oj.uz

Submission #503293

# Submission time Handle Problem Language Result Execution time Memory
503293 2022-01-07T15:37:42 Z NachoLibre Birthday gift (IZhO18_treearray) C++17
100 / 100
 975 ms 80580 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
using namespace std;

const int N = 200005, M = 18;
vector<int> v[N];
set<int> s[N], o[N];
int a[N], b[N], d[N], up[N][M];

void dfsu(int x = 1, int y = 0) {
	up[x][0] = y;
	d[x] = d[y] + 1;
	for(int z : v[x]) {
		if(z == y) continue;
		dfsu(z, x);
	}
}

int L(int x, int y) {
	if(!x || !y) return 0;
	if(d[x] < d[y]) swap(x, y);
	for(int i = M - 1; i >= 0; --i) {
		if(d[x] - (1 << i) >= d[y]) {
			x = up[x][i];
		}
	}
	if(x == y) return x;
	for(int i = M - 1; i >= 0; --i) {
		if(up[x][i] ^ up[y][i]) {
			x = up[x][i];
			y = up[y][i];
		}
	}
	return up[x][0];
}

void _set(int i, int x) {
	if(b[i - 1]) s[b[i - 1]].erase(i - 1);
	if(b[i]) s[b[i]].erase(i);
	if(a[i]) o[a[i]].erase(i);
	a[i] = x;
	if(a[i]) o[a[i]].insert(i);
	b[i - 1] = L(a[i - 1], a[i]);
	b[i] = L(a[i], a[i + 1]);
	if(b[i - 1]) s[b[i - 1]].insert(i - 1);
	if(b[i]) s[b[i]].insert(i);
}

