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Submission #1110362

# Submission time Handle Problem Language Result Execution time Memory
1110362 2024-11-09T10:25:40 Z FucKanh Klasika (COCI20_klasika) C++14
33 / 110
 5000 ms 99036 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) {
//        cerr << "update: "<< pos << endl;
        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;
//        cerr<< pos << " " << t << endl;
        assert(p!=nullptr);
        push(p,pos);
        int bit = (val&(1<<pos-1))!=0;
//        cerr<< pos << " " << t << " " << bit << endl;
        if (p->p[bit]==nullptr || p->t[bit] > t){
//            cerr << "Ok" << endl;
            return get(p->p[!bit],pos-1,val,t) | (!bit << pos-1);
        }
        else {
//            cerr << "xam" << endl;
            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) {
//        cerr << "init: " << t << endl;
        update(root,31,0,t);
        sz = 0;
    }

    void print(nodetrie *p, int pos, int val, int t) {
//        if (pos <= 5) cerr << "> " << pos << " " << (p->la) << " | " << p->la << endl;
        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 << 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) {
    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];
        }
        else {
            a->t[i] = min(a->t[i], b->t[i]);
        }
        merged(a->p[i], b->p[i], pos - 1);
    }
}

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[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:119:31: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  119 |         int bit = (val&(1<<pos-1))!=0;
      |                            ~~~^~
klasika.cpp: In member function 'int trie::get(nodetrie*, int, int, int)':
klasika.cpp:135:31: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  135 |         int bit = (val&(1<<pos-1))!=0;
      |                            ~~~^~
klasika.cpp:139:62: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  139 |             return get(p->p[!bit],pos-1,val,t) | (!bit << pos-1);
      |                                                           ~~~^~
klasika.cpp:143:60: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  143 |             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:174:48: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  174 |             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:272:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  272 |         freopen((name + ".inp").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:273:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  273 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 26448 KB Output is correct
2 Correct 16 ms 26396 KB Output is correct
3 Correct 22 ms 26704 KB Output is correct
4 Correct 27 ms 26704 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 13 ms 26616 KB Output is correct
7 Correct 12 ms 26376 KB Output is correct
8 Correct 13 ms 26448 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 13 ms 26448 KB Output is correct
11 Correct 15 ms 26716 KB Output is correct
12 Correct 16 ms 26744 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 26448 KB Output is correct
2 Correct 16 ms 26396 KB Output is correct
3 Correct 22 ms 26704 KB Output is correct
4 Correct 27 ms 26704 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 13 ms 26616 KB Output is correct
7 Correct 12 ms 26376 KB Output is correct
8 Correct 13 ms 26448 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 13 ms 26448 KB Output is correct
11 Correct 15 ms 26716 KB Output is correct
12 Correct 16 ms 26744 KB Output is correct
13 Correct 139 ms 27216 KB Output is correct
14 Correct 496 ms 28160 KB Output is correct
15 Correct 1120 ms 29020 KB Output is correct
16 Correct 1948 ms 29768 KB Output is correct
17 Correct 19 ms 27216 KB Output is correct
18 Correct 28 ms 27728 KB Output is correct
19 Correct 25 ms 28240 KB Output is correct
20 Correct 30 ms 28028 KB Output is correct
21 Correct 36 ms 27208 KB Output is correct
22 Correct 89 ms 27972 KB Output is correct
23 Correct 195 ms 28680 KB Output is correct
24 Correct 349 ms 29464 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5062 ms 99036 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 26448 KB Output is correct
2 Correct 16 ms 26396 KB Output is correct
3 Correct 22 ms 26704 KB Output is correct
4 Correct 27 ms 26704 KB Output is correct
5 Correct 13 ms 26448 KB Output is correct
6 Correct 13 ms 26616 KB Output is correct
7 Correct 12 ms 26376 KB Output is correct
8 Correct 13 ms 26448 KB Output is correct
9 Correct 12 ms 26448 KB Output is correct
10 Correct 13 ms 26448 KB Output is correct
11 Correct 15 ms 26716 KB Output is correct
12 Correct 16 ms 26744 KB Output is correct
13 Correct 139 ms 27216 KB Output is correct
14 Correct 496 ms 28160 KB Output is correct
15 Correct 1120 ms 29020 KB Output is correct
16 Correct 1948 ms 29768 KB Output is correct
17 Correct 19 ms 27216 KB Output is correct
18 Correct 28 ms 27728 KB Output is correct
19 Correct 25 ms 28240 KB Output is correct
20 Correct 30 ms 28028 KB Output is correct
21 Correct 36 ms 27208 KB Output is correct
22 Correct 89 ms 27972 KB Output is correct
23 Correct 195 ms 28680 KB Output is correct
24 Correct 349 ms 29464 KB Output is correct
25 Execution timed out 5062 ms 99036 KB Time limit exceeded
26 Halted 0 ms 0 KB -