結果

問題 No.1465 Archaea
ユーザー scol_kpscol_kp
提出日時 2021-04-02 22:30:23
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 4,081 bytes
コンパイル時間 2,196 ms
コンパイル使用メモリ 212,456 KB
実行使用メモリ 12,900 KB
最終ジャッジ日時 2024-06-06 07:17:31
合計ジャッジ時間 4,991 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
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
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 3 ms
6,940 KB
testcase_03 AC 2 ms
6,940 KB
testcase_04 AC 1 ms
6,940 KB
testcase_05 AC 2 ms
6,944 KB
testcase_06 AC 2 ms
6,944 KB
testcase_07 WA -
testcase_08 AC 3 ms
6,940 KB
testcase_09 AC 132 ms
6,944 KB
testcase_10 AC 2 ms
6,944 KB
testcase_11 WA -
testcase_12 AC 5 ms
6,944 KB
testcase_13 AC 256 ms
10,556 KB
testcase_14 AC 116 ms
6,940 KB
testcase_15 AC 4 ms
6,940 KB
testcase_16 AC 6 ms
6,940 KB
testcase_17 WA -
testcase_18 AC 21 ms
6,944 KB
testcase_19 AC 125 ms
6,944 KB
testcase_20 AC 202 ms
8,940 KB
testcase_21 AC 346 ms
12,840 KB
testcase_22 AC 338 ms
12,900 KB
testcase_23 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

diff #

#include <bits/stdc++.h>
#define FASTIO
using namespace std;

using ll = long long;
using Vi = std::vector<int>;
using Vl = std::vector<ll>;
using Pii = std::pair<int, int>;
using Pll = std::pair<ll, ll>;

constexpr int I_INF = std::numeric_limits<int>::max();
constexpr ll L_INF = std::numeric_limits<ll>::max();

template <typename T1, typename T2>
inline bool chmin(T1& a, const T2& b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template <typename T1, typename T2>
inline bool chmax(T1& a, const T2& b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

template <std::ostream& os = std::cout>
class Prints {
private:
    class __Prints {
    public:
        __Prints(const char* sep, const char* term) : sep(sep), term(term) {}
        template <class... Args>
#if __cplusplus >= 201703L
        auto operator()(const Args&... args) const -> decltype((os << ... << std::declval<Args>()), void()) {
#else
        void operator()(const Args&... args) const {
#endif
            print(args...);
        }
        template <typename T>
#if __cplusplus >= 201703L
        auto pvec(const T& vec, size_t sz) const -> decltype(os << std::declval<decltype(std::declval<T>()[0])>(), void()) {
#else
        void pvec(const T& vec, size_t sz) const {
#endif
            for (size_t i = 0; i < sz; i++)
                os << vec[i] << (i == sz - 1 ? term : sep);
        }
        template <typename T>
#if __cplusplus >= 201703L
        auto pmat(const T& mat, size_t h, size_t w) const -> decltype(os << std::declval<decltype(std::declval<T>()[0][0])>(), void()) {
#else
        void pmat(const T& mat, size_t h, size_t w) const {
#endif
            for (size_t i = 0; i < h; i++)
                for (size_t j = 0; j < w; j++)
                    os << mat[i][j] << (j == w - 1 ? term : sep);
        }

    private:
        const char *sep, *term;
        void print() const { os << term; }
        void print_rest() const { os << term; }
        template <class T, class... Tail>
        void print(const T& head, const Tail&... tail) const { os << head, print_rest(tail...); }
        template <class T, class... Tail>
        void print_rest(const T& head, const Tail&... tail) const { os << sep << head, print_rest(tail...); }
    };

public:
    Prints() {}
    __Prints operator()(const char* sep = " ", const char* term = "\n") const { return __Prints(sep, term); }
};

Prints<> prints;
Prints<std::cerr> prints_err;

//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

void solve() {
    int N, K;
    cin >> N >> K;
    using Graph = std::vector<std::vector<int>>;
    Graph g(N + 1);
    vector<bool> ok(N + 1);
    auto dfs = [&](auto&& self, int x) -> void {
        static int cnt = 0;
        prints_err()(++cnt);
        if (x * 2 <= N && !ok[x * 2]) {
            ok[x * 2] = true;
            g[x].emplace_back(x * 2);
            self(self, x * 2);
        }
        if (x + 3 <= N && !ok[x + 3]) {
            ok[x + 3] = true;
            g[x].emplace_back(x + 3);
            self(self, x + 3);
        }
    };
    dfs(dfs, 1);
    Vi dist(N + 1, I_INF);
    queue<int> que;
    que.emplace(1);
    dist[1] = 0;
    while (!que.empty()) {
        auto x = que.front();
        que.pop();
        for (auto to : g[x]) {
            if (dist[to] == I_INF) {
                dist[to] = dist[x] + 1;
                que.emplace(to);
            }
        }
    }
    if (dist[N] <= K) {
        prints()("YES");
    } else {
        prints()("NO");
    }
}

//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

int main() {
#ifdef FASTIO
    std::cin.tie(nullptr), std::cout.tie(nullptr);
    std::ios::sync_with_stdio(false);
#endif
#ifdef FILEINPUT
    std::ifstream ifs("./in_out/input.txt");
    std::cin.rdbuf(ifs.rdbuf());
#endif
#ifdef FILEOUTPUT
    std::ofstream ofs("./in_out/output.txt");
    std::cout.rdbuf(ofs.rdbuf());
#endif
    std::cout << std::setprecision(18) << std::fixed;
    solve();
    std::cout << std::flush;
    return 0;
}
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