oj.uz

Submission #653621

# Submission time Handle Problem Language Result Execution time Memory
653621 2022-10-27T12:08:40 Z pauloamed Birthday gift (IZhO18_treearray) C++14
100 / 100
 1427 ms 75136 KB 
#include<bits/stdc++.h>
using namespace std;

const int MAXN = 200000;
const int MAXLOG = 20;

vector<int> g[MAXN];

namespace lca{
  int st[MAXN][MAXLOG], d[MAXN];

  void get_par(int x, int p){
    st[x][0] = p;
    if(p != -1) d[x] = d[p] + 1;
    for(auto y : g[x]) if(y != p) get_par(y, x);
  }

  void init(int root, int n){
    get_par(root, -1);
    for(int l = 1; l < MAXLOG; ++l) for(int i = 0; i < MAXN; ++i){
      if(st[i][l-1] == -1) st[i][l] = -1;
      else st[i][l] = st[st[i][l-1]][l-1];
    }
  }

  int lca(int x, int y){
      if(d[x] < d[y]) swap(x, y);
      int falta_subir = (d[x] - d[y]);
      for(int i = MAXLOG-1; i >= 0; --i) if((1<<i) <= falta_subir){
        falta_subir -= (1<<i);
        x = st[x][i];
      }
      if(x == y) return x;
      for(int i = MAXLOG-1; i >= 0; --i) if(st[x][i] != st[y][i])
        x = st[x][i], y = st[y][i];
      return st[x][0];
  }

  int dist(int a, int b){
    int x = lca(a, b);
    return (d[a] - d[x]) + (d[b] - d[x]);
  }
}

namespace solver{
  int v[2*MAXN];
  set<int> v2pos[MAXN];
  int n;

  void set_val(int i, int x){
    v2pos[v[i]].erase(i);
    v[i] = x;
    v2pos[v[i]].insert(i);
  }

  int get_idx(int i){ return i * 2; }
  void add(int i, int x){
    i = get_idx(i);

    set_val(i, x);

    // for(int j = 0; j <= get_idx(n - 1); ++j){
    //   cout << v[j] << " ";
    // }cout << "\n";

    if(i > 0){
      set_val(i - 1, lca::lca(v[i - 2], v[i]));
    }

    if(i < get_idx(n - 1)){
      set_val(i + 1, lca::lca(v[i], v[i + 2]));
    }
  }

  pair<int,int> query(int l, int r, int x){
    l = get_idx(l);
    r = get_idx(r);

    auto it = v2pos[x].lower_bound(l);
    if(it == v2pos[x].end() || *it > r) return {-1, -1};
    else{
      int i = *it;
      if(*it % 2 == 1){
        return {(i - 1) / 2, (i + 1) / 2};
      }else{
        return {i / 2, i / 2};
      }
    }
  }
}

int main(){
  int n, m, q; cin >> n >> m >> q;
  for(int i = 0; i < n - 1; ++i){
    int a, b; cin >> a >> b;
    a--; b--;
    g[a].push_back(b);
    g[b].push_back(a);
  }

  lca::init(0, n);
  solver::n = m;
  for(int i = 0; i <= solver::get_idx(m - 1); ++i){
    solver::v2pos[0].insert(i);
  }

