oj.uz

Submission #570613

# Submission time Handle Problem Language Result Execution time Memory
570613 2022-05-30T17:52:00 Z SSRS Birthday gift (IZhO18_treearray) C++14
100 / 100
 1721 ms 94788 KB 
#include <bits/stdc++.h>
using namespace std;
const int LOG = 18;
struct lowest_common_ancestor{
  vector<int> d;
  vector<vector<int>> pp;
  lowest_common_ancestor(vector<int> &p, vector<int> &d): d(d){
    int N = p.size();
    pp = vector<vector<int>>(LOG, vector<int>(N, -1));
    pp[0] = p;
    for (int i = 0; i < LOG - 1; i++){
      for (int j = 0; j < N; j++){
        if (pp[i][j] != -1){
          pp[i + 1][j] = pp[i][pp[i][j]];
        }
      }
    }
  }
  int lca(int u, int v){
    if (d[u] > d[v]){
      swap(u, v);
    }
    for (int i = 0; i < LOG; i++){
      if (((d[v] - d[u]) >> i & 1) == 1){
        v = pp[i][v];
      }
    }
    if (u == v){
      return u;
    } else {
      for (int i = LOG - 1; i >= 0; i--){
        if (pp[i][u] != pp[i][v]){
          u = pp[i][u];
          v = pp[i][v];
        }
      }
      return pp[0][u];
    }
  }
};
int main(){
  int n, m, q;
  cin >> n >> m >> q;
  vector<vector<int>> E(n);
  for (int i = 0; i < n - 1; i++){
    int u, v;
    cin >> u >> v;
    u--;
    v--;
    E[u].push_back(v);
    E[v].push_back(u);
  }
  vector<int> a(m);
  for (int i = 0; i < m; i++){
    cin >> a[i];
    a[i]--;
  }
  vector<int> p(n, -1);
  vector<int> d(n, 0);
  queue<int> Q;
  Q.push(0);
  while (!Q.empty()){
    int v = Q.front();
    Q.pop();
    for (int w : E[v]){
      if (w != p[v]){
        p[w] = v;
        d[w] = d[v] + 1;
        Q.push(w);
      }
    }
  }
  lowest_common_ancestor T(p, d);
  vector<set<int>> st1(n);
  for (int i = 0; i < m; i++){
    st1[a[i]].insert(i);
  }
  for (int i = 0; i < n; i++){
    st1[i].insert(m);
  }
  vector<set<int>> st2(n);
  for (int i = 0; i < m - 1; i++){
    st2[T.lca(a[i], a[i + 1])].insert(i);
  }
  for (int i = 0; i < n; i++){
    st2[i].insert(m - 1);
  }
  for (int i = 0; i < q; i++){
    int t;
    cin >> t;
    if (t == 1){
      int pos, v;
      cin >> pos >> v;
      pos--;
      v--;
      st1[a[pos]].erase(pos);
      if (pos > 0){
        st2[T.lca(a[pos - 1], a[pos])].erase(pos - 1);
      }
      if (pos < m - 1){
        st2[T.lca(a[pos], a[pos + 1])].erase(pos);
      }
      a[pos] = v;
      st1[a[pos]].insert(pos);
      if (pos > 0){
        st2[T.lca(a[pos - 1], a[pos])].insert(pos - 1);
      }
      if (pos < m - 1){
        st2[T.lca(a[pos], a[pos + 1])].insert(pos);
      }
    }
    if (t == 2){
      int l, r, v;
      cin >> l >> r >> v;
      l--;
      v--;
      auto itr1 = st1[v].lower_bound(l);
      if (*itr1 < r){
        cout << *itr1 + 1 << ' ' << *itr1 + 1 << endl;
      } else {
        auto itr2 = st2[v].lower_bound(l);
        if (*itr2 < r - 1){
          cout << *itr2 + 1 << ' ' << *itr2 + 2 << endl;
        } else {
          cout << -1 << ' ' << -1 << endl;
        }
      }
    }
  }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n=5
