)
		cin >> as[i];

	for (int i = 1; i <= m; ++i) {
		pos[as[i]].insert(i);
		if (i < m) 
			pos_lca[lca(as[i], as[i+1])].insert(i);
	}

	for (int qq = 0; qq < q; ++qq) {
		int t;
		cin >> t;

		if (t == 1) {
			int i, v;
			cin >> i >> v;

			pos[as[i]].erase(i);
			if (i > 1) pos_lca[lca(as[i-1], as[i])].erase(i-1);
			if (i < m) pos_lca[lca(as[i], as[i+1])].erase(i);

			as[i] = v;

			pos[as[i]].insert(i);
			if (i > 1) pos_lca[lca(as[i-1], as[i])].insert(i-1);
			if (i < m) pos_lca[lca(as[i], as[i+1])].insert(i);
		}
		else {
			int l, r, v;
			cin >> l >> r >> v;
			auto b = lower_bound(pos[v].begin(), pos[v].end(), l);
			auto e = upper_bound(pos[v].begin(), pos[v].end(), r);

			if (b != e) {
				cout << *b << " " << *b << "\n";
				continue;
			}

			auto blca = lower_bound(pos_lca[v].begin(), pos_lca[v].end(), l);
			auto elca = upper_bound(pos_lca[v].begin(), pos_lca[v].end(), r);

