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Submission #308336

# Submission time Handle Problem Language Result Execution time Memory
308336 2020-10-01T00:02:30 Z ErdosSzekeres Klasika (COCI20_klasika) C++14
33 / 110
 2832 ms 524288 KB 
#include<bits/stdc++.h>
using namespace std;
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define pii pair<int,int>
const int MAXN = 2e5+7;
int q;
int tp[MAXN], a[MAXN], b[MAXN], d[MAXN], t=0, ent[MAXN], sai[MAXN];
int fe[8*MAXN], fd[8*MAXN], node_counter = 0;
set<int> aux[8*MAXN];//entry times
int create(){
    node_counter++;
    fe[node_counter] = -1;
    fd[node_counter] = -1;
    aux[node_counter].insert((1<<30)+1);
    return node_counter;
}
vector<pii> G[MAXN];
void inserir(int idx, int depth, int val, int et){
    aux[idx].insert(et);
    if(depth < 0)return;
    if((val&(1<<depth))){//go right
        if(fd[idx] == -1)fd[idx] = create();
        inserir(fd[idx], depth-1, val, et);
    }else{
        if(fe[idx] == -1)fe[idx] = create();
        inserir(fe[idx], depth-1, val, et);
    }
}
void dfs(int u){
    t++; ent[u] = t;
    for(pii viz : G[u]){
        d[viz.first] = (d[u]^viz.second);
        dfs(viz.first);
    }
    sai[u] = t;
}
int query(int idx, int depth, int val, int node){
    if(depth < 0)return 0;
    if((val&(1<<depth))){//i want to go left
        if(fe[idx] == -1){//but i cant
            return query(fd[idx], depth-1, val, node);
        }else{
            int tst = *aux[fe[idx]].lower_bound(ent[node]);
            if(tst>=ent[node] && tst <= sai[node]){//go!!
                //cout<<tst<<" "<<ent[node]<<" "<<sai[node]<<"  --> "<<node<<endl;
                return (1<<depth) + query(fe[idx], depth-1, val, node);
            }
            return query(fd[idx], depth-1, val, node);
        }
    }else{//i want to go right
        if(fd[idx] == -1){//but i cant
            return query(fe[idx], depth-1, val, node);
        }else{
            int tst = *aux[fd[idx]].lower_bound(ent[node]);
            if(tst>=ent[node] && tst <= sai[node]){//go!!
                //cout<<tst<<" "<<ent[node]<<" "<<sai[node]<<"  --> "<<node<<endl;
                return (1<<depth) + query(fd[idx], depth-1, val, node);
            }
            return query(fe[idx], depth-1, val, node);
        }
    }
}
int main(){
    fastio; cin>>q;
    for(int i=0; i<q; i++){
        string ii; cin>>ii>>a[i]>>b[i];
        tp[i] = (ii=="Add") ? 0 : 1;
    }
    int raiz = create();
    int id = 1;
    for(int i=0; i<q; i++){//build tree and compute euler tour
        if(tp[i] == 1)continue;
        id++;
        G[a[i]].push_back({id, b[i]});
    }
    dfs(1);
    inserir(1, 30, 0, ent[1]);
    id = 1;
    for(int i=0; i<q; i++){
        if(tp[i] == 0){
            id++;
            inserir(1, 30, d[id], ent[id]);
        }else{
            cout << query(raiz, 30, d[a[i]], b[i]) << endl;//max xor with d[a[i]] in subtree of b[i]
        }
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 80376 KB Output is correct
2 Correct 55 ms 80504 KB Output is correct
3 Correct 55 ms 80504 KB Output is correct
4 Correct 55 ms 80760 KB Output is correct
5 Correct 54 ms 80376 KB Output is correct
6 Correct 54 ms 80376 KB Output is correct
7 Correct 55 ms 80504 KB Output is correct
8 Correct 55 ms 80632 KB Output is correct
9 Correct 57 ms 80380 KB Output is correct
10 Correct 55 ms 80504 KB Output is correct
11 Correct 56 ms 80632 KB Output is correct
12 Correct 55 ms 80632 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 80376 KB Output is correct
2 Correct 55 ms 80504 KB Output is correct
3 Correct 55 ms 80504 KB Output is correct
4 Correct 55 ms 80760 KB Output is correct
5 Correct 54 ms 80376 KB Output is correct
6 Correct 54 ms 80376 KB Output is correct
7 Correct 55 ms 80504 KB Output is correct
8 Correct 55 ms 80632 KB Output is correct
9 Correct 57 ms 80380 KB Output is correct
10 Correct 55 ms 80504 KB Output is correct
11 Correct 56 ms 80632 KB Output is correct
12 Correct 55 ms 80632 KB Output is correct
13 Correct 63 ms 81400 KB Output is correct
14 Correct 63 ms 82552 KB Output is correct
15 Correct 67 ms 83704 KB Output is correct
16 Correct 66 ms 84600 KB Output is correct
17 Correct 64 ms 81400 KB Output is correct
18 Correct 64 ms 82424 KB Output is correct
19 Correct 66 ms 83576 KB Output is correct
20 Correct 67 ms 84472 KB Output is correct
21 Correct 63 ms 81528 KB Output is correct
22 Correct 64 ms 82424 KB Output is correct
23 Correct 66 ms 83576 KB Output is correct
24 Correct 66 ms 84472 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1506 ms 181644 KB Output is correct
2 Correct 2187 ms 275160 KB Output is correct
3 Runtime error 2832 ms 524288 KB Execution killed with signal 11 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 80376 KB Output is correct
2 Correct 55 ms 80504 KB Output is correct
3 Correct 55 ms 80504 KB Output is correct
4 Correct 55 ms 80760 KB Output is correct
5 Correct 54 ms 80376 KB Output is correct
6 Correct 54 ms 80376 KB Output is correct
7 Correct 55 ms 80504 KB Output is correct
8 Correct 55 ms 80632 KB Output is correct
9 Correct 57 ms 80380 KB Output is correct
10 Correct 55 ms 80504 KB Output is correct
11 Correct 56 ms 80632 KB Output is correct
12 Correct 55 ms 80632 KB Output is correct
13 Correct 63 ms 81400 KB Output is correct
14 Correct 63 ms 82552 KB Output is correct
15 Correct 67 ms 83704 KB Output is correct
16 Correct 66 ms 84600 KB Output is correct
17 Correct 64 ms 81400 KB Output is correct
18 Correct 64 ms 82424 KB Output is correct
19 Correct 66 ms 83576 KB Output is correct
20 Correct 67 ms 84472 KB Output is correct
21 Correct 63 ms 81528 KB Output is correct
22 Correct 64 ms 82424 KB Output is correct
23 Correct 66 ms 83576 KB Output is correct
24 Correct 66 ms 84472 KB Output is correct
25 Correct 1506 ms 181644 KB Output is correct
26 Correct 2187 ms 275160 KB Output is correct
27 Runtime error 2832 ms 524288 KB Execution killed with signal 11 (could be triggered by violating memory limits)
28 Halted 0 ms 0 KB -