oj.uz

Submission #589913

# Submission time Handle Problem Language Result Execution time Memory
589913 2022-07-05T11:48:32 Z nguyen31hoang08minh2003 Klasika (COCI20_klasika) C++14
33 / 110
 1081 ms 524288 KB 
/*
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|
|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|
|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|
|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|
|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|
|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|
|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|
|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|
|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
*/
#include <bits/stdc++.h>
#define fore(i, a, b) for (signed i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (signed i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (signed i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define subtree(x) num[x], num[x] + d[x] - 1
using namespace std;
using ll = long long;
using ld = long double;

template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};

typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

class BinaryTrie {
private:
    int length, depth;
    vector<array<int, 2> > trie;
public:
    BinaryTrie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
    void append(const int mask) {
        int x = 0, y;
        ford(i, depth, 0) {
            y = ((mask >> i) & 1);
            if (trie[x][y] < 0) {
                trie[x][y] = ++length;
                trie.push_back({-1, -1});
            }
            x = trie[x][y];
        }
    }
    int query(const int mask) const {
        int res = 0, x = 0, y;
        ford(i, depth, 0) {
            y = ((mask >> i) & 1) ^ 1;
            if (trie[x][y] < 0) {
                if (y ^ 1)
                    res |= 1 << i;
                x = trie[x][y ^ 1];
            } else {
                if (y)
                    res |= 1 << i;
                x = trie[x][y];
            }
        }
        return res;
    }
};

class Trie {
private:
    int length, depth;
    vector<array<int, 2> > trie;
public:
    Trie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
    void append(const int mask) {
        int x = 0, y;
        ford(i, depth, 0) {
            y = ((mask >> i) & 1);
            if (trie[x][y] < 0) {
                trie[x][y] = ++length;
                trie.push_back({-1, -1});
            }
            x = trie[x][y];
        }
    }
    int query(const int mask) const {
        int res = 0, x = 0, y;
        ford(i, depth, 0) {
            y = ((mask >> i) & 1) ^ 1;
            if (trie[x][y] < 0) {
                x = trie[x][y ^ 1];
                if (x < 0)
                    return 0;
            } else {
                res |= 1 << i;
                x = trie[x][y];
            }
        }
        return res;
    }
};

class SegmentTree {
private:
    int n;
    vector<Trie> it;

    void update(const int q, const int mask, const int i, const int l, const int r) {
        if (q < l || r < q)
            return;
        it[i].append(mask);
        if (l == r)
            return;
        const int m = l + r >> 1;
        update(q, mask, i << 1, l, m);
        update(q, mask, i << 1 | 1, m + 1, r);
    }

    int query(const int ql, const int qr, const int mask, const int i, const int l, const int r) const {
        if (qr < l || r < ql)
            return 0;
        if (ql <= l && r <= qr)
            return it[i].query(mask);
        const int m = l + r >> 1;
        return max(query(ql, qr, mask, i << 1, l, m), query(ql, qr, mask, i << 1 | 1, m + 1, r));
    };

public:
    SegmentTree(): n(0) {};
    SegmentTree(const int n): n(n), it(n + 5 << 2, Trie(30)) {};

    void update(const int q, const int mask) {
        update(q, mask, 1, 1, n);
    }

    void resize(int newSize) {
        n = newSize;
        newSize = n + 5 << 2;
        it.resize(newSize, Trie(30));
    }

    int query(const int ql, const int qr, const int mask) const {
        return query(ql, qr, mask, 1, 1, n);
    }
};

int q;

void subtask2() {
    vi h(2);
    vii p(2);
    string t;
    vvii adj(2);
    int x, y, a, b, n = 1, res, g;
    const function<int(int, int)> findDistance = [&](int x, int y) -> int {
        int res = 0;
        for (; h[x] > h[y]; x = p[x].se)
            res ^= p[x].fi;
        for (; h[y] > h[x]; y = p[y].se)
            res ^= p[y].fi;
        while (x != y) {
            res ^= p[x].fi ^ p[y].fi;
            x = p[x].se;
            y = p[y].se;
        }
        return res;
    };
    const function<void(int, int)> dfs = [&res, &adj, &g, &dfs](const int u, const int d) {
        maxi(res, g ^ d);
        for (const auto &[w, v] : adj[u])
            dfs(v, d ^ w);
    };
    fort(_, 1, q) {
        cin >> t;
        if (t == "Add") {
            cin >> x >> y;
            adj.pb(vii());
            adj[x].emplace_back(y, ++n);
            h.pb(h[x] + 1);
            p.emplace_back(y, x);
        } else {
            cin >> a >> b;
            res = g = findDistance(a, b);
            dfs(b, 0);
            cout << res << '\n';
        }
    }
}

void subtask3() {
    vi h(2);
    string t;
    int x, y, a, b;
    BinaryTrie trie(30);
    trie.append(0);
    fort(_, 1, q) {
        cin >> t;
        if (t == "Add") {
            cin >> x >> y;
            h.pb(h[x] ^ y);
            trie.append(h.back());
        } else {
            cin >> a >> b;
            cout << (h[a] ^ trie.query(h[a])) << '\n';
        }
    }
}

