oj.uz

Submission #989635

# Submission time Handle Problem Language Result Execution time Memory
989635 2024-05-28T12:56:41 Z tch1cherin Birthday gift (IZhO18_treearray) C++17
100 / 100
 582 ms 87052 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAX_N = 200000, LG = 20;
vector<int> graph[MAX_N];
int up[MAX_N][LG];
int depth[MAX_N];

void dfs(int u, int p) {
  up[u][0] = p;
  for (int i = 1; i < LG; i++) {
    up[u][i] = up[up[u][i - 1]][i - 1];
  }
  for (int v : graph[u]) {
    if (v != p) {
      depth[v] = depth[u] + 1;
      dfs(v, u);
    }
  }
}

int lca(int u, int v) {
  if (depth[u] < depth[v]) {
    swap(u, v);
  }
  for (int i = LG - 1; i >= 0; i--) {
    if (depth[u] - (1 << i) >= depth[v]) {
      u = up[u][i];
    }
  }
  if (u == v) {
    return u;
  }
  for (int i = LG - 1; i >= 0; i--) {
    if (up[u][i] != up[v][i]) {
      u = up[u][i];
      v = up[v][i];
    }
  }
  return up[u][0];
}

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n, m, q;
  cin >> n >> m >> q;
  for (int i = 0; i < n - 1; i++) {
    int u, v;
    cin >> u >> v;
    u--, v--;
    graph[u].push_back(v);
    graph[v].push_back(u);
  }
  vector<int> a(m);
  for (int &value : a) {
    cin >> value;
    value--;
  }
  depth[0] = 0;
  dfs(0, 0);
  vector<set<int>> S(n), Sv(n);
  for (int i = 0; i < m; i++) {
    Sv[a[i]].insert(i);
  }
  for (int i = 0; i < m - 1; i++) {
    S[lca(a[i], a[i + 1])].insert(i);
  }
  while (q--) {
    int tp;
    cin >> tp;
    if (tp == 1) {
      int pos, v;
      cin >> pos >> v;
      pos--, v--;
      Sv[a[pos]].erase(pos);
      for (int j = max(0, pos - 1); j <= pos && j < m - 1; j++) {
        S[lca(a[j], a[j + 1])].erase(j);  
      }
      a[pos] = v;
      Sv[a[pos]].insert(pos);
      for (int j = max(0, pos - 1); j <= pos && j < m - 1; j++) {
        S[lca(a[j], a[j + 1])].insert(j);
      }
    } else {
      int l, r, v;
      cin >> l >> r >> v;
      l--, v--;
      auto itv = Sv[v].lower_bound(l);
      if (itv != Sv[v].end() && *itv < r) {
        cout << *itv + 1 << " " << *itv + 1 << "\n";
      } else {
        auto it = S[v].lower_bound(l);
        if (it != S[v].end() && *it + 1 < r) {
          cout << *it + 1 << " " << *it + 2 << "\n";
        } else {
          cout << "-1 -1\n";
        }
      }
    }
  }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB n=5
2 Correct 2 ms 4956 KB n=100
3 Correct 3 ms 4956 KB n=100
4 Correct 3 ms 5212 KB n=100
5 Correct 2 ms 5212 KB n=100
6 Correct 2 ms 4956 KB n=100
7 Correct 2 ms 4956 KB n=100
8 Correct 2 ms 4952 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 2 ms 4956 KB n=100
11 Correct 2 ms 5212 KB n=100
12 Correct 2 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 3 ms 5168 KB n=100
15 Correct 2 ms 5212 KB n=100
16 Correct 2 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 3 ms 4956 KB n=100
19 Correct 2 ms 5172 KB n=100
20 Correct 2 ms 4956 KB n=100
