#886354 (C++17) No.2367 Painting Gascket

• 問題: No.2367 Painting Gascket
• ユーザー: Pachicobue
• 提出日時: 2023-06-30 23:38:49
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 1,409 ms / 2,000 ms
• コード長: 28,923 bytes
• コンパイル時間: 3,341 ms
• コンパイル使用メモリ: 228,500 KB
• 実行使用メモリ: 61,056 KB
• 最終ジャッジ日時: 2024-07-07 11:30:39
• 合計ジャッジ時間: 24,016 ms
• ジャッジサーバーID （参考情報）: judge1 / judge4

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	3 ms; 5,376 KB
testcase_02	AC	17 ms; 5,376 KB
testcase_03	AC	2 ms; 5,376 KB
testcase_04	AC	2 ms; 5,376 KB
testcase_05	AC	1 ms; 5,376 KB
testcase_06	AC	1 ms; 5,376 KB
testcase_07	AC	2 ms; 5,376 KB
testcase_08	AC	1,401 ms; 61,056 KB
testcase_09	AC	955 ms; 42,112 KB
testcase_10	AC	26 ms; 6,940 KB
testcase_11	AC	1,242 ms; 54,272 KB
testcase_12	AC	27 ms; 6,940 KB
testcase_13	AC	385 ms; 18,688 KB
testcase_14	AC	196 ms; 10,880 KB
testcase_15	AC	187 ms; 10,880 KB
testcase_16	AC	493 ms; 23,296 KB
testcase_17	AC	1,268 ms; 55,784 KB
testcase_18	AC	1,005 ms; 44,208 KB
testcase_19	AC	614 ms; 28,672 KB
testcase_20	AC	1,269 ms; 55,376 KB
testcase_21	AC	699 ms; 32,640 KB
testcase_22	AC	1,333 ms; 58,272 KB
testcase_23	AC	978 ms; 43,652 KB
testcase_24	AC	378 ms; 18,688 KB
testcase_25	AC	412 ms; 20,224 KB
testcase_26	AC	76 ms; 6,944 KB
testcase_27	AC	1,048 ms; 46,012 KB
testcase_28	AC	869 ms; 38,528 KB
testcase_29	AC	2 ms; 6,940 KB
testcase_30	AC	2 ms; 6,940 KB
testcase_31	AC	2 ms; 6,944 KB
testcase_32	AC	2 ms; 6,944 KB
testcase_33	AC	1,409 ms; 60,988 KB
testcase_34	AC	1,405 ms; 60,996 KB
testcase_35	AC	1,379 ms; 60,920 KB
testcase_36	AC	1,397 ms; 61,008 KB

ソースコード

#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 = i64>
constexpr T INF = (LIMMAX<T> - 1) / 2;
template<typename T = f80>
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... Args>
constexpr auto accumAll(const Vs& vs, Args... args)
{
    return std::accumulate(std::begin(vs), std::end(vs), args...);
}
template<typename Vs>
constexpr auto sumAll(const Vs& vs)
{
    return accumAll(vs, decltype(vs[0]){});
}
template<typename Vs>
constexpr auto gcdAll(const Vs& vs)
{
    return accumAll(vs, decltype(vs[0]){}, [&](auto v1, auto v2) { return std::gcd(v1, v2); });
}
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>
constexpr void concat(Vs& vs1, const Vs vs2)
{
    std::copy(std::begin(vs2), std::end(vs2), std::back_inserter(vs1));
}
template<typename Vs>
constexpr Vs concatted(Vs vs1, const Vs& vs2)
{
    concat(vs1, vs2);
    return vs1;
}
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 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 Vs>
constexpr auto maxAll(const Vs& vs)
{
    return *std::max_element(std::begin(vs), std::end(vs));
}
template<typename Vs>
constexpr auto minAll(const Vs& vs)
{
    return *std::min_element(std::begin(vs), std::end(vs));
}
template<typename Vs>
constexpr auto maxInd(const Vs& vs)
{
    return *std::max_element(std::begin(vs), std::end(vs));
}
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 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 Vec<int> iotaSort(const Vs& vs)
{
    auto is = iotaVec(vs.size());
    std::sort(std::begin(is), std::end(is), [&](int i, int j) { return vs[i] < vs[j]; });
    return is;
}
inline Vec<int> permInv(const Vec<int>& is)
{
    auto ris = is;
    for (int i = 0; i < (int)is.size(); i++) { ris[is[i]] = i; }
    return ris;
}
template<typename Vs, typename V>
constexpr void plusAll(Vs& vs, const V& v)
{
    for (auto& v_ : vs) { v_ += v; }
}
template<typename Vs>
constexpr void reverseAll(Vs& vs)
{
    std::reverse(std::begin(vs), std::end(vs));
}
template<typename Vs>
constexpr Vs reversed(Vs vs)
{
    reverseAll(vs);
    return vs;
}
template<typename Vs, typename... Args>
constexpr void sortAll(Vs& vs, Args... args)
{
    std::sort(std::begin(vs), std::end(vs), args...);
}
template<typename Vs, typename... Args>
constexpr Vs sorted(Vs vs, Args... args)
{
    sortAll(vs, args...);
    return vs;
}
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 bool isBitOn(u64 mask, int ind) { return (mask >> ind) & 1_u64; }
constexpr bool isBitOff(u64 mask, int ind) { return not isBitOn(mask, ind); }
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 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; }
constexpr int popCount(u64 v) { return v ? __builtin_popcountll(v) : 0; }