2 Correct 1 ms 304 KB n=100
3 Correct 1 ms 440 KB n=100
4 Correct 1 ms 340 KB n=100
5 Correct 1 ms 304 KB n=100
6 Correct 1 ms 300 KB n=100
7 Correct 1 ms 300 KB n=100
8 Correct 1 ms 340 KB n=100
9 Correct 1 ms 340 KB n=100
10 Correct 1 ms 340 KB n=100
11 Correct 1 ms 340 KB n=100
12 Correct 1 ms 340 KB n=100
13 Correct 1 ms 340 KB n=100
14 Correct 1 ms 340 KB n=100
15 Correct 1 ms 340 KB n=100
16 Correct 1 ms 340 KB n=100
17 Correct 1 ms 296 KB n=100
18 Correct 1 ms 340 KB n=100
19 Correct 1 ms 340 KB n=100
20 Correct 1 ms 340 KB n=100
21 Correct 1 ms 340 KB n=100
22 Correct 1 ms 296 KB n=100
23 Correct 1 ms 340 KB n=100
24 Correct 1 ms 340 KB n=100
25 Correct 1 ms 340 KB n=100
26 Correct 1 ms 212 KB n=12
27 Correct 1 ms 340 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n=5
2 Correct 1 ms 304 KB n=100
3 Correct 1 ms 440 KB n=100
4 Correct 1 ms 340 KB n=100
5 Correct 1 ms 304 KB n=100
6 Correct 1 ms 300 KB n=100
7 Correct 1 ms 300 KB n=100
8 Correct 1 ms 340 KB n=100
9 Correct 1 ms 340 KB n=100
10 Correct 1 ms 340 KB n=100
11 Correct 1 ms 340 KB n=100
12 Correct 1 ms 340 KB n=100
13 Correct 1 ms 340 KB n=100
14 Correct 1 ms 340 KB n=100
15 Correct 1 ms 340 KB n=100
16 Correct 1 ms 340 KB n=100
17 Correct 1 ms 296 KB n=100
18 Correct 1 ms 340 KB n=100
19 Correct 1 ms 340 KB n=100
20 Correct 1 ms 340 KB n=100
21 Correct 1 ms 340 KB n=100
22 Correct 1 ms 296 KB n=100
23 Correct 1 ms 340 KB n=100
24 Correct 1 ms 340 KB n=100
25 Correct 1 ms 340 KB n=100
26 Correct 1 ms 212 KB n=12
27 Correct 1 ms 340 KB n=100
28 Correct 2 ms 468 KB n=500
29 Correct 2 ms 468 KB n=500
30 Correct 2 ms 468 KB n=500
31 Correct 2 ms 468 KB n=500
32 Correct 2 ms 468 KB n=500
33 Correct 2 ms 468 KB n=500
34 Correct 2 ms 440 KB n=500
35 Correct 2 ms 468 KB n=500
36 Correct 2 ms 468 KB n=500
37 Correct 2 ms 468 KB n=500
38 Correct 2 ms 468 KB n=500
39 Correct 2 ms 468 KB n=500
40 Correct 2 ms 468 KB n=500
41 Correct 2 ms 468 KB n=500
42 Correct 2 ms 468 KB n=500
43 Correct 2 ms 436 KB n=500
44 Correct 2 ms 436 KB n=500
45 Correct 2 ms 468 KB n=500
46 Correct 2 ms 468 KB n=500
47 Correct 3 ms 440 KB n=500
48 Correct 2 ms 468 KB n=500
49 Correct 2 ms 468 KB n=500
50 Correct 2 ms 444 KB n=500
51 Correct 2 ms 440 KB n=500
52 Correct 2 ms 440 KB n=500
53 Correct 2 ms 468 KB n=500
54 Correct 2 ms 468 KB n=500
55 Correct 1 ms 340 KB n=278
56 Correct 2 ms 468 KB n=500
57 Correct 2 ms 468 KB n=500
58 Correct 2 ms 468 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n=5
2 Correct 1 ms 304 KB n=100
3 Correct 1 ms 440 KB n=100
4 Correct 1 ms 340 KB n=100
5 Correct 1 ms 304 KB n=100
6 Correct 1 ms 300 KB n=100
7 Correct 1 ms 300 KB n=100
8 Correct 1 ms 340 KB n=100
9 Correct 1 ms 340 KB n=100
10 Correct 1 ms 340 KB n=100
11 Correct 1 ms 340 KB n=100
12 Correct 1 ms 340 KB n=100
13 Correct 1 ms 340 KB n=100
14 Correct 1 ms 340 KB n=100
15 Correct 1 ms 340 KB n=100
16 Correct 1 ms 340 KB n=100
17 Correct 1 ms 296 KB n=100
18 Correct 1 ms 340 KB n=100
19 Correct 1 ms 340 KB n=100
20 Correct 1 ms 340 KB n=100