21 Correct 2 ms 5208 KB n=100
22 Correct 2 ms 4956 KB n=100
23 Correct 3 ms 4952 KB n=100
24 Correct 2 ms 5168 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 2 ms 4952 KB n=12
27 Correct 2 ms 4956 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB n=5
2 Correct 2 ms 4956 KB n=100
3 Correct 3 ms 4956 KB n=100
4 Correct 3 ms 5212 KB n=100
5 Correct 2 ms 5212 KB n=100
6 Correct 2 ms 4956 KB n=100
7 Correct 2 ms 4956 KB n=100
8 Correct 2 ms 4952 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 2 ms 4956 KB n=100
11 Correct 2 ms 5212 KB n=100
12 Correct 2 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 3 ms 5168 KB n=100
15 Correct 2 ms 5212 KB n=100
16 Correct 2 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 3 ms 4956 KB n=100
19 Correct 2 ms 5172 KB n=100
20 Correct 2 ms 4956 KB n=100
21 Correct 2 ms 5208 KB n=100
22 Correct 2 ms 4956 KB n=100
23 Correct 3 ms 4952 KB n=100
24 Correct 2 ms 5168 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 2 ms 4952 KB n=12
27 Correct 2 ms 4956 KB n=100
28 Correct 3 ms 5212 KB n=500
29 Correct 2 ms 5212 KB n=500
30 Correct 3 ms 5212 KB n=500
31 Correct 3 ms 5176 KB n=500
32 Correct 3 ms 5212 KB n=500
33 Correct 2 ms 5180 KB n=500
34 Correct 3 ms 5212 KB n=500
35 Correct 3 ms 5208 KB n=500
36 Correct 3 ms 5212 KB n=500
37 Correct 2 ms 5136 KB n=500
38 Correct 3 ms 5208 KB n=500
39 Correct 2 ms 5212 KB n=500
40 Correct 2 ms 5212 KB n=500
41 Correct 2 ms 5208 KB n=500
42 Correct 2 ms 5212 KB n=500
43 Correct 3 ms 5212 KB n=500
44 Correct 3 ms 5212 KB n=500
45 Correct 3 ms 5208 KB n=500
46 Correct 3 ms 5208 KB n=500
47 Correct 3 ms 5212 KB n=500
48 Correct 3 ms 5340 KB n=500
49 Correct 3 ms 5212 KB n=500
50 Correct 2 ms 5212 KB n=500
51 Correct 2 ms 5212 KB n=500
52 Correct 2 ms 5212 KB n=500
53 Correct 3 ms 5212 KB n=500
54 Correct 2 ms 5212 KB n=500
55 Correct 2 ms 5212 KB n=278
56 Correct 3 ms 5212 KB n=500
57 Correct 3 ms 5212 KB n=500
58 Correct 3 ms 5212 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB n=5
2 Correct 2 ms 4956 KB n=100
3 Correct 3 ms 4956 KB n=100
4 Correct 3 ms 5212 KB n=100
5 Correct 2 ms 5212 KB n=100
6 Correct 2 ms 4956 KB n=100
7 Correct 2 ms 4956 KB n=100
8 Correct 2 ms 4952 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 2 ms 4956 KB n=100
11 Correct 2 ms 5212 KB n=100
12 Correct 2 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 3 ms 5168 KB n=100
15 Correct 2 ms 5212 KB n=100
16 Correct 2 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 3 ms 4956 KB n=100
19 Correct 2 ms 5172 KB n=100
20 Correct 2 ms 4956 KB n=100
21 Correct 2 ms 5208 KB n=100
22 Correct 2 ms 4956 KB n=100
23 Correct 3 ms 4952 KB n=100
24 Correct 2 ms 5168 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 2 ms 4952 KB n=12
27 Correct 2 ms 4956 KB n=100
28 Correct 3 ms 5212 KB n=500
29 Correct 2 ms 5212 KB n=500
30 Correct 3 ms 5212 KB n=500
31 Correct 3 ms 5176 KB n=500
