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Submission #1010669

# Submission time Handle Problem Language Result Execution time Memory
1010669 2024-06-29T09:26:40 Z KawakiMeido Klasika (COCI20_klasika) C++17
110 / 110
 1319 ms 177156 KB 
/*Author: KawakiMeido*/
#include <bits/stdc++.h>
#define pb push_back
#define endl "\n"
#define ll long long
#define pii pair<int,int>
#define piii pair<pii,int>
#define fi first
#define se second

using namespace std;

/*Constants*/
const int N = 2e5+10;
const int LG = 30;
const int LGLCA = 20;
const int INF = 1e9+7;
const long long LLINF = 1e18+3;

/*TestCases*/
int test=1;
void solve();
void TestCases(bool v){
    if (v) cin >> test;
    while(test--) solve();
}

/*Global Variables*/
int n,q;
int tme[N];
int ans[N];
vector<pii> adj[N];
priority_queue<piii,vector<piii>,greater<piii>> query;

//Trie

struct Trie{
    struct Node{
        Node* child[2];
        int min_time;
        int sz;
        Node(){
            child[0] = child[1] = NULL;
            min_time = INF;
        }
    };

    Node* Root;
    int sz;
    int xr;
    Trie(){
        Root = new Node();
//        Root->min_time = 0;
        sz = xr = 0;
    }

    void Add(int x, int t){
        Node* cur = Root;
        for (int i=30; i>=0; i--){
            int idx = ((x>>i)&1);
            if (cur->child[idx] == NULL) cur->child[idx] = new Node();
            cur = cur->child[idx];
            cur->min_time = min(t,cur->min_time);
        }
        ++sz;
    }
    void Merge(Trie* tr, Node* cur, int lg, int x){
        if (lg<0){
            tr->Add(x^xr^(tr->xr),cur->min_time);
            return;
        }
        if (cur->child[0]!=NULL){
            Merge(tr,cur->child[0],lg-1,x);
            delete cur->child[0];
        }
        if (cur->child[1]!=NULL){
            Merge(tr,cur->child[1],lg-1,x+(1<<lg));
            delete cur->child[1];
        }
    }

    int Get(int x, int t){
        Node* cur = Root;
        int res = 0;
        for (int i=30; i>=0; i--){
            int idx = ((x>>i)&1);
            idx = (idx+1)%2;
            if (cur->child[idx] == NULL || cur->child[idx]->min_time>t){
                res += (((idx+1)%2)<<i);
                cur = cur->child[(idx+1)%2];
            }
            else{
                res += (idx<<i);
                cur = cur->child[idx];
            }
        }
        return res;
    }
};

Trie* tr[N];

//LCA

int h[N];
int up[N][LGLCA], dist[N][LGLCA];

void dfs(int u, int p, int w){
    h[u] = h[p]+1;
    up[u][0] = p;
    dist[u][0] = w;
    for (int lg = 1; lg<LGLCA; lg++){
        int v = up[u][lg-1];
        up[u][lg] = up[v][lg-1];
        dist[u][lg] = (dist[u][lg-1]^dist[v][lg-1]);
    }

    for (auto in:adj[u]){
        int v = in.fi;
        int x = in.se;

        dfs(v,u,x);
    }
}

int GetDist(int u, int v){
    int res = 0;
    if (h[u] > h[v]) swap(u,v);
    int delta = h[v]-h[u];
    for (int lg = 0; lg<LGLCA; lg++){
        if ((delta>>lg)&1){
            res = (res^dist[v][lg]);
            v = up[v][lg];
        }
    }
    if (u==v) return res;
    for (int lg=LGLCA-1; lg>=0; lg--){
        if (up[u][lg]!=up[v][lg]){
            res = (res^dist[u][lg]^dist[v][lg]);
            u = up[u][lg];
            v = up[v][lg];
        }
    }
    return (res^dist[u][0]^dist[v][0]);
}

/*Solution*/
void solve(){
    cin >> q;
    string s;
    int n=1;
    int x,y;
    for (int tmp = 1; tmp<=q; tmp++){
        ans[tmp] = -1;
        cin >> s >> x >> y;
        if (s == "Add"){
            ++n;
            tme[n] = tmp;
            adj[x].push_back({n,y});
        }
        else{
            query.push({{-y,tmp},x});
        }
    }
    query.push({{0,0},0});
    dfs(1,0,0);
    for (int u=n; u>0; u--){
        if (adj[u].size() == 0){
            tr[u] = new Trie();
            tr[u]->Add(0,tme[u]);
        }
        else{
            tr[u] = new Trie();
            tr[u]->Add(0,tme[u]);
            Trie* lgst = tr[u];
            for (auto in:adj[u]){
                int v = in.fi;
                int w = in.se;
                tr[v]->xr = (tr[v]->xr^w);

