結果

問題 No.1083 余りの余り
ユーザー kcvlexkcvlex
提出日時 2020-06-19 21:42:21
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 18 ms / 3,000 ms
コード長 8,047 bytes
コンパイル時間 1,663 ms
コンパイル使用メモリ 151,800 KB
実行使用メモリ 8,724 KB
最終ジャッジ日時 2023-09-16 13:45:13
合計ジャッジ時間 3,057 ms
ジャッジサーバーID
（参考情報） 		judge11 / judge14
このコードへのチャレンジ
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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 2 ms
4,380 KB
testcase_01 AC 1 ms
4,380 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 2 ms
4,384 KB
testcase_04 AC 2 ms
4,380 KB
testcase_05 AC 6 ms
4,380 KB
testcase_06 AC 2 ms
4,384 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 1 ms
4,384 KB
testcase_09 AC 2 ms
4,380 KB
testcase_10 AC 2 ms
4,384 KB
testcase_11 AC 1 ms
4,384 KB
testcase_12 AC 2 ms
4,384 KB
testcase_13 AC 2 ms
4,380 KB
testcase_14 AC 1 ms
4,384 KB
testcase_15 AC 1 ms
4,384 KB
testcase_16 AC 2 ms
4,380 KB
testcase_17 AC 1 ms
4,384 KB
testcase_18 AC 10 ms
5,192 KB
testcase_19 AC 6 ms
4,384 KB
testcase_20 AC 2 ms
4,380 KB
testcase_21 AC 2 ms
4,384 KB
testcase_22 AC 1 ms
4,384 KB
testcase_23 AC 17 ms
7,480 KB
testcase_24 AC 18 ms
8,148 KB
testcase_25 AC 17 ms
8,724 KB
testcase_26 AC 17 ms
7,664 KB
testcase_27 AC 1 ms
4,380 KB
testcase_28 AC 17 ms
7,528 KB
testcase_29 AC 2 ms
4,384 KB
testcase_30 AC 1 ms
4,380 KB
testcase_31 AC 2 ms
4,380 KB
testcase_32 AC 1 ms
4,384 KB
testcase_33 AC 17 ms
7,872 KB
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

diff # 

#define CPP17
#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>
#ifdef CPP17
#include <variant>
#endif

// Yay!!
#define endl codeforces

// macros for iterator
#define ALL(v) std::begin(v), std::end(v)
#define ALLR(v) std::rbegin(v), std::rend(v)

// alias
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>;
template <typename T> using vec = std::vector<T>;
template <typename T> using vvec = vec<vec<T>>;

// variadic min/max
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...)); }

// variadic chmin/chmax
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...); }

// multi demension array
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;

#ifdef CPP17
// fill container
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 (ssize_t i = 0; i < t.size(); i++) fill_seq(t[i], f, args..., i); } }
#endif

// make multi dimension vector
template <typename T> vec<T> make_v(ssize_t sz) { return vec<T>(sz); }
template <typename T, typename... Tail> auto make_v(ssize_t hs, Tail&&... ts) { auto v = std::move(make_v<T>(std::forward<Tail>(ts)...)); return vec<decltype(v)>(hs, v); }

// init
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; 
}


namespace graph {

using Node = ll;
using Weight = ll;
using Edge = std::pair<Node, Weight>;

template <bool Directed>
struct Graph : public vvec<Edge> {
    using vvec<Edge>::vvec;

    void add_edge(Node f, Node t, Weight w = 1) {
        (*this)[f].emplace_back(t, w);
        if (!Directed) (*this)[t].emplace_back(f, w);
    }

    Graph<Directed> build_inv() const {
        Graph<Directed> ret(this->size());
        for (Node i = 0; i < this->size(); i++) {
            for (const Edge &e : (*this)[i]) {
                Node j;
                Weight w;
                std::tie(j, w) = e;
                if (!Directed && j < i) continue;
                ret.add_edge(j, i, w);
            }
        }

        return ret;
    }
};

template <typename Iterator>
class dst_iterator {
    Iterator ite;

public:
    dst_iterator(Iterator ite) : ite(ite) { }

    bool operator ==(const dst_iterator<Iterator> &oth) const {
        return ite == oth.ite;
    }

    bool operator !=(const dst_iterator<Iterator> &oth) const {
        return !(*this == oth);
    }

    bool operator <(const dst_iterator<Iterator> &oth) const {
        return ite < oth.ite;
    }

    bool operator >(const dst_iterator<Iterator> &oth) const {
        return ite > oth.ite;
    }