void answer(int l, int r, int x) {
	auto it = o[x].lower_bound(l);
	if(it != o[x].end() && *it <= r) {
		cout << *it << " " << *it << "\n";
		return;
	}
	it = s[x].lower_bound(l);
	if(it != s[x].end() && *it <= r - 1) {
		cout << *it << " " << *it + 1 << "\n";
		return;
	}
	cout << "-1 -1\n";
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	#ifdef x
	freopen("x.txt", "r", stdin);
	#endif
	int n, m, q;
	cin >> n >> m >> q;
	for(int i = 1; i < n; ++i) {
		int x, y;
		cin >> x >> y;
		v[x].push_back(y);
		v[y].push_back(x);
	}
	dfsu();
	for(int i = 1; i < M; ++i) {
		for(int j = 1; j <= n; ++j) {
			up[j][i] = up[up[j][i - 1]][i - 1];
		}
	}
	for(int i = 1; i <= m; ++i) {
		int x;
		cin >> x;
		_set(i, x);
	}
	for(int i = 1; i <= q; ++i) {
		int t, x, y;
		cin >> t >> x >> y;
		if(t == 1) {
			_set(x, y);
		} else {
			int z;
			cin >> z;
			answer(x, y, z);
		}
	}
	return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=5
2 Correct 14 ms 23740 KB n=100
3 Correct 11 ms 23756 KB n=100
4 Correct 12 ms 23792 KB n=100
5 Correct 12 ms 23808 KB n=100
6 Correct 13 ms 23756 KB n=100
7 Correct 12 ms 23756 KB n=100
8 Correct 12 ms 23776 KB n=100
9 Correct 13 ms 23772 KB n=100
10 Correct 12 ms 23804 KB n=100
11 Correct 13 ms 23816 KB n=100
12 Correct 12 ms 23756 KB n=100
13 Correct 12 ms 23756 KB n=100
14 Correct 12 ms 23756 KB n=100
15 Correct 12 ms 23756 KB n=100
16 Correct 12 ms 23796 KB n=100
17 Correct 11 ms 23788 KB n=100
18 Correct 14 ms 23800 KB n=100
19 Correct 12 ms 23756 KB n=100
20 Correct 12 ms 23756 KB n=100
21 Correct 13 ms 23780 KB n=100
22 Correct 12 ms 23756 KB n=100
23 Correct 15 ms 23756 KB n=100
24 Correct 12 ms 23756 KB n=100
25 Correct 11 ms 23800 KB n=100
26 Correct 14 ms 23756 KB n=12
27 Correct 12 ms 23800 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=5
2 Correct 14 ms 23740 KB n=100
3 Correct 11 ms 23756 KB n=100
4 Correct 12 ms 23792 KB n=100
5 Correct 12 ms 23808 KB n=100
6 Correct 13 ms 23756 KB n=100
7 Correct 12 ms 23756 KB n=100
8 Correct 12 ms 23776 KB n=100
9 Correct 13 ms 23772 KB n=100
10 Correct 12 ms 23804 KB n=100
11 Correct 13 ms 23816 KB n=100
12 Correct 12 ms 23756 KB n=100
13 Correct 12 ms 23756 KB n=100
14 Correct 12 ms 23756 KB n=100
15 Correct 12 ms 23756 KB n=100
16 Correct 12 ms 23796 KB n=100
17 Correct 11 ms 23788 KB n=100
18 Correct 14 ms 23800 KB n=100
19 Correct 12 ms 23756 KB n=100
20 Correct 12 ms 23756 KB n=100
21 Correct 13 ms 23780 KB n=100
22 Correct 12 ms 23756 KB n=100
23 Correct 15 ms 23756 KB n=100
24 Correct 12 ms 23756 KB n=100
25 Correct 11 ms 23800 KB n=100
26 Correct 14 ms 23756 KB n=12
27 Correct 12 ms 23800 KB n=100
28 Correct 12 ms 23884 KB n=500
29 Correct 15 ms 23916 KB n=500
30 Correct 13 ms 23944 KB n=500
31 Correct 13 ms 23884 KB n=500
32 Correct 12 ms 23812 KB n=500
33 Correct 12 ms 23912 KB n=500
34 Correct 12 ms 23936 KB n=500
35 Correct 12 ms 23884 KB n=500
36 Correct 13 ms 23884 KB n=500
37 Correct 15 ms 23884 KB n=500
38 Correct 13 ms 23884 KB n=500
39 Correct 13 ms 23808 KB n=500
40 Correct 13 ms 23944 KB n=500
41 Correct 13 ms 23940 KB n=500
42 Correct 13 ms 23884 KB n=500
43 Correct 13 ms 23884 KB n=500
44 Correct 12 ms 23884 KB n=500
45 Correct 13 ms 23884 KB n=500
46 Correct 12 ms 23884 KB n=500
47 Correct 13 ms 23952 KB n=500
48 Correct 13 ms 23884 KB n=500
49 Correct 12 ms 23884 KB n=500
50 Correct 14 ms 23936 KB n=500
51 Correct 12 ms 23852 KB n=500
52 Correct 14 ms 23904 KB n=500
53 Correct 18 ms 23808 KB n=500
54 Correct 12 ms 23884 KB n=500
55 Correct 12 ms 23864 KB n=278
56 Correct 12 ms 23940 KB n=500
