oj.uz

Submission #1109215

# Submission time Handle Problem Language Result Execution time Memory
1109215 2024-11-06T08:13:08 Z stdfloat Birthday gift (IZhO18_treearray) C++17
56 / 100
 4000 ms 44416 KB 
#include <bits/stdc++.h>
using namespace std;

vector<int> d;

vector<vector<int>> E, sp;

void dfs(int x, int p = -1) {
	sp[x][0] = p;
	if (p != -1) d[x] = d[p] + 1;
	for (auto i : E[x])
		if (i != p) dfs(i, x);
}

int lca(int x, int y) {
	if (d[x] < d[y]) swap(x, y);

	for (int i = 19; i >= 0; i--)
		if (d[x] - (1 << i) >= d[y]) x = sp[x][i];

	if (x == y) return x;

	for (int i = 19; i >= 0; i--) {
		if (sp[x][i] != sp[y][i]) {
			x = sp[x][i]; y = sp[y][i];
		}
	}

	return sp[x][0];
}

int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);

	int n, m, q;
	cin >> n >> m >> q;

	E.assign(n, {});
	for (int i = 1; i < n; i++) {
		int x, y;
		cin >> x >> y; x--; y--;

		E[x].push_back(y);
		E[y].push_back(x);
	}

	d.assign(n, 0);
	sp.assign(n, vector<int>(20, -1));
	dfs(0);

	for (int i = 1; i < 20; i++) {
		for (int j = 0; j < n; j++)
			if (sp[j][i - 1] != -1) sp[j][i] = sp[sp[j][i - 1]][i - 1];
	}

	vector<int> a(m);
	for (auto &i : a) {
		cin >> i; i--;
	}

	while (q--) {
		int tp;
		cin >> tp;

		if (tp == 1) {
			int ps, v;
			cin >> ps >> v; ps--; v--;
		
			a[ps] = v;
		}
		else {
			int l, r, v;
			cin >> l >> r >> v; l--; r--; v--;

			pair<int, int> ans = {-2, -2};
			for (int i = l; i <= r; i++) {
				if (a[i] == v) {
					ans = {i, i};
					break;
				}

				if (i != r && lca(a[i], a[i + 1]) == v) {
					ans = {i, i + 1};
					break;
				}
			}