    bool operator <=(const dst_iterator<Iterator> &oth) const {
        return ite <= oth.ite;
    }

    bool operator >=(const dst_iterator<Iterator> &oth) const {
        return ite >= oth.ite;
    }

    const Node& operator *() {
        return ite->first;
    }

    const Node& operator *() const {
        return ite->first;
    }

    dst_iterator operator ++() {
        ++ite;
        return ite;
    }
};

class dst_iteration {
    using ite_type = vec<Edge>::const_iterator;
    const vec<Edge> &edges;

public:
    dst_iteration(const vec<Edge> &edges) : edges(edges) { }

    auto begin() const {
        return dst_iterator<ite_type>(edges.cbegin());
    }

    auto end() const {
        return dst_iterator<ite_type>(edges.cend());
    }
};

class dst_reverse_iteration {
    using ite_type = vec<Edge>::const_reverse_iterator;
    const vec<Edge> &edges;

public:
    dst_reverse_iteration(const vec<Edge> &edges) : edges(edges) { }

    auto begin() const {
        return dst_iterator<ite_type>(edges.crbegin());
    }

    auto end() const {
        return dst_iterator<ite_type>(edges.crend());
    }
};

dst_iteration dst(const vec<Edge> &edges) {
    return dst_iteration(edges);
}

dst_reverse_iteration rdst(const vec<Edge> &edges) {
    return dst_reverse_iteration(edges);
}

}

namespace graph {

template <typename Graph>
class StronglyConnectedComponents {
    const Graph &graph;
    Graph rgraph;
    vec<ll> label, scc_ord;

    void dfs1(ll cur, ll &l) {
        label[cur] = -2;
        for (const graph::Edge &e : graph[cur]) {
            ll nxt;
            std::tie(nxt, std::ignore) = e;
            if (label[nxt] != -1) continue;
            dfs1(nxt, l);
        }
        label[cur] = l++;
    }

    void write_label() {
        ll l = 0;
        for (ll i = 0; i < graph.size(); i++) if (label[i] == -1) dfs1(i, l);
    }

    void dfs2(ll cur, ll l, ll &idx, vec<ll> &result) {
        result[cur] = l;
        scc_ord[idx++] = cur;
        for (const graph::Edge &e : rgraph[cur]) {
            ll nxt;
            std::tie(nxt, std::ignore) = e;
            if (result[nxt] != -1) continue;
            dfs2(nxt, l, idx, result);
        }
    }

    vec<ll> build_scc() {
        ll l = 0;
        vec<ll> result(graph.size(), -1), ord(rgraph.size());
        std::iota(ALL(ord), 0ll);
        std::sort(ALL(ord), [&](ll i, ll j) { return label[i] > label[j]; });
        ll idx = 0;
        for (ll n : ord) if (result[n] == -1) dfs2(n, l++, idx, result);
        return result;
    }

public:
    StronglyConnectedComponents(const Graph &graph)
        : graph(graph), label(graph.size(), -1), scc_ord(graph.size())
    {
        rgraph = graph.build_inv();
    }

    vec<ll> build() {
        vec<ll> result(graph.size(), -1);
        write_label();
        return build_scc();
    }

    std::pair<::graph::Graph<true>, vec<ll>> build_scc_graph() {
        auto scc_label = build();
        ::graph::Graph<true> scc_graph(*std::max_element(ALL(scc_label)) + 1);
        for (ll from = 0; from < graph.size(); from++) for (auto &&e : graph[from]) {
            ll to;
            std::tie(to, std::ignore) = e;
            ll lf = scc_label[from], lt = scc_label[to];
            if (lf != lt) scc_graph.add_edge(lf, lt);
        }
        return std::make_pair(std::move(scc_graph), std::move(scc_label));
    }
};

template <typename Graph> using SCC = StronglyConnectedComponents<Graph>;

}

int main() {
    ll n, k;
    std::cin >> n >> k;
    vec<ll> av(n);
    for (ll &e : av) std::cin >> e;
    std::sort(ALLR(av));
    vec<ll> cur = { k };
    ll ans = 0;
    for (ll i = 0; i < n; i++) {
        if (i + 1 == n) {
            for (ll e : cur) chmax(ans, e % av[i]);
        } else {
            ll tmp = cur.size();
            for (ll j = 0; j < tmp; j++) cur.push_back(cur[j] % av[i]);
        }
    }

    std::cout << ans << "\n";
    return 0;
}
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