  for(int i = 0; i < m; ++i){
    int x; cin >> x; x--;
    solver::add(i, x);
  }

  for(int i = 0; i < q; ++i){
    int id; cin >> id;
    if(id == 1){
      int i, v; cin >> i >> v;
      i--; v--;
      solver::add(i, v);
    }else{
      int l, r, x; cin >> l >> r >> x;
      l--; r--; x--;
      auto ret = solver::query(l, r, x);
      if(ret.first == -1) cout << "-1 -1\n";
      else{
        cout << ret.first + 1 << " " << ret.second + 1 << "\n";
      }
    }
  }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 30036 KB n=5
2 Correct 45 ms 30044 KB n=100
3 Correct 45 ms 29992 KB n=100
4 Correct 44 ms 30036 KB n=100
5 Correct 44 ms 29996 KB n=100
6 Correct 43 ms 30048 KB n=100
7 Correct 45 ms 30056 KB n=100
8 Correct 45 ms 30044 KB n=100
9 Correct 44 ms 30052 KB n=100
10 Correct 45 ms 30036 KB n=100
11 Correct 45 ms 30044 KB n=100
12 Correct 46 ms 30044 KB n=100
13 Correct 45 ms 30036 KB n=100
14 Correct 44 ms 30056 KB n=100
15 Correct 45 ms 30036 KB n=100
16 Correct 44 ms 30044 KB n=100
17 Correct 45 ms 30156 KB n=100
18 Correct 43 ms 30036 KB n=100
19 Correct 43 ms 30056 KB n=100
20 Correct 46 ms 30044 KB n=100
21 Correct 47 ms 30036 KB n=100
22 Correct 45 ms 30008 KB n=100
23 Correct 44 ms 30044 KB n=100
24 Correct 46 ms 30044 KB n=100
25 Correct 48 ms 30000 KB n=100
26 Correct 45 ms 30016 KB n=12
27 Correct 46 ms 30056 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 30036 KB n=5
2 Correct 45 ms 30044 KB n=100
3 Correct 45 ms 29992 KB n=100
4 Correct 44 ms 30036 KB n=100
5 Correct 44 ms 29996 KB n=100
6 Correct 43 ms 30048 KB n=100
7 Correct 45 ms 30056 KB n=100
8 Correct 45 ms 30044 KB n=100
9 Correct 44 ms 30052 KB n=100
10 Correct 45 ms 30036 KB n=100
11 Correct 45 ms 30044 KB n=100
12 Correct 46 ms 30044 KB n=100
13 Correct 45 ms 30036 KB n=100
14 Correct 44 ms 30056 KB n=100
15 Correct 45 ms 30036 KB n=100
16 Correct 44 ms 30044 KB n=100
17 Correct 45 ms 30156 KB n=100
18 Correct 43 ms 30036 KB n=100
19 Correct 43 ms 30056 KB n=100
20 Correct 46 ms 30044 KB n=100
21 Correct 47 ms 30036 KB n=100
22 Correct 45 ms 30008 KB n=100
23 Correct 44 ms 30044 KB n=100
24 Correct 46 ms 30044 KB n=100
25 Correct 48 ms 30000 KB n=100
26 Correct 45 ms 30016 KB n=12
27 Correct 46 ms 30056 KB n=100
28 Correct 47 ms 30072 KB n=500
29 Correct 45 ms 30112 KB n=500
30 Correct 46 ms 30080 KB n=500
31 Correct 45 ms 30084 KB n=500
32 Correct 44 ms 30024 KB n=500
33 Correct 45 ms 30112 KB n=500
34 Correct 44 ms 30076 KB n=500
35 Correct 47 ms 30100 KB n=500
36 Correct 46 ms 30120 KB n=500
37 Correct 45 ms 30036 KB n=500
38 Correct 45 ms 30080 KB n=500
39 Correct 46 ms 30072 KB n=500
40 Correct 45 ms 30036 KB n=500
41 Correct 46 ms 30156 KB n=500
42 Correct 45 ms 30080 KB n=500
43 Correct 45 ms 30068 KB n=500
44 Correct 45 ms 30036 KB n=500
45 Correct 46 ms 30088 KB n=500
46 Correct 48 ms 30128 KB n=500
47 Correct 48 ms 30036 KB n=500
48 Correct 45 ms 30020 KB n=500
49 Correct 45 ms 30088 KB n=500
50 Correct 45 ms 30084 KB n=500
51 Correct 45 ms 30156 KB n=500
52 Correct 44 ms 30100 KB n=500
53 Correct 46 ms 30072 KB n=500
54 Correct 45 ms 30036 KB n=500
55 Correct 45 ms 30068 KB n=278
56 Correct 48 ms 30088 KB n=500
57 Correct 45 ms 30036 KB n=500
58 Correct 46 ms 30176 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 30036 KB n=5
2 Correct 45 ms 30044 KB n=100
3 Correct 45 ms 29992 KB n=100
4 Correct 44 ms 30036 KB n=100
5 Correct 44 ms 29996 KB n=100
6 Correct 43 ms 30048 KB n=100
7 Correct 45 ms 30056 KB n=100