21 Correct 1 ms 340 KB n=100
22 Correct 1 ms 296 KB n=100
23 Correct 1 ms 340 KB n=100
24 Correct 1 ms 340 KB n=100
25 Correct 1 ms 340 KB n=100
26 Correct 1 ms 212 KB n=12
27 Correct 1 ms 340 KB n=100
28 Correct 2 ms 468 KB n=500
29 Correct 2 ms 468 KB n=500
30 Correct 2 ms 468 KB n=500
31 Correct 2 ms 468 KB n=500
32 Correct 2 ms 468 KB n=500
33 Correct 2 ms 468 KB n=500
34 Correct 2 ms 440 KB n=500
35 Correct 2 ms 468 KB n=500
36 Correct 2 ms 468 KB n=500
37 Correct 2 ms 468 KB n=500
38 Correct 2 ms 468 KB n=500
39 Correct 2 ms 468 KB n=500
40 Correct 2 ms 468 KB n=500
41 Correct 2 ms 468 KB n=500
42 Correct 2 ms 468 KB n=500
43 Correct 2 ms 436 KB n=500
44 Correct 2 ms 436 KB n=500
45 Correct 2 ms 468 KB n=500
46 Correct 2 ms 468 KB n=500
47 Correct 3 ms 440 KB n=500
48 Correct 2 ms 468 KB n=500
49 Correct 2 ms 468 KB n=500
50 Correct 2 ms 444 KB n=500
51 Correct 2 ms 440 KB n=500
52 Correct 2 ms 440 KB n=500
53 Correct 2 ms 468 KB n=500
54 Correct 2 ms 468 KB n=500
55 Correct 1 ms 340 KB n=278
56 Correct 2 ms 468 KB n=500
57 Correct 2 ms 468 KB n=500
58 Correct 2 ms 468 KB n=500
59 Correct 7 ms 1108 KB n=2000
60 Correct 8 ms 1108 KB n=2000
61 Correct 7 ms 1108 KB n=2000
62 Correct 7 ms 1212 KB n=2000
63 Correct 7 ms 1108 KB n=2000
64 Correct 8 ms 1204 KB n=2000
65 Correct 7 ms 1092 KB n=2000
66 Correct 7 ms 1108 KB n=2000
67 Correct 7 ms 1108 KB n=2000
68 Correct 7 ms 1080 KB n=2000
69 Correct 7 ms 1204 KB n=2000
70 Correct 7 ms 1108 KB n=2000
71 Correct 7 ms 1208 KB n=2000
72 Correct 8 ms 1108 KB n=2000
73 Correct 7 ms 1108 KB n=2000
74 Correct 6 ms 1108 KB n=1844
75 Correct 7 ms 1108 KB n=2000
76 Correct 8 ms 1108 KB n=2000
77 Correct 7 ms 1208 KB n=2000
78 Correct 7 ms 1108 KB n=2000
79 Correct 7 ms 1092 KB n=2000
80 Correct 7 ms 1108 KB n=2000
81 Correct 8 ms 1208 KB n=2000
82 Correct 7 ms 1108 KB n=2000
83 Correct 7 ms 1108 KB n=2000
84 Correct 7 ms 1108 KB n=2000
85 Correct 7 ms 1108 KB n=2000
86 Correct 7 ms 1108 KB n=2000
87 Correct 7 ms 1108 KB n=2000
88 Correct 7 ms 1076 KB n=2000
89 Correct 7 ms 1076 KB n=2000
90 Correct 7 ms 1088 KB n=2000
91 Correct 9 ms 1108 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB n=5
2 Correct 1 ms 304 KB n=100
3 Correct 1 ms 440 KB n=100
4 Correct 1 ms 340 KB n=100
5 Correct 1 ms 304 KB n=100
6 Correct 1 ms 300 KB n=100
7 Correct 1 ms 300 KB n=100
8 Correct 1 ms 340 KB n=100
9 Correct 1 ms 340 KB n=100
10 Correct 1 ms 340 KB n=100
11 Correct 1 ms 340 KB n=100
12 Correct 1 ms 340 KB n=100
13 Correct 1 ms 340 KB n=100
14 Correct 1 ms 340 KB n=100
15 Correct 1 ms 340 KB n=100
16 Correct 1 ms 340 KB n=100
17 Correct 1 ms 296 KB n=100
18 Correct 1 ms 340 KB n=100
19 Correct 1 ms 340 KB n=100
20 Correct 1 ms 340 KB n=100
21 Correct 1 ms 340 KB n=100
22 Correct 1 ms 296 KB n=100
23 Correct 1 ms 340 KB n=100
24 Correct 1 ms 340 KB n=100
25 Correct 1 ms 340 KB n=100
26 Correct 1 ms 212 KB n=12
27 Correct 1 ms 340 KB n=100
28 Correct 2 ms 468 KB n=500
29 Correct 2 ms 468 KB n=500
30 Correct 2 ms 468 KB n=500
31 Correct 2 ms 468 KB n=500