57 Correct 12 ms 23884 KB n=500
58 Correct 12 ms 23884 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=5
2 Correct 14 ms 23740 KB n=100
3 Correct 11 ms 23756 KB n=100
4 Correct 12 ms 23792 KB n=100
5 Correct 12 ms 23808 KB n=100
6 Correct 13 ms 23756 KB n=100
7 Correct 12 ms 23756 KB n=100
8 Correct 12 ms 23776 KB n=100
9 Correct 13 ms 23772 KB n=100
10 Correct 12 ms 23804 KB n=100
11 Correct 13 ms 23816 KB n=100
12 Correct 12 ms 23756 KB n=100
13 Correct 12 ms 23756 KB n=100
14 Correct 12 ms 23756 KB n=100
15 Correct 12 ms 23756 KB n=100
16 Correct 12 ms 23796 KB n=100
17 Correct 11 ms 23788 KB n=100
18 Correct 14 ms 23800 KB n=100
19 Correct 12 ms 23756 KB n=100
20 Correct 12 ms 23756 KB n=100
21 Correct 13 ms 23780 KB n=100
22 Correct 12 ms 23756 KB n=100
23 Correct 15 ms 23756 KB n=100
24 Correct 12 ms 23756 KB n=100
25 Correct 11 ms 23800 KB n=100
26 Correct 14 ms 23756 KB n=12
27 Correct 12 ms 23800 KB n=100
28 Correct 12 ms 23884 KB n=500
29 Correct 15 ms 23916 KB n=500
30 Correct 13 ms 23944 KB n=500
31 Correct 13 ms 23884 KB n=500
32 Correct 12 ms 23812 KB n=500
33 Correct 12 ms 23912 KB n=500
34 Correct 12 ms 23936 KB n=500
35 Correct 12 ms 23884 KB n=500
36 Correct 13 ms 23884 KB n=500
37 Correct 15 ms 23884 KB n=500
38 Correct 13 ms 23884 KB n=500
39 Correct 13 ms 23808 KB n=500
40 Correct 13 ms 23944 KB n=500
41 Correct 13 ms 23940 KB n=500
42 Correct 13 ms 23884 KB n=500
43 Correct 13 ms 23884 KB n=500
44 Correct 12 ms 23884 KB n=500
45 Correct 13 ms 23884 KB n=500
46 Correct 12 ms 23884 KB n=500
47 Correct 13 ms 23952 KB n=500
48 Correct 13 ms 23884 KB n=500
49 Correct 12 ms 23884 KB n=500
50 Correct 14 ms 23936 KB n=500
51 Correct 12 ms 23852 KB n=500
52 Correct 14 ms 23904 KB n=500
53 Correct 18 ms 23808 KB n=500
54 Correct 12 ms 23884 KB n=500
55 Correct 12 ms 23864 KB n=278
56 Correct 12 ms 23940 KB n=500
57 Correct 12 ms 23884 KB n=500
58 Correct 12 ms 23884 KB n=500
59 Correct 15 ms 24304 KB n=2000
60 Correct 15 ms 24396 KB n=2000
61 Correct 15 ms 24348 KB n=2000
62 Correct 17 ms 24272 KB n=2000
63 Correct 15 ms 24280 KB n=2000
64 Correct 14 ms 24268 KB n=2000
65 Correct 14 ms 24268 KB n=2000
66 Correct 15 ms 24464 KB n=2000
67 Correct 18 ms 24268 KB n=2000
68 Correct 15 ms 24324 KB n=2000
69 Correct 14 ms 24268 KB n=2000
70 Correct 19 ms 24292 KB n=2000
71 Correct 16 ms 24196 KB n=2000
72 Correct 14 ms 24200 KB n=2000
73 Correct 14 ms 24268 KB n=2000
74 Correct 15 ms 24268 KB n=1844
75 Correct 13 ms 24196 KB n=2000
76 Correct 16 ms 24208 KB n=2000
77 Correct 20 ms 24252 KB n=2000
78 Correct 16 ms 24268 KB n=2000
79 Correct 15 ms 24200 KB n=2000
80 Correct 14 ms 24268 KB n=2000
81 Correct 15 ms 24324 KB n=2000
82 Correct 14 ms 24280 KB n=2000
83 Correct 16 ms 24328 KB n=2000
84 Correct 15 ms 24296 KB n=2000
85 Correct 16 ms 24284 KB n=2000
86 Correct 19 ms 24188 KB n=2000
87 Correct 15 ms 24268 KB n=2000
88 Correct 14 ms 24268 KB n=2000
89 Correct 15 ms 24380 KB n=2000
90 Correct 14 ms 24280 KB n=2000
91 Correct 14 ms 24268 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=5
2 Correct 14 ms 23740 KB n=100
3 Correct 11 ms 23756 KB n=100
4 Correct 12 ms 23792 KB n=100
5 Correct 12 ms 23808 KB n=100
6 Correct 13 ms 23756 KB n=100
7 Correct 12 ms 23756 KB n=100
8 Correct 12 ms 23776 KB n=100
9 Correct 13 ms 23772 KB n=100
10 Correct 12 ms 23804 KB n=100
11 Correct 13 ms 23816 KB n=100
12 Correct 12 ms 23756 KB n=100
13 Correct 12 ms 23756 KB n=100
14 Correct 12 ms 23756 KB n=100
15 Correct 12 ms 23756 KB n=100
16 Correct 12 ms 23796 KB n=100
17 Correct 11 ms 23788 KB n=100
18 Correct 14 ms 23800 KB n=100