void subtask4() {
    vvii adj(2);
    SegmentTree it;
    vi h(2), num, d;
    int n = 1, t = 0;
    vector<tuple<string, int, int> > queries(q);
    const function<void(int)> dfs = [&adj, &t, &num, &d, &dfs](const int u) {
        num[u] = ++t;
        ++d[u];
        for (const auto &[w, v] : adj[u]) {
            dfs(v);
            d[u] += d[v];
        }
    };
//-----------------------------------Create graph------------------------------------------
    for (auto &[z, x, y] : queries) {
        cin >> z >> x >> y;
        if (z == "Add") {
            adj.pb(vii());
            adj[x].emplace_back(y, ++n);
            h.pb(h[x] ^ y);
        }
    }
//-----------------------------------Numbering----------------------------------------------
    num.resize(n + 1);
    d.resize(n + 1);
    it.resize(n);
    dfs(1);
    it.update(num[1], 0);
//-----------------------------------Calculate answers---------------------------------------
    t = 1;
    for (const auto &[z, x, y] : queries) {
        if (z == "Add") {
            ++t;
            it.update(num[t], h[t]);
            continue;
        }
        cout << it.query(subtree(y), h[x]) << '\n';
    }
}

int main() {
    #ifdef LOCAL
        freopen("input.INP", "r", stdin);
    #endif // LOCAL
    cin.tie(0) -> sync_with_stdio(0);
    cout.tie(0);
    cin >> q;
    subtask4();
    return 0;
}

Compilation message

klasika.cpp: In constructor 'BinaryTrie::BinaryTrie(int)':
klasika.cpp:48:28: warning: 'BinaryTrie::trie' will be initialized after [-Wreorder]
   48 |     vector<array<int, 2> > trie;
      |                            ^~~~
klasika.cpp:47:9: warning:   'int BinaryTrie::length' [-Wreorder]
   47 |     int length, depth;
      |         ^~~~~~
klasika.cpp:50:5: warning:   when initialized here [-Wreorder]
   50 |     BinaryTrie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
      |     ^~~~~~~~~~
klasika.cpp: In constructor 'Trie::Trie(int)':
klasika.cpp:83:28: warning: 'Trie::trie' will be initialized after [-Wreorder]
   83 |     vector<array<int, 2> > trie;
      |                            ^~~~
klasika.cpp:82:9: warning:   'int Trie::length' [-Wreorder]
   82 |     int length, depth;
      |         ^~~~~~
klasika.cpp:85:5: warning:   when initialized here [-Wreorder]
   85 |     Trie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
      |     ^~~~
klasika.cpp: In member function 'void SegmentTree::update(int, int, int, int, int)':
klasika.cpp:125:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  125 |         const int m = l + r >> 1;
      |                       ~~^~~
klasika.cpp: In member function 'int SegmentTree::query(int, int, int, int, int, int) const':
klasika.cpp:135:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  135 |         const int m = l + r >> 1;
      |                       ~~^~~
klasika.cpp: In constructor 'SegmentTree::SegmentTree(int)':
klasika.cpp:141:42: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
  141 |     SegmentTree(const int n): n(n), it(n + 5 << 2, Trie(30)) {};
      |                                        ~~^~~
klasika.cpp: In member function 'void SegmentTree::resize(int)':
klasika.cpp:149:21: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
  149 |         newSize = n + 5 << 2;
      |                   ~~^~~
klasika.cpp: In lambda function:
klasika.cpp:181:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  181 |         for (const auto &[w, v] : adj[u])
      |                          ^
klasika.cpp: In lambda function:
klasika.cpp:229:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  229 |         for (const auto &[w, v] : adj[u]) {
      |                          ^
klasika.cpp: In function 'void subtask4()':
klasika.cpp:235:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  235 |     for (auto &[z, x, y] : queries) {
      |                ^
klasika.cpp:251:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  251 |     for (const auto &[z, x, y] : queries) {
      |                      ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 5 ms 1620 KB Output is correct
14 Correct 6 ms 3152 KB Output is correct
15 Correct 7 ms 4424 KB Output is correct
16 Correct 12 ms 6348 KB Output is correct
17 Correct 4 ms 1648 KB Output is correct
18 Correct 6 ms 3176 KB Output is correct
19 Correct 10 ms 4176 KB Output is correct
20 Correct 12 ms 5968 KB Output is correct
21 Correct 4 ms 1620 KB Output is correct
22 Correct 6 ms 3028 KB Output is correct
23 Correct 9 ms 4256 KB Output is correct
24 Correct 9 ms 5840 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 391 ms 169692 KB Output is correct
2 Correct 665 ms 342372 KB Output is correct
3 Correct 1078 ms 512124 KB Output is correct
4 Runtime error 1081 ms 524288 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 444 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 5 ms 1620 KB Output is correct
14 Correct 6 ms 3152 KB Output is correct
15 Correct 7 ms 4424 KB Output is correct
16 Correct 12 ms 6348 KB Output is correct
17 Correct 4 ms 1648 KB Output is correct
18 Correct 6 ms 3176 KB Output is correct
19 Correct 10 ms 4176 KB Output is correct
20 Correct 12 ms 5968 KB Output is correct
21 Correct 4 ms 1620 KB Output is correct
22 Correct 6 ms 3028 KB Output is correct
23 Correct 9 ms 4256 KB Output is correct
24 Correct 9 ms 5840 KB Output is correct
25 Correct 391 ms 169692 KB Output is correct
26 Correct 665 ms 342372 KB Output is correct
27 Correct 1078 ms 512124 KB Output is correct
28 Runtime error 1081 ms 524288 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -