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Submission #308332

# Submission time Handle Problem Language Result Execution time Memory
308332 2020-09-30T23:41:21 Z ErdosSzekeres Klasika (COCI20_klasika) C++14
33 / 110
 418 ms 98840 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[MAXN], fd[MAXN], node_counter = 0;
set<int> aux[MAXN];//entry times
int create(){
    node_counter++;
    fe[node_counter] = -1;
    fd[node_counter] = -1;
    aux[node_counter].insert(1<<30);
    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, 29, 0, ent[1]);
    id = 1;
    for(int i=0; i<q; i++){
        if(tp[i] == 0){
            id++;
            inserir(1, 29, d[id], ent[id]);
        }else{
            cout << query(raiz, 29, 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 11 ms 14592 KB Output is correct
2 Correct 11 ms 14720 KB Output is correct
3 Correct 11 ms 14848 KB Output is correct
4 Correct 11 ms 14848 KB Output is correct
5 Correct 11 ms 14592 KB Output is correct
6 Correct 11 ms 14720 KB Output is correct
7 Correct 11 ms 14848 KB Output is correct
8 Correct 11 ms 14976 KB Output is correct
9 Correct 11 ms 14592 KB Output is correct
10 Correct 11 ms 14720 KB Output is correct
11 Correct 11 ms 14848 KB Output is correct
12 Correct 11 ms 14976 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14592 KB Output is correct
2 Correct 11 ms 14720 KB Output is correct
3 Correct 11 ms 14848 KB Output is correct
4 Correct 11 ms 14848 KB Output is correct
5 Correct 11 ms 14592 KB Output is correct
6 Correct 11 ms 14720 KB Output is correct
7 Correct 11 ms 14848 KB Output is correct
8 Correct 11 ms 14976 KB Output is correct
9 Correct 11 ms 14592 KB Output is correct
10 Correct 11 ms 14720 KB Output is correct
11 Correct 11 ms 14848 KB Output is correct
12 Correct 11 ms 14976 KB Output is correct
13 Correct 18 ms 15744 KB Output is correct
14 Correct 20 ms 16768 KB Output is correct
15 Correct 21 ms 17792 KB Output is correct
16 Correct 23 ms 18816 KB Output is correct
17 Correct 18 ms 15616 KB Output is correct
18 Correct 20 ms 16640 KB Output is correct
19 Correct 22 ms 17792 KB Output is correct
20 Correct 22 ms 18688 KB Output is correct
21 Correct 18 ms 15616 KB Output is correct
22 Correct 20 ms 16660 KB Output is correct
23 Correct 22 ms 17792 KB Output is correct
24 Correct 23 ms 18688 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 418 ms 98840 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14592 KB Output is correct
2 Correct 11 ms 14720 KB Output is correct
3 Correct 11 ms 14848 KB Output is correct
4 Correct 11 ms 14848 KB Output is correct
5 Correct 11 ms 14592 KB Output is correct
6 Correct 11 ms 14720 KB Output is correct
7 Correct 11 ms 14848 KB Output is correct
8 Correct 11 ms 14976 KB Output is correct
9 Correct 11 ms 14592 KB Output is correct
10 Correct 11 ms 14720 KB Output is correct
11 Correct 11 ms 14848 KB Output is correct
12 Correct 11 ms 14976 KB Output is correct
13 Correct 18 ms 15744 KB Output is correct
14 Correct 20 ms 16768 KB Output is correct
15 Correct 21 ms 17792 KB Output is correct
16 Correct 23 ms 18816 KB Output is correct
17 Correct 18 ms 15616 KB Output is correct
18 Correct 20 ms 16640 KB Output is correct
19 Correct 22 ms 17792 KB Output is correct
20 Correct 22 ms 18688 KB Output is correct
21 Correct 18 ms 15616 KB Output is correct
22 Correct 20 ms 16660 KB Output is correct
23 Correct 22 ms 17792 KB Output is correct
24 Correct 23 ms 18688 KB Output is correct
25 Runtime error 418 ms 98840 KB Execution killed with signal 11 (could be triggered by violating memory limits)
26 Halted 0 ms 0 KB -