#866458 (C++23) No.2294 Union Path Query (Easy)

提出ソース

結果

問題	No.2294 Union Path Query (Easy)
ユーザー	hitonanode
提出日時	2023-05-05 22:15:17
言語	C++23 (gcc 12.3.0 + boost 1.83.0)
結果	WA
実行時間	-
コード長	13,971 bytes
コンパイル時間	3,117 ms
コンパイル使用メモリ	203,232 KB
実行使用メモリ	39,552 KB
最終ジャッジ日時	2024-05-02 16:46:51
合計ジャッジ時間	18,020 ms
ジャッジサーバーID （参考情報）	judge2 / judge5

このコードへのチャレンジ
（要ログイン）

テストケース

テストケース表示

入力	結果	実行時間実行使用メモリ
testcase_00	AC	28 ms 5,248 KB
testcase_01	AC	29 ms 5,376 KB
testcase_02	AC	28 ms 5,376 KB
testcase_03	AC	285 ms 39,552 KB
testcase_04	AC	210 ms 24,192 KB
testcase_05	AC	183 ms 21,632 KB
testcase_06	AC	283 ms 39,552 KB
testcase_07	AC	285 ms 39,552 KB
testcase_08	AC	268 ms 39,424 KB
testcase_09	AC	264 ms 39,552 KB
testcase_10	AC	294 ms 39,552 KB
testcase_11	AC	280 ms 39,552 KB
testcase_12	AC	277 ms 39,552 KB
testcase_13	AC	253 ms 39,424 KB
testcase_14	AC	173 ms 39,424 KB
testcase_15	AC	202 ms 39,424 KB
testcase_16	AC	161 ms 39,552 KB
testcase_17	AC	240 ms 39,552 KB
testcase_18	AC	238 ms 39,424 KB
testcase_19	AC	219 ms 39,552 KB
testcase_20	AC	199 ms 39,552 KB
testcase_21	AC	198 ms 39,552 KB
testcase_22	AC	209 ms 39,552 KB
testcase_23	AC	210 ms 39,552 KB
testcase_24	AC	220 ms 39,424 KB
testcase_25	AC	30 ms 5,376 KB
testcase_26	AC	29 ms 5,376 KB
testcase_27	AC	31 ms 5,376 KB
testcase_28	AC	111 ms 5,376 KB
testcase_29	AC	128 ms 7,040 KB
testcase_30	AC	136 ms 8,832 KB
testcase_31	AC	139 ms 10,752 KB
testcase_32	AC	144 ms 12,544 KB
testcase_33	AC	147 ms 14,464 KB
testcase_34	AC	161 ms 16,256 KB
testcase_35	AC	165 ms 18,048 KB
testcase_36	AC	175 ms 19,840 KB
testcase_37	AC	178 ms 21,632 KB
testcase_38	AC	194 ms 23,424 KB
testcase_39	AC	204 ms 25,088 KB
testcase_40	AC	207 ms 26,880 KB
testcase_41	AC	211 ms 28,800 KB
testcase_42	AC	225 ms 30,592 KB
testcase_43	AC	230 ms 32,256 KB
testcase_44	AC	238 ms 34,048 KB
testcase_45	AC	249 ms 35,968 KB
testcase_46	AC	265 ms 37,632 KB
testcase_47	AC	260 ms 39,424 KB
testcase_48	WA	-