32 Correct 2 ms 468 KB n=500
33 Correct 2 ms 468 KB n=500
34 Correct 2 ms 440 KB n=500
35 Correct 2 ms 468 KB n=500
36 Correct 2 ms 468 KB n=500
37 Correct 2 ms 468 KB n=500
38 Correct 2 ms 468 KB n=500
39 Correct 2 ms 468 KB n=500
40 Correct 2 ms 468 KB n=500
41 Correct 2 ms 468 KB n=500
42 Correct 2 ms 468 KB n=500
43 Correct 2 ms 436 KB n=500
44 Correct 2 ms 436 KB n=500
45 Correct 2 ms 468 KB n=500
46 Correct 2 ms 468 KB n=500
47 Correct 3 ms 440 KB n=500
48 Correct 2 ms 468 KB n=500
49 Correct 2 ms 468 KB n=500
50 Correct 2 ms 444 KB n=500
51 Correct 2 ms 440 KB n=500
52 Correct 2 ms 440 KB n=500
53 Correct 2 ms 468 KB n=500
54 Correct 2 ms 468 KB n=500
55 Correct 1 ms 340 KB n=278
56 Correct 2 ms 468 KB n=500
57 Correct 2 ms 468 KB n=500
58 Correct 2 ms 468 KB n=500
59 Correct 7 ms 1108 KB n=2000
60 Correct 8 ms 1108 KB n=2000
61 Correct 7 ms 1108 KB n=2000
62 Correct 7 ms 1212 KB n=2000
63 Correct 7 ms 1108 KB n=2000
64 Correct 8 ms 1204 KB n=2000
65 Correct 7 ms 1092 KB n=2000
66 Correct 7 ms 1108 KB n=2000
67 Correct 7 ms 1108 KB n=2000
68 Correct 7 ms 1080 KB n=2000
69 Correct 7 ms 1204 KB n=2000
70 Correct 7 ms 1108 KB n=2000
71 Correct 7 ms 1208 KB n=2000
72 Correct 8 ms 1108 KB n=2000
73 Correct 7 ms 1108 KB n=2000
74 Correct 6 ms 1108 KB n=1844
75 Correct 7 ms 1108 KB n=2000
76 Correct 8 ms 1108 KB n=2000
77 Correct 7 ms 1208 KB n=2000
78 Correct 7 ms 1108 KB n=2000
79 Correct 7 ms 1092 KB n=2000
80 Correct 7 ms 1108 KB n=2000
81 Correct 8 ms 1208 KB n=2000
82 Correct 7 ms 1108 KB n=2000
83 Correct 7 ms 1108 KB n=2000
84 Correct 7 ms 1108 KB n=2000
85 Correct 7 ms 1108 KB n=2000
86 Correct 7 ms 1108 KB n=2000
87 Correct 7 ms 1108 KB n=2000
88 Correct 7 ms 1076 KB n=2000
89 Correct 7 ms 1076 KB n=2000
90 Correct 7 ms 1088 KB n=2000
91 Correct 9 ms 1108 KB n=2000
92 Correct 1146 ms 93364 KB n=200000
93 Correct 1505 ms 93580 KB n=200000
94 Correct 1509 ms 93544 KB n=200000
95 Correct 1181 ms 93128 KB n=200000
96 Correct 1135 ms 93316 KB n=200000
97 Correct 1632 ms 93568 KB n=200000
98 Correct 1241 ms 93120 KB n=200000
99 Correct 1314 ms 93428 KB n=200000
100 Correct 1137 ms 93236 KB n=200000
101 Correct 1554 ms 93632 KB n=200000
102 Correct 912 ms 94340 KB n=200000
103 Correct 918 ms 94404 KB n=200000
104 Correct 902 ms 94396 KB n=200000
105 Correct 943 ms 94768 KB n=200000
106 Correct 949 ms 94768 KB n=200000
107 Correct 912 ms 94788 KB n=200000
108 Correct 1329 ms 93372 KB n=200000
109 Correct 1345 ms 93360 KB n=200000
110 Correct 1331 ms 93216 KB n=200000
111 Correct 1100 ms 92876 KB n=200000
112 Correct 1379 ms 93500 KB n=200000
113 Correct 1483 ms 93592 KB n=200000
114 Correct 1126 ms 92780 KB n=200000
115 Correct 1721 ms 93836 KB n=200000
116 Correct 1164 ms 93380 KB n=200000
117 Correct 1402 ms 93400 KB n=200000
118 Correct 1635 ms 93540 KB n=200000
119 Correct 1163 ms 93368 KB n=200000
120 Correct 1421 ms 92480 KB n=200000
121 Correct 1361 ms 92448 KB n=200000
122 Correct 1483 ms 92896 KB n=200000
123 Correct 1004 ms 94700 KB n=200000
124 Correct 333 ms 19528 KB n=25264