			if (blca != elca && *blca + 1 <= r) {
				cout << *blca << " " << *blca + 1 << "\n";
				continue;
			}
			cout << "-1 -1\n";
		}
	}
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23792 KB n=5
2 Correct 12 ms 23792 KB n=100
3 Correct 12 ms 23816 KB n=100
4 Correct 12 ms 23764 KB n=100
5 Correct 14 ms 23800 KB n=100
6 Correct 13 ms 23800 KB n=100
7 Correct 15 ms 23780 KB n=100
8 Correct 13 ms 23792 KB n=100
9 Correct 13 ms 23744 KB n=100
10 Correct 12 ms 23724 KB n=100
11 Correct 12 ms 23764 KB n=100
12 Correct 13 ms 23876 KB n=100
13 Correct 11 ms 23764 KB n=100
14 Correct 12 ms 23820 KB n=100
15 Correct 12 ms 23764 KB n=100
16 Correct 12 ms 23764 KB n=100
17 Correct 12 ms 23764 KB n=100
18 Correct 12 ms 23764 KB n=100
19 Correct 12 ms 23744 KB n=100
20 Correct 12 ms 23764 KB n=100
21 Correct 12 ms 23764 KB n=100
22 Correct 15 ms 23764 KB n=100
23 Correct 13 ms 23724 KB n=100
24 Correct 12 ms 23764 KB n=100
25 Correct 12 ms 23764 KB n=100
26 Correct 12 ms 23792 KB n=12
27 Correct 13 ms 23792 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23792 KB n=5
2 Correct 12 ms 23792 KB n=100
3 Correct 12 ms 23816 KB n=100
4 Correct 12 ms 23764 KB n=100
5 Correct 14 ms 23800 KB n=100
6 Correct 13 ms 23800 KB n=100
7 Correct 15 ms 23780 KB n=100
8 Correct 13 ms 23792 KB n=100
9 Correct 13 ms 23744 KB n=100
10 Correct 12 ms 23724 KB n=100
11 Correct 12 ms 23764 KB n=100
12 Correct 13 ms 23876 KB n=100
13 Correct 11 ms 23764 KB n=100
14 Correct 12 ms 23820 KB n=100
15 Correct 12 ms 23764 KB n=100
16 Correct 12 ms 23764 KB n=100
17 Correct 12 ms 23764 KB n=100
18 Correct 12 ms 23764 KB n=100
19 Correct 12 ms 23744 KB n=100
20 Correct 12 ms 23764 KB n=100
21 Correct 12 ms 23764 KB n=100
22 Correct 15 ms 23764 KB n=100
23 Correct 13 ms 23724 KB n=100
24 Correct 12 ms 23764 KB n=100
25 Correct 12 ms 23764 KB n=100
26 Correct 12 ms 23792 KB n=12
27 Correct 13 ms 23792 KB n=100
28 Correct 18 ms 23824 KB n=500
29 Correct 13 ms 23892 KB n=500
30 Correct 13 ms 23892 KB n=500
31 Correct 14 ms 23892 KB n=500
32 Correct 16 ms 23892 KB n=500
33 Correct 14 ms 23880 KB n=500
34 Correct 16 ms 23892 KB n=500
35 Correct 14 ms 23940 KB n=500
36 Correct 14 ms 23876 KB n=500
37 Correct 13 ms 23892 KB n=500
38 Correct 17 ms 23892 KB n=500
39 Correct 18 ms 23908 KB n=500
40 Correct 14 ms 23892 KB n=500
41 Correct 13 ms 23892 KB n=500
42 Correct 13 ms 23892 KB n=500
43 Correct 13 ms 23804 KB n=500
44 Correct 14 ms 23872 KB n=500
45 Correct 13 ms 23892 KB n=500
46 Correct 13 ms 23948 KB n=500
47 Correct 14 ms 23892 KB n=500
48 Correct 15 ms 23804 KB n=500
49 Correct 13 ms 23864 KB n=500
50 Correct 14 ms 23872 KB n=500
51 Correct 17 ms 23936 KB n=500
52 Correct 14 ms 23892 KB n=500
53 Correct 13 ms 23828 KB n=500
54 Correct 13 ms 23924 KB n=500
55 Correct 14 ms 23892 KB n=278
56 Correct 17 ms 24048 KB n=500
57 Correct 14 ms 23852 KB n=500
58 Correct 14 ms 23892 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23792 KB n=5
2 Correct 12 ms 23792 KB n=100
3 Correct 12 ms 23816 KB n=100
4 Correct 12 ms 23764 KB n=100
5 Correct 14 ms 23800 KB n=100
6 Correct 13 ms 23800 KB n=100
7 Correct 15 ms 23780 KB n=100
8 Correct 13 ms 23792 KB n=100
9 Correct 13 ms 23744 KB n=100
10 Correct 12 ms 23724 KB n=100
11 Correct 12 ms 23764 KB n=100
12 Correct 13 ms 23876 KB n=100
13 Correct 11 ms 23764 KB n=100
14 Correct 12 ms 23820 KB n=100
15 Correct 12 ms 23764 KB n=100
16 Correct 12 ms 23764 KB n=100
17 Correct 12 ms 23764 KB n=100
18 Correct 12 ms 23764 KB n=100
19 Correct 12 ms 23744 KB n=100
20 Correct 12 ms 23764 KB n=100
21 Correct 12 ms 23764 KB n=100
22 Correct 15 ms 23764 KB n=100
23 Correct 13 ms 23724 KB n=100
24 Correct 12 ms 23764 KB n=100
25 Correct 12 ms 23764 KB n=100
26 Correct 12 ms 23792 KB n=12
27 Correct 13 ms 23792 KB n=100
28 Correct 18 ms 23824 KB n=500
29 Correct 13 ms 23892 KB n=500
30 Correct 13 ms 23892 KB n=500
31 Correct 14 ms 23892 KB n=500
32 Correct 16 ms 23892 KB n=500
33 Correct 14 ms 23880 KB n=500
34 Correct 16 ms 23892 KB n=500
35 Correct 14 ms 23940 KB n=500
36 Correct 14 ms 23876 KB n=500
37 Correct 13 ms 23892 KB n=500
38 Correct 17 ms 23892 KB n=500
39 Correct 18 ms 23908 KB n=500
40 Correct 14 ms 23892 KB n=500
41 Correct 13 ms 23892 KB n=500
42 Correct 13 ms 23892 KB n=500
43 Correct 13 ms 23804 KB n=500
44 Correct 14 ms 23872 KB n=500
45 Correct 13 ms 23892 KB n=500
46 Correct 13 ms 23948 KB n=500
47 Correct 14 ms 23892 KB n=500
48 Correct 15 ms 23804 KB n=500
