#848991 (C++17) No.2243 Coaching Schedule

提出ソース
結果

問題	No.2243 Coaching Schedule
ユーザー	Pachicobue
提出日時	2023-03-14 12:42:48
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	562 ms / 4,000 ms
コード長	29,431 bytes
コンパイル時間	3,892 ms
コンパイル使用メモリ	266,972 KB
実行使用メモリ	10,024 KB
最終ジャッジ日時	2024-09-18 08:00:01
合計ジャッジ時間	11,088 ms
ジャッジサーバーID （参考情報）	judge5 / 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 5,248 KB
testcase_01	AC	2 ms 5,376 KB
testcase_02	AC	2 ms 5,376 KB
testcase_03	AC	2 ms 5,376 KB
testcase_04	AC	3 ms 5,376 KB
testcase_05	AC	100 ms 9,884 KB
testcase_06	AC	193 ms 9,884 KB
testcase_07	AC	191 ms 9,792 KB
testcase_08	AC	185 ms 9,760 KB
testcase_09	AC	254 ms 9,896 KB
testcase_10	AC	251 ms 9,876 KB
testcase_11	AC	252 ms 9,880 KB
testcase_12	AC	534 ms 9,964 KB
testcase_13	AC	562 ms 9,840 KB
testcase_14	AC	560 ms 10,024 KB
testcase_15	AC	562 ms 10,024 KB
testcase_16	AC	99 ms 9,876 KB
testcase_17	AC	51 ms 6,940 KB
testcase_18	AC	136 ms 9,424 KB
testcase_19	AC	228 ms 9,568 KB
testcase_20	AC	194 ms 6,940 KB
testcase_21	AC	82 ms 6,944 KB
testcase_22	AC	70 ms 6,940 KB
testcase_23	AC	10 ms 6,940 KB
testcase_24	AC	110 ms 6,944 KB
testcase_25	AC	15 ms 6,940 KB
testcase_26	AC	38 ms 6,944 KB
testcase_27	AC	119 ms 6,944 KB
testcase_28	AC	18 ms 6,940 KB
testcase_29	AC	163 ms 9,284 KB
testcase_30	AC	166 ms 9,712 KB
testcase_31	AC	174 ms 9,764 KB
testcase_32	AC	70 ms 6,940 KB
testcase_33	AC	41 ms 6,940 KB
testcase_34	AC	142 ms 9,268 KB
testcase_35	AC	178 ms 9,372 KB
testcase_36	AC	163 ms 9,612 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

raw source code
#include <bits/stdc++.h>
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
using f64 = double;
using f80 = long double;
using f128 = __float128;
constexpr i32 operator"" _i32(u64 v) { return v; }
constexpr u32 operator"" _u32(u64 v) { return v; }
constexpr i64 operator"" _i64(u64 v) { return v; }
constexpr u64 operator"" _u64(u64 v) { return v; }
constexpr f64 operator"" _f64(f80 v) { return v; }
constexpr f80 operator"" _f80(f80 v) { return v; }
using Istream = std::istream;
using Ostream = std::ostream;
using Str = std::string;
template<typename T>
using Lt = std::less<T>;
template<typename T>
using Gt = std::greater<T>;
template<int n>
using BSet = std::bitset<n>;
template<typename T1, typename T2>
using Pair = std::pair<T1, T2>;
template<typename... Ts>
using Tup = std::tuple<Ts...>;
template<typename T, int N>
using Arr = std::array<T, N>;
template<typename... Ts>
using Deq = std::deque<Ts...>;
template<typename... Ts>
using Set = std::set<Ts...>;
template<typename... Ts>
using MSet = std::multiset<Ts...>;
template<typename... Ts>
using USet = std::unordered_set<Ts...>;
template<typename... Ts>
using UMSet = std::unordered_multiset<Ts...>;
template<typename... Ts>
using Map = std::map<Ts...>;
template<typename... Ts>
using MMap = std::multimap<Ts...>;
template<typename... Ts>
using UMap = std::unordered_map<Ts...>;
template<typename... Ts>
using UMMap = std::unordered_multimap<Ts...>;
template<typename... Ts>
using Vec = std::vector<Ts...>;
template<typename... Ts>
using Stack = std::stack<Ts...>;
template<typename... Ts>
using Queue = std::queue<Ts...>;
template<typename T>
using MaxHeap = std::priority_queue<T>;
template<typename T>
using MinHeap = std::priority_queue<T, Vec<T>, Gt<T>>;
constexpr bool LOCAL = false;
constexpr bool OJ = not LOCAL;
template<typename T>
static constexpr T OjLocal(T oj, T local)
{
    return LOCAL ? local : oj;
}
template<typename T>
constexpr T LIMMIN = std::numeric_limits<T>::min();
template<typename T>
constexpr T LIMMAX = std::numeric_limits<T>::max();
template<typename T>
constexpr T INF = (LIMMAX<T> - 1) / 2;
template<typename T>
constexpr T PI = T{3.141592653589793238462643383279502884};
template<typename T = u64>
constexpr T TEN(int n)
{
    return n == 0 ? T{1} : TEN<T>(n - 1) * T{10};
}
