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Submission #1110368

# Submission time Handle Problem Language Result Execution time Memory
1110368 2024-11-09T10:32:13 Z FucKanh Klasika (COCI20_klasika) C++14
110 / 110
 1779 ms 293960 KB 
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define p3i pair<int,pii>
#define p4i pair<pii,pii>
#define fi first
#define se second

using namespace std;

const int maxn = 2e5 + 2;

int h[maxn],ans[maxn];
vector<p3i> a[maxn];
vector<p4i> qr[maxn];

struct node {
    int u,pa,jump,len,vpa,vjump;
    node() {};
    node(int u) : u(u) {}
    node(int u, int pa, int jump, int len, int vpa,int vjump) : u(u), pa(pa), jump(jump), len(len), vpa(vpa), vjump(vjump) {}
};

node info[maxn];

void add(int u,int pa,int w) {
    h[u] = h[pa] + 1;
    int len,jump,vpa = w,vjump;
    if (info[pa].len == info[info[pa].jump].len) {
        len = info[pa].len * 2 + 1;
        jump = info[info[pa].jump].jump;
        vjump = w ^ info[pa].vjump ^ info[info[pa].jump].vjump;
    }
    else {
        len = 1;
        jump = pa;
        vjump = w;
    }
    info[u] = node(u,pa,jump,len,vpa,vjump);
}

pii binlift(int u, int k) {
    int des = h[u] - k;
    int value = 0;
    while (h[u] != des) {
//        cerr << u << " " << h[u] << " " << des << endl;
//        system("pause");
        if (h[info[u].jump] < des) {
            value ^= info[u].vpa;
            u = info[u].pa;
        }
        else {
            value ^= info[u].vjump;
            u = info[u].jump;
        }
    }
    return {u,value};
}

int LCA(int u, int v) {
    if (h[u] > h[v]) swap(u,v);
    pii tmp = binlift(v,h[v]-h[u]);
    int val = 0;
    v = tmp.first;
//    cerr << u << " " << v << endl;
    while (u != v) {
        if (info[u].jump != info[v].jump) {
            val ^= info[u].vjump ^ info[v].vjump;
            u = info[u].jump;
            v = info[v].jump;
        }
        else {
            val ^= info[u].vpa ^ info[v].vpa;
            u = info[u].pa;
            v = info[v].pa;
        }
    }
//    cerr << val << " " << tmp.second << endl;
    return val ^ tmp.second;
}

struct nodetrie {
    int la, t[2];
    nodetrie *p[2];
    nodetrie() {
        t[0] = t[1] = 0;
        p[0] = p[1] = nullptr;
        la = 0;
    }
    nodetrie(nodetrie *l, nodetrie *r, int tl, int tr) {
        t[0] = (tl);
        t[1] = (tr);
        p[0] = (l);
        p[1] = (r);
        la = 0;
    }
};

void push(nodetrie *p,int pos) {
    if (p->la) {
        for (int i = 0; i < 2; i++) {
            if (p->p[i]!=nullptr) p->p[i]->la ^= p->la;
        }
        if (p->la & (1<<pos-1)) {
            swap(p->p[0],p->p[1]), swap(p->t[0],p->t[1]);
        }
        p->la=0;
    }
}

class trie {
public:
    int sz;
    nodetrie *root = new nodetrie();
    void update(nodetrie *p, int pos, int val, int t) {
        if (pos==0) return;
        push(p,pos);
        int bit = (val&(1<<pos-1))!=0;
        if (p->p[bit]==nullptr){
            p->t[bit] = t;
            p->p[bit] = new nodetrie();
        }
        else {
            p->t[bit] = min(t,p->t[bit]);
        }
        update( p->p[bit], pos - 1, val, t);
    }

    int get(nodetrie *p, int pos, int val, int t) {
        if (pos==0) return 0;
        assert(p!=nullptr);
        push(p,pos);
        int bit = (val&(1<<pos-1))!=0;
        if (p->p[bit]==nullptr || p->t[bit] > t){
            return get(p->p[!bit],pos-1,val,t) | (!bit << pos-1);
        }
        else {
            return get(p->p[bit],pos-1,val,t) | (bit << pos-1);
        }
    }

    int get(int val, int t) {
        return get(root,31,val,t);
    }

    void update(int val, int t) {
        update(root,31,val,t);
        sz++;
    }

    void addlazy(int val) {
        root->la ^= val;
    }

    void init(int t) {
        update(root,31,0,t);
        sz = 1;
    }

    void print(nodetrie *p, int pos, int val, int t) {
        push(p,pos);
        if (pos==0) {
            cerr << ">> " << val << " "<< t<< endl; return;
        }
        for (int i = 0; i < 2; i++) {
            if (p->p[i] == nullptr) continue;
            print(p->p[i], pos-1, val | (i<<pos-1), max(t,p->t[i]));
        }
    }
    void print(int u) {
        cerr << "tree print: " << u << " sz: " << sz << endl;
        print(root,31,0,0);
    }

    void del(nodetrie *p, int pos) {
        if (pos==0) {
            delete p;
            return;
        }
        for (int i = 0; i < 2; i++) {
            if (p->p[i]!=nullptr) del(p->p[i],pos-1);
        }
        delete p;
    }

