oj.uz

Submission #873583

# Submission time Handle Problem Language Result Execution time Memory
873583 2023-11-15T10:23:00 Z epicci23 Birthday gift (IZhO18_treearray) C++17
30 / 100
 4000 ms 9320 KB 
#include "bits/stdc++.h"
using namespace std;
#define int long long
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
#define endl "\n"
#define pb push_back

/*
 dont get stuck on one approach
 write stuff on paper
 edge cases(n=1?)
 look for : dp,bs,bf,observations...
 implement and debug smarter
*/


const int N = 2e5;
const int LOG = 20;

vector<int> v[N];
int lift[N][LOG];
int depth[N];
void dfs(int c,int p,int d){
  depth[c]=d;
  lift[c][0]=p;
  for(int i=1;i<LOG;i++) lift[c][i]=lift[lift[c][i-1]][i-1];
  for(int x:v[c]){
    if(x==p) continue;
    dfs(x,c,d+1);
  }
}

int lca(int a,int b){
  if(depth[a]<depth[b]) swap(a,b);
  int x = depth[a] - depth[b];

  for(int i=0;i<LOG;i++) if(x&(1LL<<i)) a=lift[a][i];
  
  if(a==b) return a;

  for(int i=LOG-1;i>=0;i--){
    if(lift[a][i]!=lift[b][i]){
      a=lift[a][i];
      b=lift[b][i];
    }
  }
  return lift[a][0];
}


void solve(){
  int n,m,q;
  cin >> n >> m >> q;
 
  for(int i=1;i<n;i++){
    int a,b;
    cin >> a >> b;
    v[a].pb(b);
    v[b].pb(a);
  }

  dfs(1,0,0);
  
  int ar[m+5];
  for(int i=1;i<=m;i++) cin >> ar[i];

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

    if(op==1){
      int ind,u;
      cin >> ind >> u;
      ar[ind]=u;
    }
    else{
      int l,r,u;
      cin >> l >> r >> u;
      bool ok=0;
      for(int i=l;i<=r;i++){
        int cur = ar[i];
        if(ok) break;
        for(int j=i;j<=r;j++){
        //  cout << cur << " " << ar[j] << endl;
          cur=lca(cur,ar[j]);
        //  cout << i << " " << j << " lca: " << cur << endl;
          if(cur==u){
            ok=1;
            cout << i << " " << j << endl;
            break;
          }
        }
        if(ok) break;
      } 
      if(ok==0) cout << -1 << " " << -1 << endl;
    }

  }

}

int32_t main(){
  cin.tie(0);
  ios::sync_with_stdio(0);