template<typename T>
constexpr bool chmin(T& a, const T& b)
{
    return (a > b ? (a = b, true) : false);
}
template<typename T>
constexpr bool chmax(T& a, const T& b)
{
    return (a < b ? (a = b, true) : false);
}
template<typename T>
constexpr T floorDiv(T x, T y)
{
    assert(y != 0);
    if (y < 0) { x = -x, y = -y; }
    return x >= 0 ? x / y : (x - y + 1) / y;
}
template<typename T>
constexpr T ceilDiv(T x, T y)
{
    assert(y != 0);
    if (y < 0) { x = -x, y = -y; }
    return x >= 0 ? (x + y - 1) / y : x / y;
}
template<typename T, typename I>
constexpr T powerMonoid(T v, I n, const T& e)
{
    assert(n >= 0);
    if (n == 0) { return e; }
    return (n % 2 == 1 ? v * powerMonoid(v, n - 1, e) : powerMonoid(v * v, n / 2, e));
}
template<typename T, typename I>
constexpr T powerInt(T v, I n)
{
    return powerMonoid(v, n, T{1});
}
template<typename Vs, typename V>
constexpr void fillAll(Vs& arr, const V& v)
{
    if constexpr (std::is_convertible<V, Vs>::value) {
        arr = v;
    } else {
        for (auto& subarr : arr) { fillAll(subarr, v); }
    }
}
template<typename Vs>
constexpr void sortAll(Vs& vs)
{
    std::sort(std::begin(vs), std::end(vs));
}
template<typename Vs, typename C>
constexpr void sortAll(Vs& vs, C comp)
{
    std::sort(std::begin(vs), std::end(vs), comp);
}
template<typename Vs>
constexpr void reverseAll(Vs& vs)
{
    std::reverse(std::begin(vs), std::end(vs));
}
template<typename Vs>
constexpr Vs reversed(const Vs& vs)
{
    auto rvs = vs;
    reverseAll(rvs);
    return rvs;
}
template<typename V, typename Vs>
constexpr V sumAll(const Vs& vs)
{
    if constexpr (std::is_convertible<Vs, V>::value) {
        return static_cast<V>(vs);
    } else {
        V ans = 0;
        for (const auto& v : vs) { ans += sumAll<V>(v); }
        return ans;
    }
}
template<typename Vs>
constexpr int minInd(const Vs& vs)
{
    return std::min_element(std::begin(vs), std::end(vs)) - std::begin(vs);
}
template<typename Vs>
constexpr int maxInd(const Vs& vs)
{
    return std::max_element(std::begin(vs), std::end(vs)) - std::begin(vs);
}
template<typename Vs, typename V>
constexpr int lbInd(const Vs& vs, const V& v)
{
    return std::lower_bound(std::begin(vs), std::end(vs), v) - std::begin(vs);
}
template<typename Vs, typename V>
constexpr int ubInd(const Vs& vs, const V& v)
{
    return std::upper_bound(std::begin(vs), std::end(vs), v) - std::begin(vs);
}
template<typename Vs, typename V>
constexpr void plusAll(Vs& vs, const V& v)
{
    for (auto& v_ : vs) { v_ += v; }
}
template<typename Vs>
constexpr void concat(Vs& vs1, const Vs& vs2)
{
    std::copy(std::begin(vs2), std::end(vs2), std::back_inserter(vs1));
}
template<typename Vs>
constexpr void concatted(const Vs& vs1, const Vs& vs2)
{
    auto vs = vs1;
    concat(vs, vs2);
    return vs;
}
template<typename T, typename F>
constexpr Vec<T> genVec(int n, F gen)
{
    Vec<T> ans;
    std::generate_n(std::back_inserter(ans), n, gen);
    return ans;
}
template<typename T = int>
constexpr Vec<T> iotaVec(int n, T offset = 0)
{
    Vec<T> ans(n);
    std::iota(std::begin(ans), std::end(ans), offset);
    return ans;
}
template<typename Vs>
constexpr void rearrange(Vs& vs, const Vec<int>& is)
{
    auto vs_ = vs;
    for (int i = 0; i < (int)is.size(); i++) { vs[i] = vs_[is[i]]; }
}
inline Vec<int> reversePerm(const Vec<int>& is)
{
    auto ris = is;
    for (int i = 0; i < (int)is.size(); i++) { ris[is[i]] = i; }
    return ris;
}
inline Ostream& operator<<(Ostream& os, i128 v)
{
    bool minus = false;
    if (v < 0) { minus = true, v = -v; }
    Str ans;
    if (v == 0) { ans = "0"; }
    while (v) { ans.push_back('0' + v % 10), v /= 10; }
    std::reverse(ans.begin(), ans.end());
    return os << (minus ? "-" : "") << ans;
}
inline Ostream& operator<<(Ostream& os, u128 v)
{
    Str ans;
    if (v == 0) { ans = "0"; }