19 Correct 12 ms 23756 KB n=100
20 Correct 12 ms 23756 KB n=100
21 Correct 13 ms 23780 KB n=100
22 Correct 12 ms 23756 KB n=100
23 Correct 15 ms 23756 KB n=100
24 Correct 12 ms 23756 KB n=100
25 Correct 11 ms 23800 KB n=100
26 Correct 14 ms 23756 KB n=12
27 Correct 12 ms 23800 KB n=100
28 Correct 12 ms 23884 KB n=500
29 Correct 15 ms 23916 KB n=500
30 Correct 13 ms 23944 KB n=500
31 Correct 13 ms 23884 KB n=500
32 Correct 12 ms 23812 KB n=500
33 Correct 12 ms 23912 KB n=500
34 Correct 12 ms 23936 KB n=500
35 Correct 12 ms 23884 KB n=500
36 Correct 13 ms 23884 KB n=500
37 Correct 15 ms 23884 KB n=500
38 Correct 13 ms 23884 KB n=500
39 Correct 13 ms 23808 KB n=500
40 Correct 13 ms 23944 KB n=500
41 Correct 13 ms 23940 KB n=500
42 Correct 13 ms 23884 KB n=500
43 Correct 13 ms 23884 KB n=500
44 Correct 12 ms 23884 KB n=500
45 Correct 13 ms 23884 KB n=500
46 Correct 12 ms 23884 KB n=500
47 Correct 13 ms 23952 KB n=500
48 Correct 13 ms 23884 KB n=500
49 Correct 12 ms 23884 KB n=500
50 Correct 14 ms 23936 KB n=500
51 Correct 12 ms 23852 KB n=500
52 Correct 14 ms 23904 KB n=500
53 Correct 18 ms 23808 KB n=500
54 Correct 12 ms 23884 KB n=500
55 Correct 12 ms 23864 KB n=278
56 Correct 12 ms 23940 KB n=500
57 Correct 12 ms 23884 KB n=500
58 Correct 12 ms 23884 KB n=500
59 Correct 15 ms 24304 KB n=2000
60 Correct 15 ms 24396 KB n=2000
61 Correct 15 ms 24348 KB n=2000
62 Correct 17 ms 24272 KB n=2000
63 Correct 15 ms 24280 KB n=2000
64 Correct 14 ms 24268 KB n=2000
65 Correct 14 ms 24268 KB n=2000
66 Correct 15 ms 24464 KB n=2000
67 Correct 18 ms 24268 KB n=2000
68 Correct 15 ms 24324 KB n=2000
69 Correct 14 ms 24268 KB n=2000
70 Correct 19 ms 24292 KB n=2000
71 Correct 16 ms 24196 KB n=2000
72 Correct 14 ms 24200 KB n=2000
73 Correct 14 ms 24268 KB n=2000
74 Correct 15 ms 24268 KB n=1844
75 Correct 13 ms 24196 KB n=2000
76 Correct 16 ms 24208 KB n=2000
77 Correct 20 ms 24252 KB n=2000
78 Correct 16 ms 24268 KB n=2000
79 Correct 15 ms 24200 KB n=2000
80 Correct 14 ms 24268 KB n=2000
81 Correct 15 ms 24324 KB n=2000
82 Correct 14 ms 24280 KB n=2000
83 Correct 16 ms 24328 KB n=2000
84 Correct 15 ms 24296 KB n=2000
85 Correct 16 ms 24284 KB n=2000
86 Correct 19 ms 24188 KB n=2000
87 Correct 15 ms 24268 KB n=2000
88 Correct 14 ms 24268 KB n=2000
89 Correct 15 ms 24380 KB n=2000
90 Correct 14 ms 24280 KB n=2000
91 Correct 14 ms 24268 KB n=2000
92 Correct 625 ms 72484 KB n=200000
93 Correct 820 ms 76176 KB n=200000
94 Correct 774 ms 79644 KB n=200000
95 Correct 653 ms 72300 KB n=200000
96 Correct 587 ms 72380 KB n=200000
97 Correct 832 ms 75420 KB n=200000
98 Correct 646 ms 72572 KB n=200000
99 Correct 735 ms 71784 KB n=200000
100 Correct 671 ms 72184 KB n=200000
101 Correct 732 ms 80156 KB n=200000
102 Correct 390 ms 73140 KB n=200000
103 Correct 404 ms 73184 KB n=200000
104 Correct 389 ms 72888 KB n=200000
105 Correct 405 ms 73028 KB n=200000
106 Correct 398 ms 73012 KB n=200000
107 Correct 399 ms 72988 KB n=200000
108 Correct 708 ms 71876 KB n=200000
109 Correct 700 ms 71888 KB n=200000
110 Correct 706 ms 71816 KB n=200000
111 Correct 654 ms 72004 KB n=200000
112 Correct 763 ms 79496 KB n=200000
113 Correct 876 ms 75060 KB n=200000
114 Correct 660 ms 72028 KB n=200000
115 Correct 926 ms 72924 KB n=200000
116 Correct 617 ms 71868 KB n=200000
117 Correct 753 ms 79780 KB n=200000
118 Correct 975 ms 73756 KB n=200000
119 Correct 666 ms 71728 KB n=200000
120 Correct 722 ms 80116 KB n=200000
121 Correct 764 ms 79992 KB n=200000
122 Correct 699 ms 80580 KB n=200000
123 Correct 422 ms 72136 KB n=200000
124 Correct 178 ms 38844 KB n=25264