8 Correct 45 ms 30044 KB n=100
9 Correct 44 ms 30052 KB n=100
10 Correct 45 ms 30036 KB n=100
11 Correct 45 ms 30044 KB n=100
12 Correct 46 ms 30044 KB n=100
13 Correct 45 ms 30036 KB n=100
14 Correct 44 ms 30056 KB n=100
15 Correct 45 ms 30036 KB n=100
16 Correct 44 ms 30044 KB n=100
17 Correct 45 ms 30156 KB n=100
18 Correct 43 ms 30036 KB n=100
19 Correct 43 ms 30056 KB n=100
20 Correct 46 ms 30044 KB n=100
21 Correct 47 ms 30036 KB n=100
22 Correct 45 ms 30008 KB n=100
23 Correct 44 ms 30044 KB n=100
24 Correct 46 ms 30044 KB n=100
25 Correct 48 ms 30000 KB n=100
26 Correct 45 ms 30016 KB n=12
27 Correct 46 ms 30056 KB n=100
28 Correct 47 ms 30072 KB n=500
29 Correct 45 ms 30112 KB n=500
30 Correct 46 ms 30080 KB n=500
31 Correct 45 ms 30084 KB n=500
32 Correct 44 ms 30024 KB n=500
33 Correct 45 ms 30112 KB n=500
34 Correct 44 ms 30076 KB n=500
35 Correct 47 ms 30100 KB n=500
36 Correct 46 ms 30120 KB n=500
37 Correct 45 ms 30036 KB n=500
38 Correct 45 ms 30080 KB n=500
39 Correct 46 ms 30072 KB n=500
40 Correct 45 ms 30036 KB n=500
41 Correct 46 ms 30156 KB n=500
42 Correct 45 ms 30080 KB n=500
43 Correct 45 ms 30068 KB n=500
44 Correct 45 ms 30036 KB n=500
45 Correct 46 ms 30088 KB n=500
46 Correct 48 ms 30128 KB n=500
47 Correct 48 ms 30036 KB n=500
48 Correct 45 ms 30020 KB n=500
49 Correct 45 ms 30088 KB n=500
50 Correct 45 ms 30084 KB n=500
51 Correct 45 ms 30156 KB n=500
52 Correct 44 ms 30100 KB n=500
53 Correct 46 ms 30072 KB n=500
54 Correct 45 ms 30036 KB n=500
55 Correct 45 ms 30068 KB n=278
56 Correct 48 ms 30088 KB n=500
57 Correct 45 ms 30036 KB n=500
58 Correct 46 ms 30176 KB n=500
59 Correct 50 ms 30300 KB n=2000
60 Correct 50 ms 30376 KB n=2000
61 Correct 51 ms 30368 KB n=2000
62 Correct 51 ms 30328 KB n=2000
63 Correct 50 ms 30308 KB n=2000
64 Correct 50 ms 30392 KB n=2000
65 Correct 52 ms 30312 KB n=2000
66 Correct 52 ms 30412 KB n=2000
67 Correct 52 ms 30332 KB n=2000
68 Correct 52 ms 30408 KB n=2000
69 Correct 50 ms 30284 KB n=2000
70 Correct 54 ms 30412 KB n=2000
71 Correct 50 ms 30304 KB n=2000
72 Correct 50 ms 30300 KB n=2000
73 Correct 51 ms 30284 KB n=2000
74 Correct 49 ms 30292 KB n=1844
75 Correct 51 ms 30284 KB n=2000
76 Correct 50 ms 30364 KB n=2000
77 Correct 51 ms 30300 KB n=2000
78 Correct 52 ms 30368 KB n=2000
79 Correct 52 ms 30304 KB n=2000
80 Correct 52 ms 30372 KB n=2000
81 Correct 49 ms 30328 KB n=2000
82 Correct 50 ms 30284 KB n=2000
83 Correct 55 ms 30352 KB n=2000
84 Correct 67 ms 30420 KB n=2000
85 Correct 65 ms 30380 KB n=2000
86 Correct 64 ms 30404 KB n=2000
87 Correct 62 ms 30300 KB n=2000
88 Correct 63 ms 30460 KB n=2000
89 Correct 62 ms 30408 KB n=2000
90 Correct 64 ms 30388 KB n=2000
91 Correct 61 ms 30284 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 30036 KB n=5
2 Correct 45 ms 30044 KB n=100
3 Correct 45 ms 29992 KB n=100
4 Correct 44 ms 30036 KB n=100
5 Correct 44 ms 29996 KB n=100
6 Correct 43 ms 30048 KB n=100
7 Correct 45 ms 30056 KB n=100
8 Correct 45 ms 30044 KB n=100
9 Correct 44 ms 30052 KB n=100
10 Correct 45 ms 30036 KB n=100
11 Correct 45 ms 30044 KB n=100
12 Correct 46 ms 30044 KB n=100
13 Correct 45 ms 30036 KB n=100
14 Correct 44 ms 30056 KB n=100
15 Correct 45 ms 30036 KB n=100
16 Correct 44 ms 30044 KB n=100
17 Correct 45 ms 30156 KB n=100
18 Correct 43 ms 30036 KB n=100
19 Correct 43 ms 30056 KB n=100
20 Correct 46 ms 30044 KB n=100
21 Correct 47 ms 30036 KB n=100
22 Correct 45 ms 30008 KB n=100