32 Correct 3 ms 5212 KB n=500
33 Correct 2 ms 5180 KB n=500
34 Correct 3 ms 5212 KB n=500
35 Correct 3 ms 5208 KB n=500
36 Correct 3 ms 5212 KB n=500
37 Correct 2 ms 5136 KB n=500
38 Correct 3 ms 5208 KB n=500
39 Correct 2 ms 5212 KB n=500
40 Correct 2 ms 5212 KB n=500
41 Correct 2 ms 5208 KB n=500
42 Correct 2 ms 5212 KB n=500
43 Correct 3 ms 5212 KB n=500
44 Correct 3 ms 5212 KB n=500
45 Correct 3 ms 5208 KB n=500
46 Correct 3 ms 5208 KB n=500
47 Correct 3 ms 5212 KB n=500
48 Correct 3 ms 5340 KB n=500
49 Correct 3 ms 5212 KB n=500
50 Correct 2 ms 5212 KB n=500
51 Correct 2 ms 5212 KB n=500
52 Correct 2 ms 5212 KB n=500
53 Correct 3 ms 5212 KB n=500
54 Correct 2 ms 5212 KB n=500
55 Correct 2 ms 5212 KB n=278
56 Correct 3 ms 5212 KB n=500
57 Correct 3 ms 5212 KB n=500
58 Correct 3 ms 5212 KB n=500
59 Correct 4 ms 5720 KB n=2000
60 Correct 5 ms 5724 KB n=2000
61 Correct 4 ms 5724 KB n=2000
62 Correct 5 ms 5876 KB n=2000
63 Correct 4 ms 5724 KB n=2000
64 Correct 5 ms 5724 KB n=2000
65 Correct 4 ms 5808 KB n=2000
66 Correct 5 ms 5724 KB n=2000
67 Correct 5 ms 5724 KB n=2000
68 Correct 5 ms 5724 KB n=2000
69 Correct 4 ms 5724 KB n=2000
70 Correct 4 ms 5724 KB n=2000
71 Correct 4 ms 5724 KB n=2000
72 Correct 3 ms 5724 KB n=2000
73 Correct 4 ms 5724 KB n=2000
74 Correct 4 ms 5724 KB n=1844
75 Correct 4 ms 5724 KB n=2000
76 Correct 4 ms 5724 KB n=2000
77 Correct 4 ms 5728 KB n=2000
78 Correct 5 ms 5720 KB n=2000
79 Correct 4 ms 5720 KB n=2000
80 Correct 4 ms 5724 KB n=2000
81 Correct 5 ms 5724 KB n=2000
82 Correct 4 ms 5728 KB n=2000
83 Correct 4 ms 5724 KB n=2000
84 Correct 4 ms 5724 KB n=2000
85 Correct 5 ms 5720 KB n=2000
86 Correct 5 ms 5724 KB n=2000
87 Correct 4 ms 5724 KB n=2000
88 Correct 4 ms 5724 KB n=2000
89 Correct 4 ms 5864 KB n=2000
90 Correct 4 ms 5724 KB n=2000
91 Correct 4 ms 5720 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB n=5
2 Correct 2 ms 4956 KB n=100
3 Correct 3 ms 4956 KB n=100
4 Correct 3 ms 5212 KB n=100
5 Correct 2 ms 5212 KB n=100
6 Correct 2 ms 4956 KB n=100
7 Correct 2 ms 4956 KB n=100
8 Correct 2 ms 4952 KB n=100
9 Correct 2 ms 4956 KB n=100
10 Correct 2 ms 4956 KB n=100
11 Correct 2 ms 5212 KB n=100
12 Correct 2 ms 4956 KB n=100
13 Correct 2 ms 4956 KB n=100
14 Correct 3 ms 5168 KB n=100
15 Correct 2 ms 5212 KB n=100
16 Correct 2 ms 4956 KB n=100
17 Correct 2 ms 4956 KB n=100
18 Correct 3 ms 4956 KB n=100
19 Correct 2 ms 5172 KB n=100
20 Correct 2 ms 4956 KB n=100
21 Correct 2 ms 5208 KB n=100
22 Correct 2 ms 4956 KB n=100
23 Correct 3 ms 4952 KB n=100
24 Correct 2 ms 5168 KB n=100
25 Correct 2 ms 4956 KB n=100
26 Correct 2 ms 4952 KB n=12
27 Correct 2 ms 4956 KB n=100
28 Correct 3 ms 5212 KB n=500
29 Correct 2 ms 5212 KB n=500
30 Correct 3 ms 5212 KB n=500
31 Correct 3 ms 5176 KB n=500
32 Correct 3 ms 5212 KB n=500
33 Correct 2 ms 5180 KB n=500
34 Correct 3 ms 5212 KB n=500
35 Correct 3 ms 5208 KB n=500