  int t=1;//cin >> t;
  while(t--) solve();
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 9052 KB n=5
2 Correct 3 ms 9052 KB n=100
3 Correct 2 ms 9052 KB n=100
4 Correct 2 ms 9052 KB n=100
5 Correct 2 ms 9052 KB n=100
6 Correct 10 ms 9052 KB n=100
7 Correct 11 ms 9052 KB n=100
8 Correct 3 ms 9052 KB n=100
9 Correct 3 ms 9052 KB n=100
10 Correct 6 ms 9052 KB n=100
11 Correct 6 ms 9052 KB n=100
12 Correct 2 ms 9052 KB n=100
13 Correct 2 ms 9052 KB n=100
14 Correct 2 ms 9052 KB n=100
15 Correct 2 ms 9048 KB n=100
16 Correct 2 ms 9052 KB n=100
17 Correct 3 ms 9048 KB n=100
18 Correct 2 ms 9052 KB n=100
19 Correct 2 ms 9048 KB n=100
20 Correct 2 ms 9052 KB n=100
21 Correct 2 ms 9052 KB n=100
22 Correct 2 ms 9052 KB n=100
23 Correct 4 ms 9052 KB n=100
24 Correct 4 ms 9052 KB n=100
25 Correct 3 ms 9052 KB n=100
26 Correct 2 ms 9052 KB n=12
27 Correct 5 ms 9128 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 9052 KB n=5
2 Correct 3 ms 9052 KB n=100
3 Correct 2 ms 9052 KB n=100
4 Correct 2 ms 9052 KB n=100
5 Correct 2 ms 9052 KB n=100
6 Correct 10 ms 9052 KB n=100
7 Correct 11 ms 9052 KB n=100
8 Correct 3 ms 9052 KB n=100
9 Correct 3 ms 9052 KB n=100
10 Correct 6 ms 9052 KB n=100
11 Correct 6 ms 9052 KB n=100
12 Correct 2 ms 9052 KB n=100
13 Correct 2 ms 9052 KB n=100
14 Correct 2 ms 9052 KB n=100
15 Correct 2 ms 9048 KB n=100
16 Correct 2 ms 9052 KB n=100
17 Correct 3 ms 9048 KB n=100
18 Correct 2 ms 9052 KB n=100
19 Correct 2 ms 9048 KB n=100
20 Correct 2 ms 9052 KB n=100
21 Correct 2 ms 9052 KB n=100
22 Correct 2 ms 9052 KB n=100
23 Correct 4 ms 9052 KB n=100
24 Correct 4 ms 9052 KB n=100
25 Correct 3 ms 9052 KB n=100
26 Correct 2 ms 9052 KB n=12
27 Correct 5 ms 9128 KB n=100
28 Correct 3 ms 9052 KB n=500
29 Correct 114 ms 9152 KB n=500
30 Correct 83 ms 9208 KB n=500
31 Correct 91 ms 9148 KB n=500
32 Correct 5 ms 9052 KB n=500
33 Correct 70 ms 9304 KB n=500
34 Correct 2 ms 9052 KB n=500
35 Correct 105 ms 9048 KB n=500
36 Correct 1147 ms 9136 KB n=500
37 Correct 1199 ms 9136 KB n=500
38 Correct 1160 ms 9304 KB n=500
39 Correct 124 ms 9048 KB n=500
40 Correct 142 ms 9140 KB n=500
41 Correct 121 ms 9144 KB n=500
42 Correct 559 ms 9136 KB n=500
43 Correct 581 ms 9052 KB n=500
44 Correct 542 ms 9052 KB n=500
45 Correct 3 ms 9128 KB n=500
46 Correct 109 ms 9156 KB n=500
47 Correct 87 ms 9308 KB n=500
48 Correct 2 ms 9052 KB n=500
49 Correct 78 ms 9052 KB n=500
50 Correct 91 ms 9048 KB n=500
51 Correct 138 ms 9052 KB n=500
52 Correct 175 ms 9052 KB n=500
53 Correct 162 ms 9048 KB n=500
54 Correct 66 ms 9052 KB n=500
55 Correct 18 ms 9048 KB n=278
56 Correct 651 ms 9152 KB n=500
57 Correct 679 ms 9148 KB n=500
58 Correct 465 ms 9296 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 9052 KB n=5
2 Correct 3 ms 9052 KB n=100
3 Correct 2 ms 9052 KB n=100
4 Correct 2 ms 9052 KB n=100
5 Correct 2 ms 9052 KB n=100
6 Correct 10 ms 9052 KB n=100
7 Correct 11 ms 9052 KB n=100
8 Correct 3 ms 9052 KB n=100
9 Correct 3 ms 9052 KB n=100
10 Correct 6 ms 9052 KB n=100
11 Correct 6 ms 9052 KB n=100
12 Correct 2 ms 9052 KB n=100
13 Correct 2 ms 9052 KB n=100
14 Correct 2 ms 9052 KB n=100
15 Correct 2 ms 9048 KB n=100
16 Correct 2 ms 9052 KB n=100
17 Correct 3 ms 9048 KB n=100
18 Correct 2 ms 9052 KB n=100
