#972819 (C++23) No.2721 "Don't say N" Game

提出ソース
結果

問題	No.2721 "Don't say N" Game
コンテスト
ユーザー	ebi_fly
提出日時	2024-04-16 01:28:39
言語	C++23 (gcc 13.3.0 + boost 1.87.0)
結果	AC
実行時間	2 ms / 2,000 ms
コード長	12,005 bytes
コンパイル時間	3,144 ms
コンパイル使用メモリ	255,496 KB
実行使用メモリ	5,248 KB
最終ジャッジ日時	2024-10-06 10:30:23
合計ジャッジ時間	3,780 ms
ジャッジサーバーID （参考情報）	judge4 / judge1
このコードへのチャレンジ
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ファイルパターン	結果
sample	AC * 1
other	AC * 5
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
#line 1 "template/template.hpp"
#include <bits/stdc++.h>

#define rep(i, a, n) for (int i = (int)(a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = ((int)(n)-1); i >= (int)(a); i--)
#define Rep(i, a, n) for (i64 i = (i64)(a); i < (i64)(n); i++)
#define RRep(i, a, n) for (i64 i = ((i64)(n)-i64(1)); i >= (i64)(a); i--)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()

#line 2 "template/debug_template.hpp"

#line 4 "template/debug_template.hpp"

namespace ebi {

#ifdef LOCAL
#define debug(...)                                                      \
    std::cerr << "LINE: " << __LINE__ << "  [" << #__VA_ARGS__ << "]:", \
        debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif

void debug_out() {
    std::cerr << std::endl;
}

template <typename Head, typename... Tail> void debug_out(Head h, Tail... t) {
    std::cerr << " " << h;
    if (sizeof...(t) > 0) std::cerr << " :";
    debug_out(t...);
}

}  // namespace ebi
#line 2 "template/int_alias.hpp"

#line 4 "template/int_alias.hpp"

namespace ebi {

using ld = long double;
using std::size_t;
using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using u16 = std::uint16_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
using i128 = __int128_t;
using u128 = __uint128_t;

}  // namespace ebi
#line 2 "template/io.hpp"

#line 5 "template/io.hpp"
#include <optional>
#line 7 "template/io.hpp"

namespace ebi {

template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pa) {
    return os << pa.first << " " << pa.second;
}

template <typename T1, typename T2>
std::istream &operator>>(std::istream &os, std::pair<T1, T2> &pa) {
    return os >> pa.first >> pa.second;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec) {
    for (std::size_t i = 0; i < vec.size(); i++)
        os << vec[i] << (i + 1 == vec.size() ? "" : " ");
    return os;
}

template <typename T>
std::istream &operator>>(std::istream &os, std::vector<T> &vec) {
    for (T &e : vec) std::cin >> e;
    return os;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::optional<T> &opt) {
    if (opt) {
        os << opt.value();
    } else {
        os << "invalid value";
    }
    return os;
}

void fast_io() {
    std::cout << std::fixed << std::setprecision(15);
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
}

}  // namespace ebi
#line 2 "template/utility.hpp"

#line 5 "template/utility.hpp"

#line 2 "graph/base.hpp"

#line 5 "graph/base.hpp"
#include <ranges>
#line 7 "graph/base.hpp"

#line 2 "data_structure/simple_csr.hpp"

#line 6 "data_structure/simple_csr.hpp"

namespace ebi {

template <class E> struct simple_csr {
    simple_csr() = default;

    simple_csr(int n, const std::vector<std::pair<int, E>>& elements)
        : start(n + 1, 0), elist(elements.size()) {
        for (auto e : elements) {
            start[e.first + 1]++;
        }
        for (auto i : std::views::iota(0, n)) {
            start[i + 1] += start[i];
        }
        auto counter = start;
        for (auto [i, e] : elements) {
            elist[counter[i]++] = e;
        }
    }

    simple_csr(const std::vector<std::vector<E>>& es)
        : start(es.size() + 1, 0) {
        int n = es.size();
        for (auto i : std::views::iota(0, n)) {
            start[i + 1] = (int)es[i].size() + start[i];
        }
        elist.resize(start.back());
        for (auto i : std::views::iota(0, n)) {
            std::copy(es[i].begin(), es[i].end(), elist.begin() + start[i]);
        }
    }