権限があれば一括ダウンロードができます

ソースコード

raw source code

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <complex>
#include <deque>
#include <forward_list>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iostream>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using lint = long long;
using pint = pair<int, int>;
using plint = pair<lint, lint>;
struct fast_ios { fast_ios(){ cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_;
#define ALL(x) (x).begin(), (x).end()
#define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++)
#define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
template <typename T, typename V>
void ndarray(vector<T>& vec, const V& val, int len) { vec.assign(len, val); }
template <typename T, typename V, typename... Args> void ndarray(vector<T>& vec, const V& val, int len, Args... args) { vec.resize(len), for_each(begin(vec), end(vec), [&](T& v) { ndarray(v, val, args...); }); }
template <typename T> bool chmax(T &m, const T q) { return m < q ? (m = q, true) : false; }
template <typename T> bool chmin(T &m, const T q) { return m > q ? (m = q, true) : false; }
const std::vector<std::pair<int, int>> grid_dxs{{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
int floor_lg(long long x) { return x <= 0 ? -1 : 63 - __builtin_clzll(x); }
template <class T1, class T2> T1 floor_div(T1 num, T2 den) { return (num > 0 ? num / den : -((-num + den - 1) / den)); }
template <class T1, class T2> std::pair<T1, T2> operator+(const std::pair<T1, T2> &l, const std::pair<T1, T2> &r) { return std::make_pair(l.first + r.first, l.second + r.second); }
template <class T1, class T2> std::pair<T1, T2> operator-(const std::pair<T1, T2> &l, const std::pair<T1, T2> &r) { return std::make_pair(l.first - r.first, l.second - r.second); }
template <class T> std::vector<T> sort_unique(std::vector<T> vec) { sort(vec.begin(), vec.end()), vec.erase(unique(vec.begin(), vec.end()), vec.end()); return vec; }
template <class T> int arglb(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::lower_bound(v.begin(), v.end(), x)); }
template <class T> int argub(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::upper_bound(v.begin(), v.end(), x)); }
template <class IStream, class T> IStream &operator>>(IStream &is, std::vector<T> &vec) { for (auto &v : vec) is >> v; return is; }

template <class OStream, class T> OStream &operator<<(OStream &os, const std::vector<T> &vec);
template <class OStream, class T, size_t sz> OStream &operator<<(OStream &os, const std::array<T, sz> &arr);
template <class OStream, class T, class TH> OStream &operator<<(OStream &os, const std::unordered_set<T, TH> &vec);
template <class OStream, class T, class U> OStream &operator<<(OStream &os, const pair<T, U> &pa);
template <class OStream, class T> OStream &operator<<(OStream &os, const std::deque<T> &vec);
template <class OStream, class T> OStream &operator<<(OStream &os, const std::set<T> &vec);
template <class OStream, class T> OStream &operator<<(OStream &os, const std::multiset<T> &vec);
template <class OStream, class T> OStream &operator<<(OStream &os, const std::unordered_multiset<T> &vec);
template <class OStream, class T, class U> OStream &operator<<(OStream &os, const std::pair<T, U> &pa);
template <class OStream, class TK, class TV> OStream &operator<<(OStream &os, const std::map<TK, TV> &mp);
template <class OStream, class TK, class TV, class TH> OStream &operator<<(OStream &os, const std::unordered_map<TK, TV, TH> &mp);
template <class OStream, class... T> OStream &operator<<(OStream &os, const std::tuple<T...> &tpl);

template <class OStream, class T> OStream &operator<<(OStream &os, const std::vector<T> &vec) { os << '['; for (auto v : vec) os << v << ','; os << ']'; return os; }
template <class OStream, class T, size_t sz> OStream &operator<<(OStream &os, const std::array<T, sz> &arr) { os << '['; for (auto v : arr) os << v << ','; os << ']'; return os; }
template <class... T> std::istream &operator>>(std::istream &is, std::tuple<T...> &tpl) { std::apply([&is](auto &&... args) { ((is >> args), ...);}, tpl); return is; }
template <class OStream, class... T> OStream &operator<<(OStream &os, const std::tuple<T...> &tpl) { os << '('; std::apply([&os](auto &&... args) { ((os << args << ','), ...);}, tpl); return os << ')'; }
template <class OStream, class T, class TH> OStream &operator<<(OStream &os, const std::unordered_set<T, TH> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <class OStream, class T> OStream &operator<<(OStream &os, const std::deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; }
template <class OStream, class T> OStream &operator<<(OStream &os, const std::set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <class OStream, class T> OStream &operator<<(OStream &os, const std::multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <class OStream, class T> OStream &operator<<(OStream &os, const std::unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <class OStream, class T, class U> OStream &operator<<(OStream &os, const std::pair<T, U> &pa) { return os << '(' << pa.first << ',' << pa.second << ')'; }
template <class OStream, class TK, class TV> OStream &operator<<(OStream &os, const std::map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
template <class OStream, class TK, class TV, class TH> OStream &operator<<(OStream &os, const std::unordered_map<TK, TV, TH> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
#ifdef HITONANODE_LOCAL
const string COLOR_RESET = "\033[0m", BRIGHT_GREEN = "\033[1;32m", BRIGHT_RED = "\033[1;31m", BRIGHT_CYAN = "\033[1;36m", NORMAL_CROSSED = "\033[0;9;37m", RED_BACKGROUND = "\033[1;41m", NORMAL_FAINT = "\033[0;2m";
#define dbg(x) std::cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET << std::endl
#define dbgif(cond, x) ((cond) ? std::cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET << std::endl : std::cerr)
#else
#define dbg(x) ((void)0)
#define dbgif(cond, x) ((void)0)
#endif