			cout << ans.first + 1 << ' ' << ans.second + 1 << '\n';
		}
	}
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=5
2 Correct 1 ms 336 KB n=100
3 Correct 1 ms 336 KB n=100
4 Correct 1 ms 336 KB n=100
5 Correct 1 ms 336 KB n=100
6 Correct 1 ms 336 KB n=100
7 Correct 1 ms 336 KB n=100
8 Correct 1 ms 336 KB n=100
9 Correct 1 ms 336 KB n=100
10 Correct 1 ms 504 KB n=100
11 Correct 1 ms 336 KB n=100
12 Correct 1 ms 336 KB n=100
13 Correct 1 ms 336 KB n=100
14 Correct 1 ms 336 KB n=100
15 Correct 1 ms 336 KB n=100
16 Correct 1 ms 504 KB n=100
17 Correct 1 ms 336 KB n=100
18 Correct 1 ms 336 KB n=100
19 Correct 1 ms 336 KB n=100
20 Correct 1 ms 336 KB n=100
21 Correct 1 ms 504 KB n=100
22 Correct 1 ms 508 KB n=100
23 Correct 1 ms 336 KB n=100
24 Correct 1 ms 336 KB n=100
25 Correct 1 ms 504 KB n=100
26 Correct 1 ms 336 KB n=12
27 Correct 1 ms 336 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=5
2 Correct 1 ms 336 KB n=100
3 Correct 1 ms 336 KB n=100
4 Correct 1 ms 336 KB n=100
5 Correct 1 ms 336 KB n=100
6 Correct 1 ms 336 KB n=100
7 Correct 1 ms 336 KB n=100
8 Correct 1 ms 336 KB n=100
9 Correct 1 ms 336 KB n=100
10 Correct 1 ms 504 KB n=100
11 Correct 1 ms 336 KB n=100
12 Correct 1 ms 336 KB n=100
13 Correct 1 ms 336 KB n=100
14 Correct 1 ms 336 KB n=100
15 Correct 1 ms 336 KB n=100
16 Correct 1 ms 504 KB n=100
17 Correct 1 ms 336 KB n=100
18 Correct 1 ms 336 KB n=100
19 Correct 1 ms 336 KB n=100
20 Correct 1 ms 336 KB n=100
21 Correct 1 ms 504 KB n=100
22 Correct 1 ms 508 KB n=100
23 Correct 1 ms 336 KB n=100
24 Correct 1 ms 336 KB n=100
25 Correct 1 ms 504 KB n=100
26 Correct 1 ms 336 KB n=12
27 Correct 1 ms 336 KB n=100
28 Correct 1 ms 336 KB n=500
29 Correct 2 ms 592 KB n=500
30 Correct 2 ms 504 KB n=500
31 Correct 2 ms 336 KB n=500
32 Correct 1 ms 504 KB n=500
33 Correct 3 ms 336 KB n=500
34 Correct 1 ms 336 KB n=500
35 Correct 3 ms 336 KB n=500
36 Correct 7 ms 336 KB n=500
37 Correct 7 ms 336 KB n=500
38 Correct 7 ms 336 KB n=500
39 Correct 4 ms 336 KB n=500
40 Correct 5 ms 336 KB n=500
41 Correct 6 ms 336 KB n=500
42 Correct 5 ms 336 KB n=500
43 Correct 4 ms 336 KB n=500
44 Correct 6 ms 336 KB n=500
45 Correct 2 ms 504 KB n=500
46 Correct 2 ms 336 KB n=500
47 Correct 2 ms 504 KB n=500
48 Correct 1 ms 336 KB n=500
49 Correct 1 ms 336 KB n=500
50 Correct 4 ms 336 KB n=500
51 Correct 3 ms 336 KB n=500
52 Correct 2 ms 336 KB n=500
53 Correct 2 ms 336 KB n=500
54 Correct 3 ms 344 KB n=500
55 Correct 1 ms 336 KB n=278
56 Correct 4 ms 508 KB n=500
57 Correct 4 ms 584 KB n=500
58 Correct 8 ms 336 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=5
2 Correct 1 ms 336 KB n=100
3 Correct 1 ms 336 KB n=100
4 Correct 1 ms 336 KB n=100
5 Correct 1 ms 336 KB n=100
6 Correct 1 ms 336 KB n=100
7 Correct 1 ms 336 KB n=100
8 Correct 1 ms 336 KB n=100
9 Correct 1 ms 336 KB n=100
10 Correct 1 ms 504 KB n=100
11 Correct 1 ms 336 KB n=100
12 Correct 1 ms 336 KB n=100
13 Correct 1 ms 336 KB n=100
14 Correct 1 ms 336 KB n=100
15 Correct 1 ms 336 KB n=100
16 Correct 1 ms 504 KB n=100
17 Correct 1 ms 336 KB n=100
18 Correct 1 ms 336 KB n=100
19 Correct 1 ms 336 KB n=100
20 Correct 1 ms 336 KB n=100
21 Correct 1 ms 504 KB n=100
22 Correct 1 ms 508 KB n=100
23 Correct 1 ms 336 KB n=100
24 Correct 1 ms 336 KB n=100
25 Correct 1 ms 504 KB n=100
26 Correct 1 ms 336 KB n=12
27 Correct 1 ms 336 KB n=100
28 Correct 1 ms 336 KB n=500
29 Correct 2 ms 592 KB n=500
30 Correct 2 ms 504 KB n=500
31 Correct 2 ms 336 KB n=500
32 Correct 1 ms 504 KB n=500
33 Correct 3 ms 336 KB n=500
34 Correct 1 ms 336 KB n=500
35 Correct 3 ms 336 KB n=500
36 Correct 7 ms 336 KB n=500
37 Correct 7 ms 336 KB n=500
38 Correct 7 ms 336 KB n=500
39 Correct 4 ms 336 KB n=500
40 Correct 5 ms 336 KB n=500
41 Correct 6 ms 336 KB n=500
42 Correct 5 ms 336 KB n=500
43 Correct 4 ms 336 KB n=500
44 Correct 6 ms 336 KB n=500
45 Correct 2 ms 504 KB n=500
46 Correct 2 ms 336 KB n=500
47 Correct 2 ms 504 KB n=500
48 Correct 1 ms 336 KB n=500
49 Correct 1 ms 336 KB n=500
50 Correct 4 ms 336 KB n=500
51 Correct 3 ms 336 KB n=500