36 Correct 3 ms 5212 KB n=500
37 Correct 2 ms 5136 KB n=500
38 Correct 3 ms 5208 KB n=500
39 Correct 2 ms 5212 KB n=500
40 Correct 2 ms 5212 KB n=500
41 Correct 2 ms 5208 KB n=500
42 Correct 2 ms 5212 KB n=500
43 Correct 3 ms 5212 KB n=500
44 Correct 3 ms 5212 KB n=500
45 Correct 3 ms 5208 KB n=500
46 Correct 3 ms 5208 KB n=500
47 Correct 3 ms 5212 KB n=500
48 Correct 3 ms 5340 KB n=500
49 Correct 3 ms 5212 KB n=500
50 Correct 2 ms 5212 KB n=500
51 Correct 2 ms 5212 KB n=500
52 Correct 2 ms 5212 KB n=500
53 Correct 3 ms 5212 KB n=500
54 Correct 2 ms 5212 KB n=500
55 Correct 2 ms 5212 KB n=278
56 Correct 3 ms 5212 KB n=500
57 Correct 3 ms 5212 KB n=500
58 Correct 3 ms 5212 KB n=500
59 Correct 4 ms 5720 KB n=2000
60 Correct 5 ms 5724 KB n=2000
61 Correct 4 ms 5724 KB n=2000
62 Correct 5 ms 5876 KB n=2000
63 Correct 4 ms 5724 KB n=2000
64 Correct 5 ms 5724 KB n=2000
65 Correct 4 ms 5808 KB n=2000
66 Correct 5 ms 5724 KB n=2000
67 Correct 5 ms 5724 KB n=2000
68 Correct 5 ms 5724 KB n=2000
69 Correct 4 ms 5724 KB n=2000
70 Correct 4 ms 5724 KB n=2000
71 Correct 4 ms 5724 KB n=2000
72 Correct 3 ms 5724 KB n=2000
73 Correct 4 ms 5724 KB n=2000
74 Correct 4 ms 5724 KB n=1844
75 Correct 4 ms 5724 KB n=2000
76 Correct 4 ms 5724 KB n=2000
77 Correct 4 ms 5728 KB n=2000
78 Correct 5 ms 5720 KB n=2000
79 Correct 4 ms 5720 KB n=2000
80 Correct 4 ms 5724 KB n=2000
81 Correct 5 ms 5724 KB n=2000
82 Correct 4 ms 5728 KB n=2000
83 Correct 4 ms 5724 KB n=2000
84 Correct 4 ms 5724 KB n=2000
85 Correct 5 ms 5720 KB n=2000
86 Correct 5 ms 5724 KB n=2000
87 Correct 4 ms 5724 KB n=2000
88 Correct 4 ms 5724 KB n=2000
89 Correct 4 ms 5864 KB n=2000
90 Correct 4 ms 5724 KB n=2000
91 Correct 4 ms 5720 KB n=2000
92 Correct 405 ms 74688 KB n=200000
93 Correct 514 ms 80916 KB n=200000
94 Correct 582 ms 85588 KB n=200000
95 Correct 400 ms 74432 KB n=200000
96 Correct 389 ms 74440 KB n=200000
97 Correct 521 ms 79700 KB n=200000
98 Correct 387 ms 74480 KB n=200000
99 Correct 448 ms 74580 KB n=200000
100 Correct 401 ms 74440 KB n=200000
101 Correct 512 ms 87052 KB n=200000
102 Correct 237 ms 75600 KB n=200000
103 Correct 228 ms 75512 KB n=200000
104 Correct 232 ms 75604 KB n=200000
105 Correct 226 ms 76040 KB n=200000
106 Correct 243 ms 76092 KB n=200000
107 Correct 230 ms 76112 KB n=200000
108 Correct 432 ms 74580 KB n=200000
109 Correct 435 ms 74560 KB n=200000
110 Correct 435 ms 74408 KB n=200000
111 Correct 384 ms 73924 KB n=200000
112 Correct 529 ms 85840 KB n=200000
113 Correct 529 ms 79956 KB n=200000
114 Correct 392 ms 73932 KB n=200000
115 Correct 535 ms 77224 KB n=200000
116 Correct 378 ms 74564 KB n=200000
117 Correct 506 ms 86356 KB n=200000
118 Correct 510 ms 78416 KB n=200000
119 Correct 387 ms 74436 KB n=200000
120 Correct 481 ms 86136 KB n=200000
121 Correct 477 ms 86096 KB n=200000
122 Correct 491 ms 86400 KB n=200000
123 Correct 219 ms 75856 KB n=200000
124 Correct 108 ms 22776 KB n=25264