};

void merged(nodetrie *a, nodetrie *b, int pos, int &sz) {
    if (pos==0) return;
    push(a,pos);
    push(b,pos);
    for (int i = 0; i < 2; i++) {
        if (b->p[i] == nullptr) continue;
        if (a->p[i] == nullptr) {
            a->p[i] = new nodetrie();
            a->t[i] = b->t[i];
            if (pos-1==0) sz++;
        }
        else {
            a->t[i] = min(a->t[i], b->t[i]);
        }
        merged(a->p[i], b->p[i], pos - 1,sz);
    }
}

trie tree[maxn];

void dfs(int u) {
//    cerr <<"vst u:" << u << endl;
    if (a[u].empty()) {
//        tree[u].print(u);
        for (p4i val : qr[u]) {
            int x,y,idx,t; tie(x,y) = val.fi; tie(idx,t) = val.se;
            int ori = LCA(x,y);
//            cerr << "ori: " << ori << endl;
            ans[idx] = ori ^ tree[u].get(~ori,t);
        }
        return;
    }
    for (p3i tmp : a[u]) {
        int w,v;
        w = tmp.se.fi;
        v = tmp.fi;
        tree[v].init(tmp.se.se);
        dfs(v);
        tree[v].addlazy(w);
        if (tree[u].sz < tree[v].sz) swap(tree[u], tree[v]);
        merged(tree[u].root, tree[v].root, 31,tree[u].sz);

        tree[v].del(tree[v].root,31);
    }
//    tree[u].print(u);
    for (p4i val : qr[u]) {
        int x,y,idx,t; tie(x,y) = val.fi; tie(idx,t) = val.se;
        int ori = LCA(x,y);
//        cerr << ori << " : " << t << endl;
        ans[idx] = ori ^ tree[u].get(~ori,t);
    }
}

void solve() {
    int q; cin >> q;
    int cnt = 1, cntqr=0, t = 0;
    info[1] = node(1,0,0,-1,0,0);
    for (int i = 1; i <= q; i++) {
        string s;cin >> s;
        t++;
        if (s=="Add") {
            int x,w; cin >> x >> w;
            add(++cnt,x,w);
            a[x].push_back({cnt,{w,t}});
        }
        else {
            int x,y; cin >> x >> y;
            qr[y].push_back({{x,y},{++cntqr,t}});
        }
    }
    tree[1].init(0);
    dfs(1);
    for (int i = 1; i <= cntqr; i++) {
        cout << ans[i] << '\n';
    }
}
void file(string name) {
    if (fopen((name + ".inp").c_str(), "r")) {
        freopen((name + ".inp").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
signed main() {
    file("TaskKlasika");
    cin.tie(0) -> sync_with_stdio(0);
    solve();
    return 0;
}