    while (v) { ans.push_back('0' + v % 10), v /= 10; }
    std::reverse(ans.begin(), ans.end());
    return os << ans;
}
constexpr int popCount(u64 v) { return v ? __builtin_popcountll(v) : 0; }
constexpr int topBit(u64 v) { return v == 0 ? -1 : 63 - __builtin_clzll(v); }
constexpr int lowBit(u64 v) { return v == 0 ? 64 : __builtin_ctzll(v); }
constexpr int bitWidth(u64 v) { return topBit(v) + 1; }
constexpr u64 bitCeil(u64 v) { return v ? (1_u64 << bitWidth(v - 1)) : 1_u64; }
constexpr u64 bitFloor(u64 v) { return v ? (1_u64 << topBit(v)) : 0_u64; }
constexpr bool hasSingleBit(u64 v) { return (v > 0) and ((v & (v - 1)) == 0); }
constexpr bool isBitOn(u64 mask, int ind) { return (mask >> ind) & 1_u64; }
constexpr bool isBitOff(u64 mask, int ind) { return not isBitOn(mask, ind); }
constexpr u64 bitMask(int bitWidth) { return (bitWidth == 64 ? ~0_u64 : (1_u64 << bitWidth) - 1); }
constexpr u64 bitMask(int start, int end) { return bitMask(end - start) << start; }
template<typename F>
struct Fix : F
{
    constexpr Fix(F&& f) : F{std::forward<F>(f)} {}
    template<typename... Args>
    constexpr auto operator()(Args&&... args) const
    {
        return F::operator()(*this, std::forward<Args>(args)...);
    }
};
class irange
{
private:
    struct itr
    {
        constexpr itr(i64 start = 0, i64 step = 1) : m_cnt{start}, m_step{step} {}
        constexpr bool operator!=(const itr& it) const { return m_cnt != it.m_cnt; }
        constexpr i64 operator*() { return m_cnt; }
        constexpr itr& operator++() { return m_cnt += m_step, *this; }
        i64 m_cnt, m_step;
    };
    i64 m_start, m_end, m_step;
public:
    static constexpr i64 cnt(i64 start, i64 end, i64 step)
    {
        if (step == 0) { return -1; }
        const i64 d = (step > 0 ? step : -step);
        const i64 l = (step > 0 ? start : end);
        const i64 r = (step > 0 ? end : start);
        i64 n = (r - l) / d + ((r - l) % d ? 1 : 0);
        if (l >= r) { n = 0; }
        return n;
    }
    constexpr irange(i64 start, i64 end, i64 step = 1)
        : m_start{start}, m_end{m_start + step * cnt(start, end, step)}, m_step{step}
    {
        assert(step != 0);
    }
    constexpr itr begin() const { return itr{m_start, m_step}; }
    constexpr itr end() const { return itr{m_end, m_step}; }
};
constexpr irange rep(i64 end) { return irange(0, end, 1); }
constexpr irange per(i64 rend) { return irange(rend - 1, -1, -1); }
class Scanner
{
public:
    Scanner(Istream& is = std::cin) : m_is{is} { m_is.tie(nullptr)->sync_with_stdio(false); }
    template<typename T>
    T val()
    {
        T v;
        return m_is >> v, v;
    }
    template<typename T>
    T val(T offset)
    {
        return val<T>() - offset;
    }
    template<typename T>
    Vec<T> vec(int n)
    {
        return genVec<T>(n, [&]() { return val<T>(); });
    }
    template<typename T>
    Vec<T> vec(int n, T offset)
    {
        return genVec<T>(n, [&]() { return val<T>(offset); });
    }
    template<typename T>
    Vec<Vec<T>> vvec(int n, int m)
    {
        return genVec<Vec<T>>(n, [&]() { return vec<T>(m); });
    }
    template<typename T>
    Vec<Vec<T>> vvec(int n, int m, const T offset)
    {
        return genVec<Vec<T>>(n, [&]() { return vec<T>(m, offset); });
    }
    template<typename... Args>
    auto tup()
    {
        return Tup<Args...>{val<Args>()...};
    }
    template<typename... Args>
    auto tup(const Args&... offsets)
    {
        return Tup<Args...>{val<Args>(offsets)...};
    }
private:
    Istream& m_is;
};
inline Scanner in;
class Printer
{
public:
    Printer(Ostream& os = std::cout) : m_os{os} { m_os << std::fixed << std::setprecision(15); }
    template<typename... Args>
    int operator()(const Args&... args)
    {
        return dump(args...), 0;
    }
    template<typename... Args>
    int ln(const Args&... args)
    {