constexpr bool popParity(u64 v) { return v > 0 and __builtin_parity(v) == 1; }
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(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, typename F>
inline T fbinSearch(T ng, T ok, F check, int times)
{
    for (auto _temp_name_0 [[maybe_unused]] : rep(times)) {
        const T mid = (ok + ng) / 2;
        (check(mid) ? ok : ng) = mid;
    }
    return ok;
}
template<typename T>
constexpr T clampAdd(T x, T y, T min, T max)
{
    return std::clamp(x + y, min, max);
}
template<typename T>
constexpr T clampSub(T x, T y, T min, T max)
{
    return std::clamp(x - y, min, max);
}
template<typename T>
constexpr T clampMul(T x, T y, T min, T max)
{
    if (y < 0) { x = -x, y = -y; }
    const T xmin = ceilDiv(min, y);
    const T xmax = floorDiv(max, y);
    if (x < xmin) {
        return min;
    } else if (x > xmax) {
        return max;
    } else {
        return x * y;
    }
}
template<typename T>
constexpr T clampDiv(T x, T y, T min, T max)
{
    return std::clamp(floorDiv(x, y), min, max);
}
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_1, 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_2, 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_3, 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 T, int row, int column>
class StaticMatrix
{
    template<typename V>
    using IList = std::initializer_list<V>;
public:
    StaticMatrix()
    {
        for (auto& vs : m_vss) { fillAll(vs, T{}); }
    }
    StaticMatrix(const IList<IList<T>>& vss)
    {
        assert(row == vss.size());
        assert(column == vss.begin()->size());
        int i = 0;
        for (auto it = vss.begin(); it != vss.end(); it++) {
            std::copy(it->begin(), it->end(), m_vss[i++].begin());
        }
    }
    StaticMatrix(const StaticMatrix& m) : m_vss{m.m_vss} {}
    StaticMatrix& operator=(const StaticMatrix& m)
    {
        for (const int i : rep(row)) {
            for (const int j : rep(column)) { m_vss[i][j] = m[i][j]; }
        }
        return *this;
    }
    const Arr<T, column>& operator[](const int r) const { return m_vss[r]; }
    Arr<T, column>& operator[](const int r) { return m_vss[r]; }
    friend StaticMatrix operator-(const StaticMatrix& m)
    {
        StaticMatrix ans;
        for (const int r : rep(row)) {
            for (const int c : rep(column)) { ans[r][c] = -m[r][c]; }
        }
        return ans;
    }
    friend StaticMatrix operator+(const StaticMatrix& m1, const StaticMatrix& m2)
    {
        StaticMatrix ans;
        for (const int r : rep(row)) {
            for (const int c : rep(column)) { ans[r][c] = m1[r][c] + m2[r][c]; }
        }
        return ans;
    }
    friend StaticMatrix operator-(const StaticMatrix& m1, const StaticMatrix& m2)
    {
        StaticMatrix ans;
        for (const int r : rep(row)) {
            for (const int c : rep(column)) { ans[r][c] = m1[r][c] - m2[r][c]; }
        }
        return ans;
    }
    template<int c>
    friend StaticMatrix operator*(const StaticMatrix<T, row, c>& m1,
                                  const StaticMatrix<T, c, column>& m2)
    {
        StaticMatrix<T, row, column> ans;
        for (const int i : rep(row)) {
            for (const int j : rep(column)) {
                for (const int k : rep(c)) { ans[i][j] += m1[i][k] * m2[k][j]; }
            }
        }
        return ans;
    }
    friend StaticMatrix operator*(const StaticMatrix& m, const T& t)
    {
        StaticMatrix ans;
        for (const int r : rep(row)) {
            for (const int c : rep(column)) { ans[r][c] = m[r][c] * t; }
        }
        return ans;
    }
    friend StaticMatrix operator/(const StaticMatrix& m, const T& t)
    {
        StaticMatrix ans;
        for (const int r : rep(row)) {
            for (const int c : rep(column)) { ans[r][c] = m[r][c] / t; }
        }
        return ans;
    }
    friend StaticMatrix operator*(const T& t, const StaticMatrix& m) { return m * t; }
    friend StaticMatrix& operator+=(StaticMatrix& m1, const StaticMatrix& m2)
    {
        return m1 = m1 + m2;
    }
    friend StaticMatrix& operator-=(StaticMatrix& m1, const StaticMatrix& m2)
    {
        return m1 = m1 - m2;
    }
    friend StaticMatrix& operator*=(StaticMatrix& m1, const StaticMatrix& m2)