Compilation message

klasika.cpp: In function 'void push(nodetrie*, int)':
klasika.cpp:104:28: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  104 |         if (p->la & (1<<pos-1)) {
      |                         ~~~^~
klasika.cpp: In member function 'void trie::update(nodetrie*, int, int, int)':
klasika.cpp:118:31: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  118 |         int bit = (val&(1<<pos-1))!=0;
      |                            ~~~^~
klasika.cpp: In member function 'int trie::get(nodetrie*, int, int, int)':
klasika.cpp:133:31: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  133 |         int bit = (val&(1<<pos-1))!=0;
      |                            ~~~^~
klasika.cpp:135:62: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  135 |             return get(p->p[!bit],pos-1,val,t) | (!bit << pos-1);
      |                                                           ~~~^~
klasika.cpp:138:60: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  138 |             return get(p->p[bit],pos-1,val,t) | (bit << pos-1);
      |                                                         ~~~^~
klasika.cpp: In member function 'void trie::print(nodetrie*, int, int, int)':
klasika.cpp:167:48: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  167 |             print(p->p[i], pos-1, val | (i<<pos-1), max(t,p->t[i]));
      |                                             ~~~^~
klasika.cpp: In function 'void file(std::string)':
klasika.cpp:266:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  266 |         freopen((name + ".inp").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:267:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  267 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 26448 KB Output is correct
2 Correct 12 ms 26620 KB Output is correct
3 Correct 14 ms 26448 KB Output is correct
4 Correct 13 ms 26648 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 12 ms 26704 KB Output is correct
7 Correct 14 ms 26448 KB Output is correct
8 Correct 14 ms 26592 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 12 ms 26448 KB Output is correct
11 Correct 13 ms 26448 KB Output is correct
12 Correct 13 ms 26428 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 26448 KB Output is correct
2 Correct 12 ms 26620 KB Output is correct
3 Correct 14 ms 26448 KB Output is correct
4 Correct 13 ms 26648 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 12 ms 26704 KB Output is correct
7 Correct 14 ms 26448 KB Output is correct
8 Correct 14 ms 26592 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 12 ms 26448 KB Output is correct
11 Correct 13 ms 26448 KB Output is correct
12 Correct 13 ms 26428 KB Output is correct
13 Correct 15 ms 27164 KB Output is correct
14 Correct 16 ms 27600 KB Output is correct
15 Correct 16 ms 28240 KB Output is correct
16 Correct 18 ms 29008 KB Output is correct
17 Correct 16 ms 26960 KB Output is correct
18 Correct 19 ms 27216 KB Output is correct
19 Correct 20 ms 27984 KB Output is correct
20 Correct 23 ms 27984 KB Output is correct
21 Correct 16 ms 26704 KB Output is correct
22 Correct 18 ms 27228 KB Output is correct
23 Correct 19 ms 27728 KB Output is correct
24 Correct 20 ms 27984 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 318 ms 97012 KB Output is correct
2 Correct 421 ms 165304 KB Output is correct
3 Correct 517 ms 229268 KB Output is correct
4 Correct 609 ms 293308 KB Output is correct
5 Correct 548 ms 68848 KB Output is correct
6 Correct 838 ms 101940 KB Output is correct
7 Correct 1295 ms 129820 KB Output is correct
8 Correct 1779 ms 140516 KB Output is correct
9 Correct 335 ms 67812 KB Output is correct
10 Correct 551 ms 101180 KB Output is correct
11 Correct 666 ms 135500 KB Output is correct
12 Correct 816 ms 166076 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 26448 KB Output is correct
2 Correct 12 ms 26620 KB Output is correct
3 Correct 14 ms 26448 KB Output is correct
4 Correct 13 ms 26648 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 12 ms 26704 KB Output is correct
7 Correct 14 ms 26448 KB Output is correct
8 Correct 14 ms 26592 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 12 ms 26448 KB Output is correct
11 Correct 13 ms 26448 KB Output is correct
12 Correct 13 ms 26428 KB Output is correct
13 Correct 15 ms 27164 KB Output is correct
14 Correct 16 ms 27600 KB Output is correct
15 Correct 16 ms 28240 KB Output is correct
16 Correct 18 ms 29008 KB Output is correct
17 Correct 16 ms 26960 KB Output is correct
18 Correct 19 ms 27216 KB Output is correct
19 Correct 20 ms 27984 KB Output is correct
20 Correct 23 ms 27984 KB Output is correct
21 Correct 16 ms 26704 KB Output is correct
22 Correct 18 ms 27228 KB Output is correct
23 Correct 19 ms 27728 KB Output is correct
24 Correct 20 ms 27984 KB Output is correct
25 Correct 318 ms 97012 KB Output is correct
26 Correct 421 ms 165304 KB Output is correct
27 Correct 517 ms 229268 KB Output is correct
28 Correct 609 ms 293308 KB Output is correct
29 Correct 548 ms 68848 KB Output is correct
30 Correct 838 ms 101940 KB Output is correct
31 Correct 1295 ms 129820 KB Output is correct
32 Correct 1779 ms 140516 KB Output is correct
33 Correct 335 ms 67812 KB Output is correct
34 Correct 551 ms 101180 KB Output is correct
35 Correct 666 ms 135500 KB Output is correct
36 Correct 816 ms 166076 KB Output is correct
37 Correct 368 ms 100424 KB Output is correct
38 Correct 449 ms 166216 KB Output is correct
39 Correct 535 ms 230984 KB Output is correct
40 Correct 578 ms 293960 KB Output is correct
41 Correct 477 ms 72008 KB Output is correct
42 Correct 923 ms 101164 KB Output is correct
43 Correct 1272 ms 116776 KB Output is correct
44 Correct 1558 ms 136316 KB Output is correct
45 Correct 280 ms 67920 KB Output is correct
46 Correct 442 ms 102576 KB Output is correct
47 Correct 585 ms 134992 KB Output is correct
48 Correct 748 ms 166472 KB Output is correct