23 Correct 44 ms 30044 KB n=100
24 Correct 46 ms 30044 KB n=100
25 Correct 48 ms 30000 KB n=100
26 Correct 45 ms 30016 KB n=12
27 Correct 46 ms 30056 KB n=100
28 Correct 47 ms 30072 KB n=500
29 Correct 45 ms 30112 KB n=500
30 Correct 46 ms 30080 KB n=500
31 Correct 45 ms 30084 KB n=500
32 Correct 44 ms 30024 KB n=500
33 Correct 45 ms 30112 KB n=500
34 Correct 44 ms 30076 KB n=500
35 Correct 47 ms 30100 KB n=500
36 Correct 46 ms 30120 KB n=500
37 Correct 45 ms 30036 KB n=500
38 Correct 45 ms 30080 KB n=500
39 Correct 46 ms 30072 KB n=500
40 Correct 45 ms 30036 KB n=500
41 Correct 46 ms 30156 KB n=500
42 Correct 45 ms 30080 KB n=500
43 Correct 45 ms 30068 KB n=500
44 Correct 45 ms 30036 KB n=500
45 Correct 46 ms 30088 KB n=500
46 Correct 48 ms 30128 KB n=500
47 Correct 48 ms 30036 KB n=500
48 Correct 45 ms 30020 KB n=500
49 Correct 45 ms 30088 KB n=500
50 Correct 45 ms 30084 KB n=500
51 Correct 45 ms 30156 KB n=500
52 Correct 44 ms 30100 KB n=500
53 Correct 46 ms 30072 KB n=500
54 Correct 45 ms 30036 KB n=500
55 Correct 45 ms 30068 KB n=278
56 Correct 48 ms 30088 KB n=500
57 Correct 45 ms 30036 KB n=500
58 Correct 46 ms 30176 KB n=500
59 Correct 50 ms 30300 KB n=2000
60 Correct 50 ms 30376 KB n=2000
61 Correct 51 ms 30368 KB n=2000
62 Correct 51 ms 30328 KB n=2000
63 Correct 50 ms 30308 KB n=2000
64 Correct 50 ms 30392 KB n=2000
65 Correct 52 ms 30312 KB n=2000
66 Correct 52 ms 30412 KB n=2000
67 Correct 52 ms 30332 KB n=2000
68 Correct 52 ms 30408 KB n=2000
69 Correct 50 ms 30284 KB n=2000
70 Correct 54 ms 30412 KB n=2000
71 Correct 50 ms 30304 KB n=2000
72 Correct 50 ms 30300 KB n=2000
73 Correct 51 ms 30284 KB n=2000
74 Correct 49 ms 30292 KB n=1844
75 Correct 51 ms 30284 KB n=2000
76 Correct 50 ms 30364 KB n=2000
77 Correct 51 ms 30300 KB n=2000
78 Correct 52 ms 30368 KB n=2000
79 Correct 52 ms 30304 KB n=2000
80 Correct 52 ms 30372 KB n=2000
81 Correct 49 ms 30328 KB n=2000
82 Correct 50 ms 30284 KB n=2000
83 Correct 55 ms 30352 KB n=2000
84 Correct 67 ms 30420 KB n=2000
85 Correct 65 ms 30380 KB n=2000
86 Correct 64 ms 30404 KB n=2000
87 Correct 62 ms 30300 KB n=2000
88 Correct 63 ms 30460 KB n=2000
89 Correct 62 ms 30408 KB n=2000
90 Correct 64 ms 30388 KB n=2000
91 Correct 61 ms 30284 KB n=2000
92 Correct 1262 ms 66028 KB n=200000
93 Correct 1416 ms 70852 KB n=200000
94 Correct 1292 ms 74140 KB n=200000
95 Correct 1158 ms 65568 KB n=200000
96 Correct 1170 ms 65792 KB n=200000
97 Correct 1334 ms 70216 KB n=200000
98 Correct 1146 ms 65672 KB n=200000
99 Correct 1310 ms 65920 KB n=200000
100 Correct 1182 ms 65724 KB n=200000
101 Correct 1284 ms 75136 KB n=200000
102 Correct 1144 ms 66920 KB n=200000
103 Correct 1138 ms 66936 KB n=200000
104 Correct 1143 ms 66912 KB n=200000
105 Correct 1146 ms 67248 KB n=200000
106 Correct 1202 ms 67304 KB n=200000
107 Correct 1173 ms 67316 KB n=200000
108 Correct 1287 ms 65804 KB n=200000
109 Correct 1323 ms 65964 KB n=200000
110 Correct 1318 ms 65916 KB n=200000
111 Correct 1176 ms 65204 KB n=200000
112 Correct 1260 ms 74436 KB n=200000
113 Correct 1365 ms 69740 KB n=200000
114 Correct 1211 ms 65212 KB n=200000
115 Correct 1427 ms 67744 KB n=200000
116 Correct 1129 ms 65784 KB n=200000
117 Correct 1320 ms 74712 KB n=200000
118 Correct 1378 ms 68608 KB n=200000
119 Correct 1160 ms 65784 KB n=200000
120 Correct 1396 ms 74364 KB n=200000
121 Correct 1366 ms 74312 KB n=200000
122 Correct 1213 ms 74716 KB n=200000
123 Correct 1075 ms 67132 KB n=200000
124 Correct 411 ms 43280 KB n=25264