        return dump(args...), m_os << '\n', 0;
    }
    template<typename... Args>
    int el(const Args&... args)
    {
        return dump(args...), m_os << std::endl, 0;
    }
    int YES(bool b = true) { return ln(b ? "YES" : "NO"); }
    int NO(bool b = true) { return YES(not b); }
    int Yes(bool b = true) { return ln(b ? "Yes" : "No"); }
    int No(bool b = true) { return Yes(not b); }
private:
    template<typename T>
    void dump(const T& v)
    {
        m_os << v;
    }
    template<typename T>
    void dump(const Vec<T>& vs)
    {
        for (int i : rep(vs.size())) { m_os << (i ? " " : ""), dump(vs[i]); }
    }
    template<typename T>
    void dump(const Vec<Vec<T>>& vss)
    {
        for (int i : rep(vss.size())) { m_os << (i ? "\n" : ""), dump(vss[i]); }
    }
    template<typename T, typename... Ts>
    int dump(const T& v, const Ts&... args)
    {
        return dump(v), m_os << ' ', dump(args...), 0;
    }
    Ostream& m_os;
};
inline Printer out;
template<typename T, int n, int i = 0>
auto ndVec(int const (&szs)[n], const T x = T{})
{
    if constexpr (i == n) {
        return x;
    } else {
        return std::vector(szs[i], ndVec<T, n, i + 1>(szs, x));
    }
}
template<typename T, typename F>
inline T binSearch(T ng, T ok, F check)
{
    while (std::abs(ok - ng) > 1) {
        const T mid = (ok + ng) / 2;
        (check(mid) ? ok : ng) = mid;
    }
    return ok;
}
template<typename T>
constexpr Pair<T, T> extgcd(const T a, const T b) // [x,y] -> ax+by=gcd(a,b)
{
    static_assert(std::is_signed_v<T>, "Signed integer is allowed.");
    assert(a != 0 or b != 0);
    if (a >= 0 and b >= 0) {
        if (a < b) {
            const auto [y, x] = extgcd(b, a);
            return {x, y};
        }
        if (b == 0) { return {1, 0}; }
        const auto [x, y] = extgcd(b, a % b);
        return {y, x - (a / b) * y};
    } else {
        auto [x, y] = extgcd(std::abs(a), std::abs(b));
        if (a < 0) { x = -x; }
        if (b < 0) { y = -y; }
        return {x, y};
    }
}
template<typename T>
constexpr T inverse(const T a, const T mod) // ax=gcd(a,M) (mod M)
{
    assert(a > 0 and mod > 0);
    auto [x, y] = extgcd(a, mod);
    if (x <= 0) { x += mod; }
    return x;
}
template<u32 mod_, u32 root_, u32 max2p_>
class modint
{
    template<typename U = u32&>
    static U modRef()
    {
        static u32 s_mod = 0;
        return s_mod;
    }
    template<typename U = u32&>
    static U rootRef()
    {
        static u32 s_root = 0;
        return s_root;
    }
    template<typename U = u32&>
    static U max2pRef()
    {
        static u32 s_max2p = 0;
        return s_max2p;
    }
public:
    static_assert(mod_ <= LIMMAX<i32>, "mod(signed int size) only supported!");
    static constexpr bool isDynamic() { return (mod_ == 0); }
    template<typename U = const u32>
    static constexpr std::enable_if_t<mod_ != 0, U> mod()
    {
        return mod_;
    }
    template<typename U = const u32>
    static std::enable_if_t<mod_ == 0, U> mod()
    {
        return modRef();
    }
    template<typename U = const u32>
    static constexpr std::enable_if_t<mod_ != 0, U> root()
    {
        return root_;
    }
    template<typename U = const u32>
    static std::enable_if_t<mod_ == 0, U> root()
    {
        return rootRef();
    }
    template<typename U = const u32>
    static constexpr std::enable_if_t<mod_ != 0, U> max2p()
    {
        return max2p_;
    }
    template<typename U = const u32>
    static std::enable_if_t<mod_ == 0, U> max2p()
    {
        return max2pRef();
    }
    template<typename U = u32>
    static void setMod(std::enable_if_t<mod_ == 0, U> m)
    {
        assert(1 <= m and m <= LIMMAX<i32>);
        modRef() = m;
        sinvRef() = {1, 1};
        factRef() = {1, 1};
        ifactRef() = {1, 1};
    }
    template<typename U = u32>