#include <array>

// Nimber (64 bit)
// Reference:
// - https://judge.yosupo.jp/submission/4542 (Original implementation idea)
// - https://en.wikipedia.org/wiki/Nimber
// - https://kyopro-friends.hatenablog.com/entry/2020/04/07/195850
struct Nimber {
    using ull = unsigned long long;
    ull v;
    const static std::array<std::array<unsigned, 256>, 256> small_table;
    const static std::array<std::array<std::array<ull, 256>, 8>, 8> precalc;

    explicit operator bool() const { return v != 0; }
    Nimber(ull val = 0) : v(val) {}
    Nimber operator+(const Nimber &x) const { return Nimber(v ^ x.v); }
    Nimber operator-(const Nimber &x) const { return Nimber(v ^ x.v); }
    Nimber operator-() const { return *this; }
    Nimber &operator+=(const Nimber &x) { return *this = *this + x; }
    Nimber &operator-=(const Nimber &x) { return *this = *this + x; }
    template <class IStream> friend IStream &operator>>(IStream &is, Nimber &x) {
        ull v;
        return is >> v, x = Nimber(v), is;
    }
    template <class OStream> friend OStream &operator<<(OStream &os, const Nimber &x) {
        return os << x.v;
    }
    bool operator==(const Nimber &x) const { return v == x.v; }
    bool operator!=(const Nimber &x) const { return v != x.v; }
    bool operator<(const Nimber &x) const { return v < x.v; }

    static ull _rec(ull x, ull y) {
        if (x == 0 or y == 0) return 0;
        if (x < y) x ^= y, y ^= x, x ^= y; // Make x >= y
        if (y == 1) return x;
        for (int shift = 64 / 2;; shift >>= 1) {
            ull mask = (1ULL << shift) - 1;
            if (y >> shift) {
                ull v00 = _rec(x & mask, y & mask);
                ull v01 = _rec(x & mask, y >> shift);
                ull v10 = _rec(x >> shift, y & mask);
                ull v11 = _rec(x >> shift, y >> shift);
                return v00 ^ ((v01 ^ v10 ^ v11) << shift) ^ _rec(v11, 1ULL << (shift - 1));
            } else if (x >> shift) {
                return (_rec(x >> shift, y) << shift) ^ _rec(x & mask, y);
            }
        }
    }
    Nimber operator*(const Nimber &x) const {
        ull ret = 0;
        for (int d = 0; d < 8; ++d) {
            for (int e = 0; e < 8; ++e) {
                ret ^= precalc[d][e][small_table[(v >> (d * 8)) & 255][(x.v >> (e * 8)) & 255]];
            }
        }
        return Nimber(ret);
    }
    Nimber &operator*=(const Nimber &x) { return *this = *this * x; }
};

const std::array<std::array<unsigned, 256>, 256> Nimber::small_table = []() {
    std::array<std::array<unsigned, 256>, 256> ret;
    for (int i = 0; i < 256; ++i) {
        for (int j = 0; j < 256; ++j) ret[i][j] = _rec(i, j);
    }
    return ret;
}();
const std::array<std::array<std::array<unsigned long long, 256>, 8>, 8> Nimber::precalc = []() {
    std::array<std::array<std::array<unsigned long long, 256>, 8>, 8> ret;
    for (int d = 0; d < 8; ++d) {
        for (int e = 0; e < 8; ++e) {
            ull p = _rec(1ULL << (8 * d), 1ULL << (8 * e));
            for (int i = 0; i < 256; ++i) ret[d][e][i] = _rec(p, i);
        }
    }
    return ret;
}();


