結果
問題 | No.1240 Or Sum of Xor Pair |
ユーザー | kcvlex |
提出日時 | 2020-09-25 23:45:53 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 716 ms / 2,000 ms |
コード長 | 5,649 bytes |
コンパイル時間 | 1,484 ms |
コンパイル使用メモリ | 148,416 KB |
実行使用メモリ | 185,148 KB |
最終ジャッジ日時 | 2024-06-28 08:23:56 |
合計ジャッジ時間 | 13,352 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 56 ms
183,712 KB |
testcase_01 | AC | 54 ms
183,596 KB |
testcase_02 | AC | 55 ms
183,600 KB |
testcase_03 | AC | 62 ms
183,648 KB |
testcase_04 | AC | 62 ms
183,688 KB |
testcase_05 | AC | 62 ms
183,620 KB |
testcase_06 | AC | 59 ms
183,680 KB |
testcase_07 | AC | 58 ms
183,628 KB |
testcase_08 | AC | 59 ms
183,620 KB |
testcase_09 | AC | 60 ms
183,652 KB |
testcase_10 | AC | 97 ms
183,728 KB |
testcase_11 | AC | 108 ms
183,648 KB |
testcase_12 | AC | 150 ms
183,648 KB |
testcase_13 | AC | 137 ms
183,668 KB |
testcase_14 | AC | 151 ms
183,780 KB |
testcase_15 | AC | 700 ms
184,964 KB |
testcase_16 | AC | 694 ms
184,964 KB |
testcase_17 | AC | 680 ms
184,908 KB |
testcase_18 | AC | 692 ms
184,960 KB |
testcase_19 | AC | 697 ms
185,036 KB |
testcase_20 | AC | 716 ms
184,840 KB |
testcase_21 | AC | 688 ms
184,984 KB |
testcase_22 | AC | 683 ms
185,044 KB |
testcase_23 | AC | 685 ms
184,976 KB |
testcase_24 | AC | 698 ms
185,056 KB |
testcase_25 | AC | 667 ms
185,148 KB |
testcase_26 | AC | 687 ms
184,868 KB |
testcase_27 | AC | 55 ms
183,668 KB |
testcase_28 | AC | 54 ms
183,608 KB |
testcase_29 | AC | 217 ms
184,900 KB |
testcase_30 | AC | 151 ms
184,068 KB |
testcase_31 | AC | 160 ms
184,180 KB |
testcase_32 | AC | 282 ms
184,864 KB |
ソースコード
#include <limits> #include <initializer_list> #include <utility> #include <bitset> #include <tuple> #include <type_traits> #include <functional> #include <string> #include <array> #include <deque> #include <list> #include <queue> #include <stack> #include <vector> #include <map> #include <set> #include <unordered_map> #include <unordered_set> #include <iterator> #include <algorithm> #include <complex> #include <random> #include <numeric> #include <iostream> #include <iomanip> #include <sstream> #include <regex> #include <cassert> #include <cstddef> #include <variant> #define endl codeforces #define ALL(v) std::begin(v), std::end(v) #define ALLR(v) std::rbegin(v), std::rend(v) using ll = std::int64_t; using ull = std::uint64_t; using pii = std::pair<int, int>; using tii = std::tuple<int, int, int>; using pll = std::pair<ll, ll>; using tll = std::tuple<ll, ll, ll>; using size_type = ssize_t; template <typename T> using vec = std::vector<T>; template <typename T> using vvec = vec<vec<T>>; template <typename T> const T& var_min(const T &t) { return t; } template <typename T> const T& var_max(const T &t) { return t; } template <typename T, typename... Tail> const T& var_min(const T &t, const Tail&... tail) { return std::min(t, var_min(tail...)); } template <typename T, typename... Tail> const T& var_max(const T &t, const Tail&... tail) { return std::max(t, var_max(tail...)); } template <typename T, typename... Tail> void chmin(T &t, const Tail&... tail) { t = var_min(t, tail...); } template <typename T, typename... Tail> void chmax(T &t, const Tail&... tail) { t = var_max(t, tail...); } template <typename T, std::size_t Head, std::size_t... Tail> struct multi_dim_array { using type = std::array<typename multi_dim_array<T, Tail...