    static void setRoot(std::enable_if_t<mod_ == 0, U> r)
    {
        rootRef() = r;
    }
    template<typename U = u32>
    static void setMax2p(std::enable_if_t<mod_ == 0, U> m)
    {
        max2pRef() = m;
    }
    constexpr modint() : m_val{0} {}
    constexpr modint(i64 v) : m_val{normll(v)} {}
    constexpr void setRaw(u32 v) { m_val = v; }
    constexpr modint operator-() const { return modint{0} - (*this); }
    constexpr modint& operator+=(const modint& m)
    {
        m_val = norm(m_val + m.val());
        return *this;
    }
    constexpr modint& operator-=(const modint& m)
    {
        m_val = norm(m_val + mod() - m.val());
        return *this;
    }
    constexpr modint& operator*=(const modint& m)
    {
        m_val = normll((i64)m_val * (i64)m.val() % (i64)mod());
        return *this;
    }
    constexpr modint& operator/=(const modint& m) { return *this *= m.inv(); }
    constexpr modint operator+(const modint& m) const
    {
        auto v = *this;
        return v += m;
    }
    constexpr modint operator-(const modint& m) const
    {
        auto v = *this;
        return v -= m;
    }
    constexpr modint operator*(const modint& m) const
    {
        auto v = *this;
        return v *= m;
    }
    constexpr modint operator/(const modint& m) const
    {
        auto v = *this;
        return v /= m;
    }
    constexpr bool operator==(const modint& m) const { return m_val == m.val(); }
    constexpr bool operator!=(const modint& m) const { return not(*this == m); }
    friend Istream& operator>>(Istream& is, modint& m)
    {
        i64 v;
        return is >> v, m = v, is;
    }
    friend Ostream& operator<<(Ostream& os, const modint& m) { return os << m.val(); }
    constexpr u32 val() const { return m_val; }
    template<typename I>
    constexpr modint pow(I n) const
    {
        return powerInt(*this, n);
    }
    constexpr modint inv() const { return inverse<i32>(m_val, mod()); }
    static modint sinv(u32 n)
    {
        auto& is = sinvRef();
        for (u32 i = (u32)is.size(); i <= n; i++) { is.push_back(-is[mod() % i] * (mod() / i)); }
        return is[n];
    }
    static modint fact(u32 n)
    {
        auto& fs = factRef();
        for (u32 i = (u32)fs.size(); i <= n; i++) { fs.push_back(fs.back() * i); }
        return fs[n];
    }
    static modint ifact(u32 n)
    {
        auto& ifs = ifactRef();
        for (u32 i = (u32)ifs.size(); i <= n; i++) { ifs.push_back(ifs.back() * sinv(i)); }
        return ifs[n];
    }
    static modint perm(int n, int k) { return k > n or k < 0 ? modint{0} : fact(n) * ifact(n - k); }
    static modint comb(int n, int k)
    {
        return k > n or k < 0 ? modint{0} : fact(n) * ifact(n - k) * ifact(k);
    }
private:
    static Vec<modint>& sinvRef()
    {
        static Vec<modint> is{1, 1};
        return is;
    }
    static Vec<modint>& factRef()
    {
        static Vec<modint> fs{1, 1};
        return fs;
    }
    static Vec<modint>& ifactRef()
    {
        static Vec<modint> ifs{1, 1};
        return ifs;
    }
    static constexpr u32 norm(u32 x) { return x < mod() ? x : x - mod(); }
    static constexpr u32 normll(i64 x) { return norm(u32(x % (i64)mod() + (i64)mod())); }
    u32 m_val;
};
using modint_1000000007 = modint<1000000007, 5, 1>;
using modint_998244353 = modint<998244353, 3, 23>;
template<int id>
using modint_dynamic = modint<0, 0, id>;
template<typename T = int>
class Graph
{
    struct Edge
    {
        Edge() = default;
        Edge(int i, int t, T c) : id{i}, to{t}, cost{c} {}
        int id;
        int to;
        T cost;
        operator int() const { return to; }
    };
public:
    Graph(int n) : m_v{n}, m_edges(n) {}
    void addEdge(int u, int v, bool bi = false)
    {
        assert(0 <= u and u < m_v);
        assert(0 <= v and v < m_v);
        m_edges[u].emplace_back(m_e, v, 1);