    int size() const {
        return (int)start.size() - 1;
    }

    const auto operator[](int i) const {
        return std::ranges::subrange(elist.begin() + start[i],
                                     elist.begin() + start[i + 1]);
    }
    auto operator[](int i) {
        return std::ranges::subrange(elist.begin() + start[i],
                                     elist.begin() + start[i + 1]);
    }

    const auto operator()(int i, int l, int r) const {
        return std::ranges::subrange(elist.begin() + start[i] + l,
                                     elist.begin() + start[i + 1] + r);
    }
    auto operator()(int i, int l, int r) {
        return std::ranges::subrange(elist.begin() + start[i] + l,
                                     elist.begin() + start[i + 1] + r);
    }

  private:
    std::vector<int> start;
    std::vector<E> elist;
};

}  // namespace ebi
#line 9 "graph/base.hpp"

namespace ebi {

template <class T> struct Edge {
    int from, to;
    T cost;
    int id;
};

template <class E> struct Graph {
    using cost_type = E;
    using edge_type = Edge<cost_type>;

    Graph(int n_) : n(n_) {}

    Graph() = default;

    void add_edge(int u, int v, cost_type c) {
        buff.emplace_back(u, edge_type{u, v, c, m});
        edges.emplace_back(edge_type{u, v, c, m++});
    }

    void add_undirected_edge(int u, int v, cost_type c) {
        buff.emplace_back(u, edge_type{u, v, c, m});
        buff.emplace_back(v, edge_type{v, u, c, m});
        edges.emplace_back(edge_type{u, v, c, m});
        m++;
    }

    void read_tree(int offset = 1, bool is_weighted = false) {
        read_graph(n - 1, offset, false, is_weighted);
    }

    void read_parents(int offset = 1) {
        for (auto i : std::views::iota(1, n)) {
            int p;
            std::cin >> p;
            p -= offset;
            add_undirected_edge(p, i, 1);
        }
        build();
    }

    void read_graph(int e, int offset = 1, bool is_directed = false,
                    bool is_weighted = false) {
        for (int i = 0; i < e; i++) {
            int u, v;
            std::cin >> u >> v;
            u -= offset;
            v -= offset;
            if (is_weighted) {
                cost_type c;
                std::cin >> c;
                if (is_directed) {
                    add_edge(u, v, c);
                } else {
                    add_undirected_edge(u, v, c);
                }
            } else {
                if (is_directed) {
                    add_edge(u, v, 1);
                } else {
                    add_undirected_edge(u, v, 1);
                }
            }
        }
        build();
    }

    void build() {
        assert(!prepared);
        csr = simple_csr<edge_type>(n, buff);
        buff.clear();
        prepared = true;
    }

    int size() const {
        return n;
    }

    int node_number() const {
        return n;
    }

    int edge_number() const {
        return m;
    }

    edge_type get_edge(int i) const {
        return edges[i];
    }

    std::vector<edge_type> get_edges() const {
        return edges;
    }

    const auto operator[](int i) const {
        return csr[i];
    }
    auto operator[](int i) {
        return csr[i];
    }

  private:
    int n, m = 0;

    std::vector<std::pair<int,edge_type>> buff;

    std::vector<edge_type> edges;
    simple_csr<edge_type> csr;
    bool prepared = false;
};

}  // namespace ebi
#line 8 "template/utility.hpp"

namespace ebi {

template <class T> inline bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template <class T> inline bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

template <class T> T safe_ceil(T a, T b) {
    if (a % b == 0)
        return a / b;
    else if (a >= 0)
        return (a / b) + 1;
    else
        return -((-a) / b);
}

template <class T> T safe_floor(T a, T b) {
    if (a % b == 0)
        return a / b;
    else if (a >= 0)
        return a / b;
    else
        return -((-a) / b) - 1;
}

constexpr i64 LNF = std::numeric_limits<i64>::max() / 4;

constexpr int INF = std::numeric_limits<int>::max() / 2;

const std::vector<int> dy = {1, 0, -1, 0, 1, 1, -1, -1};
const std::vector<int> dx = {0, 1, 0, -1, 1, -1, 1, -1};