    {
        return m1 = m1 * m2;
    }
    friend StaticMatrix& operator*=(StaticMatrix& m, const T& t) { return m = m * t; }
    friend StaticMatrix& operator/=(StaticMatrix& m, const T& t) { return m = m / t; }
    friend std::ostream& operator<<(std::ostream& os, const StaticMatrix& m)
    {
        os << "[\n";
        for (const int i : rep(row)) {
            os << "[";
            for (const int j : rep(column)) { os << m[i][j] << ","; }
            os << "]\n";
        }
        return (os << "]");
    }
    template<typename Int>
    StaticMatrix pow(Int n) const
    {
        return powerMonoid(*this, n, I());
    }
    static StaticMatrix I()
    {
        static_assert(row == column, "StaticMatrix::I() should be rectangular!");
        StaticMatrix ans;
        for (const int i : rep(row)) { ans[i][i] = 1; }
        return ans;
    }
private:
    Arr<Arr<T, column>, row> m_vss;
};
template<typename T>
class Zipper
{
public:
    Zipper() {}
    Zipper(const Vec<T>& vs) : m_vs{vs}, m_calced(false) {}
    T unzip(int n)
    {
        assert(0 <= n and n < (int)m_vs.size());
        calc();
        return m_vs[n];
    }
    int zip(T v)
    {
        calc();
        return lbInd(m_vs, v);
    }
    void add(T v)
    {
        m_vs.push_back(v);
        m_calced = false;
    }
    void add(const Vec<T>& vs)
    {
        for (const auto& v : vs) { m_vs.push_back(v); }
        m_calced = false;
    }
    int size()
    {
        calc();
        return m_vs.size();
    }
    friend Ostream& operator<<(Ostream& os, const Zipper& zipper_)
    {
        auto zipper = zipper_;
        zipper.calc();
        return os << zipper.m_vs << "\n";
    }
private:
    void calc()
    {
        if (not m_calced) {
            sortAll(m_vs);
            m_vs.erase(std::unique(m_vs.begin(), m_vs.end()), m_vs.end());
            m_calced = true;
        }
    }
    Vec<T> m_vs;
    bool m_calced = true;
};
int main()
{
    const auto [K, N] = in.tup<int, i64>();
    using mint = modint_1000000007;
    auto kind = [&](const Arr<int, 3>& cs) {
        Set<int> Cs;
        for (int i : rep(3)) {
            if (cs[i] != 0) {
                Cs.insert(cs[i]);
            }
        }
        return Cs.size();
    };
    auto norm = [&](const Arr<int, 3>& cs) -> Arr<int, 3> {
        Vec<int> Cs;
        for (int i : rep(3)) {
            if (cs[i] != 0) {
                Cs.push_back(cs[i]);
            }
        }
        Zipper<int> zipper;
        for (int C : Cs) {
            zipper.add(C);
        }
        for (int& C : Cs) {
            C = zipper.zip(C) + 1;
        }
        while (Cs.size() < 3) {
            Cs.push_back(0);
        }
        sortAll(Cs);
        Arr<int, 3> ans;
        for (int i : rep(3)) {
            ans[i] = Cs[i];
        }
        return ans;
    };
    auto index
        = [&](const Arr<int, 3>& cs) { return cs[0] + cs[1] * 4 + cs[2] * 16; };
    auto calced = ndVec<bool>({K + 1, 64}, false);
    auto memo = ndVec<mint>({K + 1, 64}, -1);
    auto dp = Fix([&](auto self, int K, const Arr<int, 3>& cs) -> mint {
        if (K == 0) {
            const i64 Kind = kind(cs);
            return std::max(0_i64, N - Kind);
        } else {
            const int i = index(cs);
            if (calced[K][i]) {
                return memo[K][i];
            }
            const i64 Kind = kind(cs);
            mint ans = 0;
            for (int nc : irange(1, Kind + 2)) {
                const mint C = (nc == cs[0] or nc == cs[1] or nc == cs[2])
                                   ? 1_i64
                                   : N - Kind;
                mint prod = C;
                {
                    const auto ncs = norm({cs[0], cs[1], nc});
                    prod *= self(K - 1, ncs);
                }
                {
                    const auto ncs = norm({cs[1], cs[2], nc});
                    prod *= self(K - 1, ncs);
                }
                {
                    const auto ncs = norm({cs[2], cs[0], nc});
                    prod *= self(K - 1, ncs);
                }
                ans += prod;
            }
            calced[K][i] = true;
            return memo[K][i] = ans;
        }
    });
    out.ln(dp(K, Arr<int, 3>{0, 0, 0}));
    return 0;
}