        if (bi) { m_edges[v].emplace_back(m_e, u, 1); }
        m_e++;
    }
    void addEdge(int u, int v, const T& c, bool bi = false)
    {
        assert(0 <= u and u < m_v);
        assert(0 <= v and v < m_v);
        m_edges[u].emplace_back(m_e, v, c);
        if (bi) { m_edges[v].emplace_back(m_e, u, c); }
        m_e++;
    }
    const Vec<Edge>& operator[](const int u) const
    {
        assert(0 <= u and u < m_v);
        return m_edges[u];
    }
    Vec<Edge>& operator[](const int u)
    {
        assert(0 <= u and u < m_v);
        return m_edges[u];
    }
    int v() const { return m_v; }
    int e() const { return m_e; }
    friend Ostream& operator<<(Ostream& os, const Graph& g)
    {
        for (int u : rep(g.v())) {
            for (const auto& [id, v, c] : g[u]) {
                os << "[" << id << "]: ";
                os << u << "->" << v << "(" << c << ")\n";
            }
        }
        return os;
    }
    Vec<T> sizes(int root = 0) const
    {
        const int N = v();
        assert(0 <= root and root < N);
        Vec<T> ss(N, 1);
        Fix([&](auto dfs, int u, int p) -> void {
            for ([[maybe_unused]] const auto& [_temp_name_0, v, c] : m_edges[u]) {
                if (v == p) { continue; }
                dfs(v, u);
                ss[u] += ss[v];
            }
        })(root, -1);
        return ss;
    }
    Vec<T> depths(int root = 0) const
    {
        const int N = v();
        assert(0 <= root and root < N);
        Vec<T> ds(N, 0);
        Fix([&](auto dfs, int u, int p) -> void {
            for ([[maybe_unused]] const auto& [_temp_name_1, v, c] : m_edges[u]) {
                if (v == p) { continue; }
                ds[v] = ds[u] + c;
                dfs(v, u);
            }
        })(root, -1);
        return ds;
    }
    Vec<int> parents(int root = 0) const
    {
        const int N = v();
        assert(0 <= root and root < N);
        Vec<int> ps(N, -1);
        Fix([&](auto dfs, int u, int p) -> void {
            for ([[maybe_unused]] const auto& [_temp_name_2, v, c] : m_edges[u]) {
                if (v == p) { continue; }
                ps[v] = u;
                dfs(v, u);
            }
        })(root, -1);
        return ps;
    }
private:
    int m_v;
    int m_e = 0;
    Vec<Vec<Edge>> m_edges;
};
template<typename mint>
class NumberTheoriticTransform
{
    // DynamicModint 非対応
    static_assert(not mint::isDynamic(), "class NTT: Not support dynamic modint.");
private:
    static constexpr u32 MOD = mint::mod();
    static constexpr u32 ROOT = mint::root();
    static constexpr u32 L_MAX = mint::max2p();
    static constexpr int N_MAX = (1 << L_MAX);
public:
    static Vec<mint> convolute(Vec<mint> as, Vec<mint> bs)
    {
        const int AN = as.size();
        const int BN = bs.size();
        const int CN = AN + BN - 1;
        const int N = bitCeil(CN);
        as.resize(N, 0), bs.resize(N, 0);
        transform(as, false), transform(bs, false);
        for (int i : rep(N)) { as[i] *= bs[i]; }
        transform(as, true);
        as.resize(CN);
        return as;
    }
    static void transform(Vec<mint>& as, bool rev)
    {
        const int N = as.size();
        assert(hasSingleBit(N));
        if (N == 1) { return; }
        const int L = topBit(N);
        const auto l_range = (rev ? irange(1, L + 1, 1) : irange(L, 0, -1));
        for (int l : l_range) {
            const int H = 1 << l;
            const int B = N / H;
            for (int b : rep(B)) {
                const mint W = zeta(l, rev);
                mint W_h = 1;
                for (int h : rep(H / 2)) {
                    const int y1 = H * b + h;
                    const int y2 = y1 + H / 2;
                    const mint a1 = as[y1];
                    const mint a2 = as[y2];
                    const mint na1 = (rev ? a1 + a2 * W_h : a1 + a2);