}  // namespace ebi
#line 2 "math/linear_sieve.hpp"

#line 4 "math/linear_sieve.hpp"

/*
    reference: https://37zigen.com/linear-sieve/
    verify:    https://atcoder.jp/contests/abc162/submissions/25095562
*/

#line 12 "math/linear_sieve.hpp"

namespace ebi {

struct linear_sieve {
  private:
    using u64 = std::uint64_t;
    int n;
    std::vector<int> sieve;
    std::vector<int> prime;

  public:
    linear_sieve(int _n) : n(_n), sieve(std::vector<int>(_n + 1, -1)) {
        for (int i = 2; i <= n; i++) {
            if (sieve[i] < 0) {
                sieve[i] = i;
                prime.emplace_back(i);
            }
            for (auto p : prime) {
                if (u64(p) * u64(i) > u64(n) || p > sieve[i]) break;
                sieve[p * i] = p;
            }
        }
    }

    std::vector<int> prime_table() const {
        return prime;
    }

    std::vector<std::pair<int, int>> prime_power_table(int m) const {
        assert(m <= n);
        std::vector<std::pair<int, int>> table(m + 1, {1, 1});
        for (int i = 2; i <= m; i++) {
            int p = sieve[i];
            table[i] = {p, p};
            if (sieve[i / p] == p) {
                table[i] = table[i / p];
                table[i].second *= p;
            }
        }
        return table;
    }

    std::vector<std::pair<int, int>> factorize(int x) {
        assert(x <= n);
        std::vector<std::pair<int, int>> res;
        while (x > 1) {
            int p = sieve[x];
            int exp = 0;
            if (p < 0) {
                res.emplace_back(x, 1);
                break;
            }
            while (sieve[x] == p) {
                x /= p;
                exp++;
            }
            res.emplace_back(p, exp);
        }
        return res;
    }

    std::vector<int> divisors(int x) {
        assert(x <= n);
        std::vector<int> res;
        res.emplace_back(1);
        auto pf = factorize(x);
        for (auto p : pf) {
            int sz = (int)res.size();
            for (int i = 0; i < sz; i++) {
                int ret = 1;
                for (int j = 0; j < p.second; j++) {
                    ret *= p.first;
                    res.emplace_back(res[i] * ret);
                }
            }
        }
        return res;
    }

    template <class T> std::vector<T> fast_zeta(const std::vector<T> &f) {
        std::vector<T> F = f;
        int sz = f.size();
        assert(sz <= n + 1);
        for (int i = 2; i < sz; i++) {
            if (sieve[i] != i) continue;
            for (int j = (sz - 1) / i; j >= 1; j--) {
                F[j] += F[j * i];
            }
        }
        return F;
    }

    template <class T> std::vector<T> fast_mobius(const std::vector<T> &F) {
        std::vector<T> f = F;
        int sz = F.size();
        assert(sz <= n + 1);
        for (int i = 2; i < sz; i++) {
            if (sieve[i] != i) continue;
            for (int j = 1; j * i < sz; j++) {
                f[j] -= f[j * i];
            }
        }
        return f;
    }

    template <class modint> std::vector<modint> pow_table(int k) {
        std::vector<modint> table(n + 1, 1);
        table[0] = 0;
        for (int i = 2; i <= n; i++) {
            if (sieve[i] == i) {
                table[i] = modint(i).pow(k);
                continue;
            }
            table[i] = table[sieve[i]] * table[i / sieve[i]];
        }
        return table;
    }

    template <class modint> std::vector<modint> inv_table() {
        return pow_table(modint::mod() - 2);
    }
};

}  // namespace ebi
#line 3 "a.cpp"

namespace ebi {

linear_sieve sieve(2000);

void main_() {
    int n;
    std::cin >> n;
    for(auto [p, c]: sieve.factorize(n)) {
        if((c + 1) % 2 == 0) {
            std::cout << "K\n";
            return;
        }
    }
    std::cout << "P\n";
}

}  // namespace ebi

int main() {
    ebi::fast_io();
    int t = 1;
    std::cin >> t;
    while (t--) {
        ebi::main_();
    }
    return 0;
}
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結果

ソースコード