>::type, Head>; }; template <typename T, std::size_t Head> struct multi_dim_array<T, Head> { using type = std::array<T, Head>; }; template <typename T, std::size_t... Args> using mdarray = typename multi_dim_array<T, Args...>::type; template <typename T, typename F, typename... Args> void fill_seq(T &t, F f, Args... args) { if constexpr (std::is_invocable<F, Args...>::value) { t = f(args...); } else { for (size_type i = 0; i < t.size(); i++) fill_seq(t[i], f, args..., i); } } template <typename T> vec<T> make_v(size_type sz) { return vec<T>(sz); } template <typename T, typename... Tail> auto make_v(size_type hs, Tail&&... ts) { auto v = std::move(make_v<T>(std::forward<Tail>(ts)...)); return vec<decltype(v)>(hs, v); } namespace init__ { struct InitIO { InitIO() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << std::fixed << std::setprecision(30); } } init_io; } template <typename T> T ceil_pow2(T bound) { T ret = 1; while (ret < bound) ret *= 2; return ret; } template <typename T> T ceil_div(T a, T b) { return a / b + !!(a % b); } struct Node { std::array<ll, 19> cnt; ll idx0, idx1; ll sum; Node() : idx0(-1), idx1(-1), sum(0) { std::fill(ALL(cnt), 0); } void init() { std::fill(ALL(cnt), 0); sum = 0; } }; std::array<Node, 1ll << 20> nodes; ll node_idx = 1; auto root = &nodes[0]; Node* get_node(Node *cur, bool f) { if (!f) { if (cur->idx0 != -1) return &nodes[cur->idx0]; else return nullptr; } else { if (cur->idx1 != -1) return &nodes[cur->idx1]; else return nullptr; } } void insert(Node *cur, ll shift, ll num) { if (shift == -1) { cur->sum++; for (ll i = 0; i < 19; i++) { ll mask = 1ll << i; if (!(mask & num)) continue; cur->cnt[i]++; } return; } ll mask = 1ll << shift; if (!(num & mask)) { if (cur->idx0 == -1) cur->idx0 = node_idx++; insert(get_node(cur, 0), shift - 1, num); } else { if (cur->idx1 == -1) cur->idx1 = node_idx++; insert(get_node(cur, 1), shift - 1, num); } cur->init(); auto merge = [&](Node *n) { if (!n) return; for (ll i = 0; i < 19; i++) cur->cnt[i] += n->cnt[i]; cur->sum += n->sum; }; merge(get_node(cur, 0)); merge(get_node(cur, 1)); } void insert(ll num) { insert(root, 18, num); } int main() { ll n, x; std::cin >> n >> x; vec<ll> av(n); for (ll &e : av) std::cin >> e; ll ans = 0; for (ll e : av) { std::array<ll, 19> cnt; std::fill(ALL(cnt), 0); ll sum = 0; auto cur = root; auto merge = [&](Node *n) { if (!n) return; for (ll i = 0; i < 19; i++) cnt[i] += n->cnt[i]; sum += n->sum; }; bool add = true; for (ll i = 18; 0 <= i; i--) { if (!cur) break; ll mask = 1ll << i; if (x & mask) { if (e & mask) { merge(get_node(cur, 1)); cur = get_node(cur, 0); } else { merge(get_node(cur, 0)); cur = get_node(cur, 1); } } else { if (e & mask) { cur = get_node(cur, 1); } else { cur = get_node(cur, 0); } } if (i == 0) add = false; } if (add) merge(cur); for (ll i = 0; i < 19; i++) { ll mask = 1ll << i; if (e & mask) chmax(cnt[i], sum); ans += mask * cnt[i]; } insert(e); } std::cout << ans << "\n"; return 0; }