                if (lgst->sz < tr[v]->sz) lgst = tr[v];
            }

            if (lgst!=tr[u]){
                tr[u]->Merge(lgst,tr[u]->Root,30,0);
                delete tr[u];
                tr[u] = lgst;
            }
            for (auto in:adj[u]){
                int v = in.fi;
//                int w = in.se;
                if (tr[u]!=tr[v]){
                    tr[v]->Merge(tr[u],tr[v]->Root,30,0);
                    delete tr[v];
                    tr[v] = NULL;
                }
            }
        }
        while (-query.top().fi.fi==u){
            int v = query.top().se;
            int t = query.top().fi.se;
            query.pop();
            int rawr = GetDist(u,v);
            rawr = (rawr^(tr[u]->xr));

            int mn = tr[u]->Get(rawr,t);
            ans[t] = (rawr^mn);
        }
    }
    for (int i=1; i<=q; i++){
        if (ans[i]!=-1){
            cout << ans[i] << endl;
        }
    }
}

/*Driver Code*/
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    TestCases(0);

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5208 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 5172 KB Output is correct
4 Correct 2 ms 5212 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 2 ms 5280 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 3 ms 5136 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5208 KB Output is correct
11 Correct 3 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5208 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 5172 KB Output is correct
4 Correct 2 ms 5212 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 2 ms 5280 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 3 ms 5136 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5208 KB Output is correct
11 Correct 3 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 4 ms 5464 KB Output is correct
14 Correct 4 ms 5976 KB Output is correct
15 Correct 4 ms 6236 KB Output is correct
16 Correct 5 ms 6636 KB Output is correct
17 Correct 4 ms 5464 KB Output is correct
18 Correct 6 ms 5976 KB Output is correct
19 Correct 6 ms 6492 KB Output is correct
20 Correct 7 ms 6748 KB Output is correct
21 Correct 4 ms 5464 KB Output is correct
22 Correct 4 ms 5968 KB Output is correct
23 Correct 5 ms 6236 KB Output is correct
24 Correct 8 ms 6492 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 42752 KB Output is correct
2 Correct 215 ms 70148 KB Output is correct
3 Correct 239 ms 96264 KB Output is correct
4 Correct 261 ms 122116 KB Output is correct
5 Correct 349 ms 53992 KB Output is correct
6 Correct 723 ms 95608 KB Output is correct
7 Correct 1002 ms 136040 KB Output is correct
8 Correct 1319 ms 177068 KB Output is correct
9 Correct 233 ms 41132 KB Output is correct
10 Correct 314 ms 67328 KB Output is correct
11 Correct 399 ms 92456 KB Output is correct
12 Correct 463 ms 116700 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5208 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 2 ms 5172 KB Output is correct
4 Correct 2 ms 5212 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 2 ms 5280 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 3 ms 5136 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5208 KB Output is correct
11 Correct 3 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 4 ms 5464 KB Output is correct
14 Correct 4 ms 5976 KB Output is correct
15 Correct 4 ms 6236 KB Output is correct
16 Correct 5 ms 6636 KB Output is correct
17 Correct 4 ms 5464 KB Output is correct
18 Correct 6 ms 5976 KB Output is correct
19 Correct 6 ms 6492 KB Output is correct
20 Correct 7 ms 6748 KB Output is correct
21 Correct 4 ms 5464 KB Output is correct
22 Correct 4 ms 5968 KB Output is correct
23 Correct 5 ms 6236 KB Output is correct
24 Correct 8 ms 6492 KB Output is correct
25 Correct 153 ms 42752 KB Output is correct
26 Correct 215 ms 70148 KB Output is correct
27 Correct 239 ms 96264 KB Output is correct
28 Correct 261 ms 122116 KB Output is correct
29 Correct 349 ms 53992 KB Output is correct
30 Correct 723 ms 95608 KB Output is correct
31 Correct 1002 ms 136040 KB Output is correct
32 Correct 1319 ms 177068 KB Output is correct
33 Correct 233 ms 41132 KB Output is correct
34 Correct 314 ms 67328 KB Output is correct
35 Correct 399 ms 92456 KB Output is correct
36 Correct 463 ms 116700 KB Output is correct
37 Correct 215 ms 43192 KB Output is correct
38 Correct 239 ms 70456 KB Output is correct
39 Correct 306 ms 97032 KB Output is correct
40 Correct 329 ms 122292 KB Output is correct
41 Correct 419 ms 54312 KB Output is correct
42 Correct 739 ms 95400 KB Output is correct
43 Correct 935 ms 136244 KB Output is correct
44 Correct 1284 ms 177156 KB Output is correct
45 Correct 201 ms 41600 KB Output is correct
46 Correct 258 ms 67588 KB Output is correct
47 Correct 337 ms 92364 KB Output is correct
48 Correct 382 ms 116744 KB Output is correct