52 Correct 2 ms 336 KB n=500
53 Correct 2 ms 336 KB n=500
54 Correct 3 ms 344 KB n=500
55 Correct 1 ms 336 KB n=278
56 Correct 4 ms 508 KB n=500
57 Correct 4 ms 584 KB n=500
58 Correct 8 ms 336 KB n=500
59 Correct 3 ms 1016 KB n=2000
60 Correct 31 ms 848 KB n=2000
61 Correct 24 ms 848 KB n=2000
62 Correct 17 ms 848 KB n=2000
63 Correct 2 ms 848 KB n=2000
64 Correct 21 ms 848 KB n=2000
65 Correct 2 ms 848 KB n=2000
66 Correct 26 ms 848 KB n=2000
67 Correct 3 ms 848 KB n=2000
68 Correct 22 ms 912 KB n=2000
69 Correct 116 ms 880 KB n=2000
70 Correct 107 ms 848 KB n=2000
71 Correct 106 ms 848 KB n=2000
72 Correct 60 ms 848 KB n=2000
73 Correct 60 ms 872 KB n=2000
74 Correct 2 ms 848 KB n=1844
75 Correct 65 ms 868 KB n=2000
76 Correct 56 ms 864 KB n=2000
77 Correct 55 ms 592 KB n=2000
78 Correct 57 ms 864 KB n=2000
79 Correct 2 ms 848 KB n=2000
80 Correct 24 ms 944 KB n=2000
81 Correct 20 ms 848 KB n=2000
82 Correct 3 ms 732 KB n=2000
83 Correct 28 ms 860 KB n=2000
84 Correct 24 ms 880 KB n=2000
85 Correct 56 ms 904 KB n=2000
86 Correct 47 ms 848 KB n=2000
87 Correct 25 ms 884 KB n=2000
88 Correct 146 ms 848 KB n=2000
89 Correct 143 ms 848 KB n=2000
90 Correct 67 ms 1016 KB n=2000
91 Correct 84 ms 864 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=5
2 Correct 1 ms 336 KB n=100
3 Correct 1 ms 336 KB n=100
4 Correct 1 ms 336 KB n=100
5 Correct 1 ms 336 KB n=100
6 Correct 1 ms 336 KB n=100
7 Correct 1 ms 336 KB n=100
8 Correct 1 ms 336 KB n=100
9 Correct 1 ms 336 KB n=100
10 Correct 1 ms 504 KB n=100
11 Correct 1 ms 336 KB n=100
12 Correct 1 ms 336 KB n=100
13 Correct 1 ms 336 KB n=100
14 Correct 1 ms 336 KB n=100
15 Correct 1 ms 336 KB n=100
16 Correct 1 ms 504 KB n=100
17 Correct 1 ms 336 KB n=100
18 Correct 1 ms 336 KB n=100
19 Correct 1 ms 336 KB n=100
20 Correct 1 ms 336 KB n=100
21 Correct 1 ms 504 KB n=100
22 Correct 1 ms 508 KB n=100
23 Correct 1 ms 336 KB n=100
24 Correct 1 ms 336 KB n=100
25 Correct 1 ms 504 KB n=100
26 Correct 1 ms 336 KB n=12
27 Correct 1 ms 336 KB n=100
28 Correct 1 ms 336 KB n=500
29 Correct 2 ms 592 KB n=500
30 Correct 2 ms 504 KB n=500
31 Correct 2 ms 336 KB n=500
32 Correct 1 ms 504 KB n=500
33 Correct 3 ms 336 KB n=500
34 Correct 1 ms 336 KB n=500
35 Correct 3 ms 336 KB n=500
36 Correct 7 ms 336 KB n=500
37 Correct 7 ms 336 KB n=500
38 Correct 7 ms 336 KB n=500
39 Correct 4 ms 336 KB n=500
40 Correct 5 ms 336 KB n=500
41 Correct 6 ms 336 KB n=500
42 Correct 5 ms 336 KB n=500
43 Correct 4 ms 336 KB n=500
44 Correct 6 ms 336 KB n=500
45 Correct 2 ms 504 KB n=500
46 Correct 2 ms 336 KB n=500
47 Correct 2 ms 504 KB n=500
48 Correct 1 ms 336 KB n=500
49 Correct 1 ms 336 KB n=500
50 Correct 4 ms 336 KB n=500
51 Correct 3 ms 336 KB n=500
52 Correct 2 ms 336 KB n=500
53 Correct 2 ms 336 KB n=500
54 Correct 3 ms 344 KB n=500
55 Correct 1 ms 336 KB n=278
56 Correct 4 ms 508 KB n=500
57 Correct 4 ms 584 KB n=500
58 Correct 8 ms 336 KB n=500
59 Correct 3 ms 1016 KB n=2000
60 Correct 31 ms 848 KB n=2000
61 Correct 24 ms 848 KB n=2000
62 Correct 17 ms 848 KB n=2000
63 Correct 2 ms 848 KB n=2000
64 Correct 21 ms 848 KB n=2000
65 Correct 2 ms 848 KB n=2000
66 Correct 26 ms 848 KB n=2000
67 Correct 3 ms 848 KB n=2000
68 Correct 22 ms 912 KB n=2000
69 Correct 116 ms 880 KB n=2000
70 Correct 107 ms 848 KB n=2000
71 Correct 106 ms 848 KB n=2000
72 Correct 60 ms 848 KB n=2000
73 Correct 60 ms 872 KB n=2000
74 Correct 2 ms 848 KB n=1844
75 Correct 65 ms 868 KB n=2000
76 Correct 56 ms 864 KB n=2000
77 Correct 55 ms 592 KB n=2000
78 Correct 57 ms 864 KB n=2000
79 Correct 2 ms 848 KB n=2000
80 Correct 24 ms 944 KB n=2000
81 Correct 20 ms 848 KB n=2000
82 Correct 3 ms 732 KB n=2000
83 Correct 28 ms 860 KB n=2000
84 Correct 24 ms 880 KB n=2000
85 Correct 56 ms 904 KB n=2000
86 Correct 47 ms 848 KB n=2000
87 Correct 25 ms 884 KB n=2000
88 Correct 146 ms 848 KB n=2000
89 Correct 143 ms 848 KB n=2000
90 Correct 67 ms 1016 KB n=2000
91 Correct 84 ms 864 KB n=2000
92 Correct 377 ms 41892 KB n=200000
93 Execution timed out 4054 ms 44416 KB Time limit exceeded
94 Halted 0 ms 0 KB -