// UnionFind Tree (0-indexed), based on size of each disjoint set
struct UnionFind {
    std::vector<int> par, cou;
    UnionFind(int N = 0) : par(N), cou(N, 1) { iota(par.begin(), par.end(), 0); }
    int find(int x) { return (par[x] == x) ? x : (par[x] = find(par[x])); }
    bool unite(int x, int y) {
        x = find(x), y = find(y);
        if (x == y) return false;
        if (cou[x] < cou[y]) std::swap(x, y);
        par[y] = x, cou[x] += cou[y];
        return true;
    }
    int count(int x) { return cou[find(x)]; }
    bool same(int x, int y) { return find(x) == find(y); }
    std::vector<std::vector<int>> groups() {
        std::vector<std::vector<int>> ret(par.size());
        for (int i = 0; i < int(par.size()); ++i) ret[find(i)].push_back(i);
        ret.erase(std::remove_if(ret.begin(), ret.end(),
                                 [&](const std::vector<int> &v) { return v.empty(); }),
                  ret.end());
        return ret;
    }
};

#include <numeric>
#include <utility>
#include <vector>


// Weighted UnionFind
template <class S> struct WeightedUnionFind {
    std::vector<int> par, sz;
    std::vector<S> pot;
    WeightedUnionFind(int N = 0) : par(N), sz(N, 1), pot(N) {
        std::iota(par.begin(), par.end(), 0);
    }
    int find(int x) {
        if (par[x] != x) {
            int r = find(par[x]);
            pot[x] = pot[x] + pot[par[x]], par[x] = r;
        }
        return par[x];
    }
    bool unite(int s, int t, S rel_diff) {
        // Relate s and t by f[t] = f[s] + rel_diff
        // Return false iff contradiction happens.
        rel_diff = rel_diff + weight(s) + (-weight(t));
        if ((s = find(s)) == (t = find(t))) return rel_diff == 0;
        if (sz[s] < sz[t]) std::swap(s, t), rel_diff = -rel_diff;
        par[t] = s, sz[s] += sz[t], pot[t] = rel_diff;
        return true;
    }
    S weight(int x) { return find(x), pot[x]; }
    S diff(int s, int t) { return weight(t) + (-weight(s)); } // return f[t] - f[s]
    int count(int x) { return sz[find(x)]; }
    bool same(int s, int t) { return find(s) == find(t); }
};


constexpr int D = 30;
struct S {
    // lint dist_sum = 0;
    int sz = 1;
    std::vector<int> dv0cnt;
    S() : dv0cnt(D) {}

    lint dist_sum() const {
        lint ret = 0;
        REP(d, D) {
            lint n1 = dv0cnt.at(d), n0 = sz - dv0cnt.at(d);
            ret += (n1 * n0) << d;
        }
        dbg(make_tuple(sz, dv0cnt, ret));
        return ret;
    }
};

int main() {
    int N, X, Q;
    cin >> N >> X >> Q;

    WeightedUnionFind<Nimber> wuf(N);
    UnionFind uf(N);

    vector<S> components(N);
    // REP(i, N) components.at(i).vs.push_back(i);

    while (Q--) {
        int tp;
        cin >> tp;
        if (tp == 1) {
            int v, w;
            cin >> v >> w;
            wuf.unite(X, v, w);

            int s = uf.find(X), t = uf.find(v);
            uf.unite(s, t);
            if (uf.find(s) != s) swap(s, t);
            assert(uf.find(s) == s);

            w ^= wuf.diff(X, s).v ^ wuf.diff(t, v).v;

            REP(d, D) {
                if (((w >> d) & 1) == 0) components.at(s).dv0cnt.at(d) += components.at(t).dv0cnt.at(d);
                else components.at(s).dv0cnt.at(d) += components.at(t).sz - components.at(t).dv0cnt.at(d);
            }

            components.at(s).sz += components.at(t).sz;
            components.at(t) = S();
        } else if (tp == 2) {
            int u, v;
            cin >> u >> v;
            if (uf.same(u, v)) {
                auto d = wuf.diff(u, v);
                cout << d << '\n';
                X = (d.v + X) % N;
            } else {
                cout << -1 << '\n';
            }
        } else if (tp == 3) {
            int v;
            cin >> v;
            v = uf.find(v);
            cout << components.at(v).dist_sum() % 998244353 << '\n';
        } else if (tp == 4) {
            int value;
            cin >> value;
            X = (X + value) % N;
        }
    }
}

yukicoder

結果

テストケース

ソースコード