                    const mint na2 = (rev ? a1 - a2 * W_h : (a1 - a2) * W_h);
                    as[y1] = na1;
                    as[y2] = na2;
                    W_h *= W;
                }
            }
        }
        if (rev) {
            const mint iN = mint::sinv(N);
            for (auto& a : as) { a *= iN; }
        }
    }
private:
    static mint zeta(int i, bool rev)
    {
        static Vec<mint> zs; // zs[i] = 1の2^i乗根
        static Vec<mint> izs; // izs[i] = zs[i]の逆元
        if (zs.empty()) {
            zs.resize(L_MAX + 1, 1);
            izs.resize(L_MAX + 1, 1);
            zs[L_MAX] = mint(ROOT).pow((MOD - 1) / (1 << L_MAX));
            izs[L_MAX] = zs[L_MAX].inv();
            for (int l : per(L_MAX)) {
                zs[l] = zs[l + 1] * zs[l + 1];
                izs[l] = izs[l + 1] * izs[l + 1];
            }
        }
        return (rev ? izs[i] : zs[i]);
    }
};
class Garner
{
public:
    template<typename mint, typename mint1, typename mint2>
    static mint restore_mod(const mint1& x1, const mint2& x2)
    {
        constexpr auto m1 = mint1::mod();
        const auto [y0, y1] = coeff(x1, x2);
        return mint(y0.val()) + mint(y1.val()) * m1;
    }
    template<typename mint, typename mint1, typename mint2, typename mint3>
    static mint restore_mod(const mint1& x1, const mint2& x2, const mint3& x3)
    {
        constexpr auto m1 = mint1::mod();
        constexpr auto m2 = mint2::mod();
        const auto [y0, y1, y2] = coeff(x1, x2, x3);
        return mint(y0.val()) + mint(y1.val()) * m1 + mint(y2.val()) * m1 * m2;
    }
    template<typename mint1, typename mint2>
    static i64 restore_i64(const mint1& x1, const mint2& x2)
    {
        constexpr u32 m1 = mint1::mod();
        constexpr u32 m2 = mint2::mod();
        const auto [y0, y1] = coeff(x1, x2);
        constexpr u64 MAX = 1_u64 << 63;
        const i128 M = (i128)m1 * m2;
        i128 S = i128(y0.val()) + i128(y1.val()) * m1;
        if (S >= MAX) { S -= M; }
        return (i64)S;
    }
    template<typename mint1, typename mint2, typename mint3>
    static i64 restore_i64(const mint1& x1, const mint2& x2, const mint3& x3)
    {
        constexpr u32 m1 = mint1::mod();
        constexpr u32 m2 = mint2::mod();
        constexpr u32 m3 = mint3::mod();
        const auto [y0, y1, y2] = coeff(x1, x2, x3);
        constexpr u64 MAX = 1_u64 << 63;
        const i128 M = (i128)m1 * m2 * m3;
        i128 S = i128(y0.val()) + i128(y1.val()) * m1 + i128(y2.val()) * m1 * m2;
        if (S >= MAX) { S -= M; }
        return (i64)S;
    }
private:
    template<typename mint1, typename mint2>
    static Pair<mint1, mint2> coeff(const mint1& x1, const mint2& x2)
    {
        constexpr auto m1 = mint1::mod();
        constexpr mint2 m1_inv = mint2(m1).inv();
        const mint1 y0 = x1;
        const mint2 y1 = (x2 - mint2(y0.val())) * m1_inv;
        return {y0, y1};
    }
    template<typename mint1, typename mint2, typename mint3>
    static Tup<mint1, mint2, mint3> coeff(const mint1& x1, const mint2& x2, const mint3& x3)
    {
        constexpr auto m1 = mint1::mod();
        constexpr auto m2 = mint2::mod();
        constexpr mint2 m1_inv = mint2(m1).inv();
        constexpr mint3 m1m2_inv = (mint3(m1) * mint3(m2)).inv();
        const mint1 y0 = x1;
        const mint2 y1 = (x2 - mint2(y0.val())) * m1_inv;
        const mint3 y2 = (x3 - mint3(y0.val()) - mint3(y1.val()) * m1) * m1m2_inv;
        return {y0, y1, y2};
    }
};
template<typename mint>
Vec<mint> convolute_mod(const Vec<mint>& as, const Vec<mint>& bs)
{
    constexpr u32 L_MAX = mint::max2p();
    constexpr int N_MAX = (1 << L_MAX);
    const int AN = as.size();
    const int BN = bs.size();
    if (AN == 0 or BN == 0) { return {}; }
    if (AN > BN) { return convolute_mod(bs, as); }
    const int N = AN + BN - 1;
    if (AN * 2 <= BN) {