49 Correct 13 ms 23864 KB n=500
50 Correct 14 ms 23872 KB n=500
51 Correct 17 ms 23936 KB n=500
52 Correct 14 ms 23892 KB n=500
53 Correct 13 ms 23828 KB n=500
54 Correct 13 ms 23924 KB n=500
55 Correct 14 ms 23892 KB n=278
56 Correct 17 ms 24048 KB n=500
57 Correct 14 ms 23852 KB n=500
58 Correct 14 ms 23892 KB n=500
59 Correct 53 ms 24296 KB n=2000
60 Correct 20 ms 24324 KB n=2000
61 Correct 20 ms 24276 KB n=2000
62 Correct 20 ms 24276 KB n=2000
63 Correct 73 ms 24248 KB n=2000
64 Correct 19 ms 24312 KB n=2000
65 Correct 69 ms 24276 KB n=2000
66 Correct 18 ms 24276 KB n=2000
67 Correct 42 ms 24288 KB n=2000
68 Correct 18 ms 24276 KB n=2000
69 Correct 20 ms 24196 KB n=2000
70 Correct 19 ms 24276 KB n=2000
71 Correct 21 ms 24276 KB n=2000
72 Correct 18 ms 24252 KB n=2000
73 Correct 18 ms 24264 KB n=2000
74 Correct 47 ms 24188 KB n=1844
75 Correct 22 ms 24284 KB n=2000
76 Correct 17 ms 24276 KB n=2000
77 Correct 20 ms 24276 KB n=2000
78 Correct 19 ms 24276 KB n=2000
79 Correct 36 ms 24276 KB n=2000
80 Correct 18 ms 24312 KB n=2000
81 Correct 18 ms 24276 KB n=2000
82 Correct 42 ms 24196 KB n=2000
83 Correct 18 ms 24320 KB n=2000
84 Correct 19 ms 24276 KB n=2000
85 Correct 19 ms 24280 KB n=2000
86 Correct 18 ms 24220 KB n=2000
87 Correct 18 ms 24268 KB n=2000
88 Correct 18 ms 24428 KB n=2000
89 Correct 19 ms 24404 KB n=2000
90 Correct 18 ms 24404 KB n=2000
91 Correct 19 ms 24276 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23792 KB n=5
2 Correct 12 ms 23792 KB n=100
3 Correct 12 ms 23816 KB n=100
4 Correct 12 ms 23764 KB n=100
5 Correct 14 ms 23800 KB n=100
6 Correct 13 ms 23800 KB n=100
7 Correct 15 ms 23780 KB n=100
8 Correct 13 ms 23792 KB n=100
9 Correct 13 ms 23744 KB n=100
10 Correct 12 ms 23724 KB n=100
11 Correct 12 ms 23764 KB n=100
12 Correct 13 ms 23876 KB n=100
13 Correct 11 ms 23764 KB n=100
14 Correct 12 ms 23820 KB n=100
15 Correct 12 ms 23764 KB n=100
16 Correct 12 ms 23764 KB n=100
17 Correct 12 ms 23764 KB n=100
18 Correct 12 ms 23764 KB n=100
19 Correct 12 ms 23744 KB n=100
20 Correct 12 ms 23764 KB n=100
21 Correct 12 ms 23764 KB n=100
22 Correct 15 ms 23764 KB n=100
23 Correct 13 ms 23724 KB n=100
24 Correct 12 ms 23764 KB n=100
25 Correct 12 ms 23764 KB n=100
26 Correct 12 ms 23792 KB n=12
27 Correct 13 ms 23792 KB n=100
28 Correct 18 ms 23824 KB n=500
29 Correct 13 ms 23892 KB n=500
30 Correct 13 ms 23892 KB n=500
31 Correct 14 ms 23892 KB n=500
32 Correct 16 ms 23892 KB n=500
33 Correct 14 ms 23880 KB n=500
34 Correct 16 ms 23892 KB n=500
35 Correct 14 ms 23940 KB n=500
36 Correct 14 ms 23876 KB n=500
37 Correct 13 ms 23892 KB n=500
38 Correct 17 ms 23892 KB n=500
39 Correct 18 ms 23908 KB n=500
40 Correct 14 ms 23892 KB n=500
41 Correct 13 ms 23892 KB n=500
42 Correct 13 ms 23892 KB n=500
43 Correct 13 ms 23804 KB n=500
44 Correct 14 ms 23872 KB n=500
45 Correct 13 ms 23892 KB n=500
46 Correct 13 ms 23948 KB n=500
47 Correct 14 ms 23892 KB n=500
48 Correct 15 ms 23804 KB n=500
49 Correct 13 ms 23864 KB n=500
50 Correct 14 ms 23872 KB n=500
51 Correct 17 ms 23936 KB n=500
52 Correct 14 ms 23892 KB n=500
53 Correct 13 ms 23828 KB n=500
54 Correct 13 ms 23924 KB n=500
55 Correct 14 ms 23892 KB n=278
56 Correct 17 ms 24048 KB n=500
57 Correct 14 ms 23852 KB n=500
58 Correct 14 ms 23892 KB n=500
59 Correct 53 ms 24296 KB n=2000
60 Correct 20 ms 24324 KB n=2000
61 Correct 20 ms 24276 KB n=2000
62 Correct 20 ms 24276 KB n=2000
63 Correct 73 ms 24248 KB n=2000
64 Correct 19 ms 24312 KB n=2000
65 Correct 69 ms 24276 KB n=2000
66 Correct 18 ms 24276 KB n=2000
67 Correct 42 ms 24288 KB n=2000
68 Correct 18 ms 24276 KB n=2000
69 Correct 20 ms 24196 KB n=2000
70 Correct 19 ms 24276 KB n=2000
71 Correct 21 ms 24276 KB n=2000
72 Correct 18 ms 24252 KB n=2000
73 Correct 18 ms 24264 KB n=2000
74 Correct 47 ms 24188 KB n=1844
75 Correct 22 ms 24284 KB n=2000
76 Correct 17 ms 24276 KB n=2000
77 Correct 20 ms 24276 KB n=2000
78 Correct 19 ms 24276 KB n=2000
79 Correct 36 ms 24276 KB n=2000
80 Correct 18 ms 24312 KB n=2000
81 Correct 18 ms 24276 KB n=2000
82 Correct 42 ms 24196 KB n=2000
83 Correct 18 ms 24320 KB n=2000
84 Correct 19 ms 24276 KB n=2000
85 Correct 19 ms 24280 KB n=2000
86 Correct 18 ms 24220 KB n=2000
87 Correct 18 ms 24268 KB n=2000
88 Correct 18 ms 24428 KB n=2000
89 Correct 19 ms 24404 KB n=2000
90 Correct 18 ms 24404 KB n=2000
91 Correct 19 ms 24276 KB n=2000
92 Execution timed out 4054 ms 70412 KB Time limit exceeded
93 Halted 0 ms 0 KB -