19 Correct 2 ms 9048 KB n=100
20 Correct 2 ms 9052 KB n=100
21 Correct 2 ms 9052 KB n=100
22 Correct 2 ms 9052 KB n=100
23 Correct 4 ms 9052 KB n=100
24 Correct 4 ms 9052 KB n=100
25 Correct 3 ms 9052 KB n=100
26 Correct 2 ms 9052 KB n=12
27 Correct 5 ms 9128 KB n=100
28 Correct 3 ms 9052 KB n=500
29 Correct 114 ms 9152 KB n=500
30 Correct 83 ms 9208 KB n=500
31 Correct 91 ms 9148 KB n=500
32 Correct 5 ms 9052 KB n=500
33 Correct 70 ms 9304 KB n=500
34 Correct 2 ms 9052 KB n=500
35 Correct 105 ms 9048 KB n=500
36 Correct 1147 ms 9136 KB n=500
37 Correct 1199 ms 9136 KB n=500
38 Correct 1160 ms 9304 KB n=500
39 Correct 124 ms 9048 KB n=500
40 Correct 142 ms 9140 KB n=500
41 Correct 121 ms 9144 KB n=500
42 Correct 559 ms 9136 KB n=500
43 Correct 581 ms 9052 KB n=500
44 Correct 542 ms 9052 KB n=500
45 Correct 3 ms 9128 KB n=500
46 Correct 109 ms 9156 KB n=500
47 Correct 87 ms 9308 KB n=500
48 Correct 2 ms 9052 KB n=500
49 Correct 78 ms 9052 KB n=500
50 Correct 91 ms 9048 KB n=500
51 Correct 138 ms 9052 KB n=500
52 Correct 175 ms 9052 KB n=500
53 Correct 162 ms 9048 KB n=500
54 Correct 66 ms 9052 KB n=500
55 Correct 18 ms 9048 KB n=278
56 Correct 651 ms 9152 KB n=500
57 Correct 679 ms 9148 KB n=500
58 Correct 465 ms 9296 KB n=500
59 Correct 60 ms 9048 KB n=2000
60 Execution timed out 4040 ms 9320 KB Time limit exceeded
61 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 9052 KB n=5
2 Correct 3 ms 9052 KB n=100
3 Correct 2 ms 9052 KB n=100
4 Correct 2 ms 9052 KB n=100
5 Correct 2 ms 9052 KB n=100
6 Correct 10 ms 9052 KB n=100
7 Correct 11 ms 9052 KB n=100
8 Correct 3 ms 9052 KB n=100
9 Correct 3 ms 9052 KB n=100
10 Correct 6 ms 9052 KB n=100
11 Correct 6 ms 9052 KB n=100
12 Correct 2 ms 9052 KB n=100
13 Correct 2 ms 9052 KB n=100
14 Correct 2 ms 9052 KB n=100
15 Correct 2 ms 9048 KB n=100
16 Correct 2 ms 9052 KB n=100
17 Correct 3 ms 9048 KB n=100
18 Correct 2 ms 9052 KB n=100
19 Correct 2 ms 9048 KB n=100
20 Correct 2 ms 9052 KB n=100
21 Correct 2 ms 9052 KB n=100
22 Correct 2 ms 9052 KB n=100
23 Correct 4 ms 9052 KB n=100
24 Correct 4 ms 9052 KB n=100
25 Correct 3 ms 9052 KB n=100
26 Correct 2 ms 9052 KB n=12
27 Correct 5 ms 9128 KB n=100
28 Correct 3 ms 9052 KB n=500
29 Correct 114 ms 9152 KB n=500
30 Correct 83 ms 9208 KB n=500
31 Correct 91 ms 9148 KB n=500
32 Correct 5 ms 9052 KB n=500
33 Correct 70 ms 9304 KB n=500
34 Correct 2 ms 9052 KB n=500
35 Correct 105 ms 9048 KB n=500
36 Correct 1147 ms 9136 KB n=500
37 Correct 1199 ms 9136 KB n=500
38 Correct 1160 ms 9304 KB n=500
39 Correct 124 ms 9048 KB n=500
40 Correct 142 ms 9140 KB n=500
41 Correct 121 ms 9144 KB n=500
42 Correct 559 ms 9136 KB n=500
43 Correct 581 ms 9052 KB n=500
44 Correct 542 ms 9052 KB n=500
45 Correct 3 ms 9128 KB n=500
46 Correct 109 ms 9156 KB n=500
47 Correct 87 ms 9308 KB n=500
48 Correct 2 ms 9052 KB n=500
49 Correct 78 ms 9052 KB n=500
50 Correct 91 ms 9048 KB n=500
51 Correct 138 ms 9052 KB n=500
52 Correct 175 ms 9052 KB n=500
53 Correct 162 ms 9048 KB n=500
54 Correct 66 ms 9052 KB n=500
55 Correct 18 ms 9048 KB n=278
56 Correct 651 ms 9152 KB n=500
57 Correct 679 ms 9148 KB n=500
58 Correct 465 ms 9296 KB n=500
59 Correct 60 ms 9048 KB n=2000
60 Execution timed out 4040 ms 9320 KB Time limit exceeded
61 Halted 0 ms 0 KB -