        Vec<mint> cs(N, 0);
        for (int sj : irange(0, BN, AN)) {
            const int tj = std::min(BN, sj + AN);
            const auto bbs = Vec<mint>(std::begin(bs) + sj, std::begin(bs) + tj);
            const auto bcs = convolute_mod(as, bbs);
            for (int dj : rep(bcs.size())) { cs[sj + dj] += bcs[dj]; }
        }
        return cs;
    }
    if (N <= N_MAX) {
        // mintはNTT Friendlyなのでそのまま畳み込み
        return NumberTheoriticTransform<mint>::convolute(as, bs);
    } else {
        assert(N <= (1 << 24));
        using submint1 = modint<469762049, 3, 26>;
        using submint2 = modint<167772161, 3, 25>;
        using submint3 = modint<754974721, 11, 24>;
        // mod 3つでGarner復元
        Vec<submint1> as1(AN), bs1(BN);
        Vec<submint2> as2(AN), bs2(BN);
        Vec<submint3> as3(AN), bs3(BN);
        for (int i : rep(AN)) { as1[i] = as[i].val(), as2[i] = as[i].val(), as3[i] = as[i].val(); }
        for (int i : rep(BN)) { bs1[i] = bs[i].val(), bs2[i] = bs[i].val(), bs3[i] = bs[i].val(); }
        const auto cs1 = NumberTheoriticTransform<submint1>::convolute(as1, bs1);
        const auto cs2 = NumberTheoriticTransform<submint2>::convolute(as2, bs2);
        const auto cs3 = NumberTheoriticTransform<submint3>::convolute(as3, bs3);
        Vec<mint> cs(N);
        for (int i : rep(N)) { cs[i] = Garner::restore_mod<mint>(cs1[i], cs2[i], cs3[i]); }
        return cs;
    }
}
template<typename I>
Vec<i64> convolute_i64(const Vec<I>& as, const Vec<I>& bs)
{
    const int AN = as.size();
    const int BN = bs.size();
    if (AN == 0 or BN == 0) { return {}; }
    if (AN > BN) { return convolute_i64<I>(bs, as); }
    const int N = AN + BN - 1;
    assert(N <= (1 << 24));
    if (AN * 2 <= BN) {
        Vec<i64> cs(N, 0);
        for (int sj : irange(0, BN, AN)) {
            const int tj = std::min(BN, sj + AN);
            const auto bbs = Vec<I>(std::begin(bs) + sj, std::begin(bs) + tj);
            const auto bcs = convolute_i64<I>(as, bbs);
            for (int dj : rep(bcs.size())) { cs[sj + dj] += bcs[dj]; }
        }
        return cs;
    }
    using submint1 = modint<469762049, 3, 26>;
    using submint2 = modint<167772161, 3, 25>;
    using submint3 = modint<754974721, 11, 24>;
    // mod 3つでGarner復元
    Vec<submint1> as1(AN), bs1(BN);
    Vec<submint2> as2(AN), bs2(BN);
    Vec<submint3> as3(AN), bs3(BN);
    for (int i : rep(AN)) { as1[i] = as[i], as2[i] = as[i], as3[i] = as[i]; }
    for (int i : rep(BN)) { bs1[i] = bs[i], bs2[i] = bs[i], bs3[i] = bs[i]; }
    const auto cs1 = NumberTheoriticTransform<submint1>::convolute(as1, bs1);
    const auto cs2 = NumberTheoriticTransform<submint2>::convolute(as2, bs2);
    const auto cs3 = NumberTheoriticTransform<submint3>::convolute(as3, bs3);
    Vec<i64> cs(N);
    for (int i : rep(N)) { cs[i] = Garner::restore_i64(cs1[i], cs2[i], cs3[i]); }
    return cs;
}
int main()
{
    using mint = modint_998244353;
    const auto [M, N] = in.tup<int, int>();
    const auto As = in.vec<int>(N, 1);
    Vec<int> ns(M, 0);
    for (int A : As) {
        ns[A]++;
    }
    Map<int, int> Ns;
    for (int i : rep(M)) {
        Ns[ns[i]]++;
    }
    const int K = ns.size();
    Vec<mint> f(N + 1);
    for (int i : rep(N + 1)) {
        f[i] = mint::ifact(i) * (i % 2 == 0 ? 1 : -1);
    }
    Vec<mint> g(N + 1, 1);
    for (int i : rep(N + 1)) {
        g[i] *= mint::fact(i).pow(K - 1);
        for (const auto& [n, cnt] : Ns) {
            if (i < n) {
                g[i] *= 0;
            } else {
                g[i] *= mint::ifact(i - n).pow(cnt);
            }
        }
    }
    auto h = convolute_mod(f, g);
    for (int i : rep(h.size())) {
        h[i] *= mint::fact(i);
    }
    mint ans = 0;
    for (int i : rep(N + 1)) {
        ans += h[i];
    }
    out.ln(ans);
    return 0;
}
yukicoder

結果

テストケース

ソースコード
