結果
問題 | No.1100 Boxes |
ユーザー | fine |
提出日時 | 2020-06-26 23:15:42 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 23 ms / 2,000 ms |
コード長 | 4,658 bytes |
コンパイル時間 | 1,882 ms |
コンパイル使用メモリ | 168,444 KB |
実行使用メモリ | 6,784 KB |
最終ジャッジ日時 | 2024-07-04 23:49:47 |
合計ジャッジ時間 | 3,223 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 5 ms
6,656 KB |
testcase_01 | AC | 5 ms
6,528 KB |
testcase_02 | AC | 6 ms
6,528 KB |
testcase_03 | AC | 6 ms
6,656 KB |
testcase_04 | AC | 5 ms
6,528 KB |
testcase_05 | AC | 5 ms
6,656 KB |
testcase_06 | AC | 6 ms
6,528 KB |
testcase_07 | AC | 6 ms
6,528 KB |
testcase_08 | AC | 6 ms
6,656 KB |
testcase_09 | AC | 5 ms
6,656 KB |
testcase_10 | AC | 5 ms
6,528 KB |
testcase_11 | AC | 5 ms
6,656 KB |
testcase_12 | AC | 5 ms
6,656 KB |
testcase_13 | AC | 5 ms
6,656 KB |
testcase_14 | AC | 6 ms
6,528 KB |
testcase_15 | AC | 6 ms
6,656 KB |
testcase_16 | AC | 5 ms
6,528 KB |
testcase_17 | AC | 5 ms
6,528 KB |
testcase_18 | AC | 6 ms
6,784 KB |
testcase_19 | AC | 5 ms
6,656 KB |
testcase_20 | AC | 6 ms
6,656 KB |
testcase_21 | AC | 11 ms
6,656 KB |
testcase_22 | AC | 16 ms
6,528 KB |
testcase_23 | AC | 11 ms
6,656 KB |
testcase_24 | AC | 12 ms
6,656 KB |
testcase_25 | AC | 14 ms
6,656 KB |
testcase_26 | AC | 21 ms
6,528 KB |
testcase_27 | AC | 18 ms
6,656 KB |
testcase_28 | AC | 8 ms
6,528 KB |
testcase_29 | AC | 19 ms
6,784 KB |
testcase_30 | AC | 16 ms
6,656 KB |
testcase_31 | AC | 10 ms
6,656 KB |
testcase_32 | AC | 15 ms
6,528 KB |
testcase_33 | AC | 23 ms
6,656 KB |
testcase_34 | AC | 23 ms
6,656 KB |
testcase_35 | AC | 6 ms
6,656 KB |
testcase_36 | AC | 14 ms
6,656 KB |
testcase_37 | AC | 5 ms
6,528 KB |
testcase_38 | AC | 12 ms
6,656 KB |
testcase_39 | AC | 23 ms
6,528 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using P = pair<ll, ll>; constexpr char newl = '\n'; // https://noshi91.hatenablog.com/entry/2019/03/31/174006 template <std::uint_fast64_t Modulus> struct ModInt { using u64 = std::uint_fast64_t; static constexpr u64 MOD = Modulus; u64 val; constexpr ModInt(const u64 x = 0) noexcept : val(x % MOD) {} constexpr ModInt operator+() const noexcept { return ModInt(*this); } constexpr ModInt operator-() const noexcept { ModInt res(*this); if (res.val != 0) res.val = MOD - res.val; return res; } constexpr bool operator==(const ModInt& rhs) const noexcept { return val == rhs.val; } constexpr bool operator!=(const ModInt& rhs) const noexcept { return val != rhs.val; } // prefix increment/decrement constexpr ModInt& operator++() noexcept { return *this += ModInt(1); } constexpr ModInt& operator--() noexcept { return *this -= ModInt(1); } // postfix increment/decrement constexpr ModInt operator++(int) noexcept { ModInt tmp(*this); ++*this; return tmp; } constexpr ModInt operator--(int) noexcept { ModInt tmp(*this); --*this; return tmp; } constexpr ModInt operator+(const ModInt& rhs) const noexcept { return ModInt(*this) += rhs; } constexpr ModInt operator-(const ModInt& rhs) const noexcept { return ModInt(*this) -= rhs; } constexpr ModInt operator*(const ModInt& rhs) const noexcept { return ModInt(*this) *= rhs; } constexpr ModInt operator/(const ModInt& rhs) const noexcept { return ModInt(*this) /= rhs; } constexpr ModInt& operator+=(const ModInt& rhs) noexcept { val += rhs.val; if (val >= MOD) val -= MOD; return *this; } constexpr ModInt& operator-=(const ModInt& rhs) noexcept { if (val < rhs.val) val += MOD; val -= rhs.val; return *this; } constexpr ModInt& operator*=(const ModInt& rhs) noexcept { val = val * rhs.val % MOD; return *this; } // prime Modulus only constexpr ModInt& operator/=(const ModInt& rhs) noexcept { return *this *= rhs.inv(); } // prime Modulus only constexpr ModInt inv() const noexcept { return pow(*this, MOD - 2); } }; template<std::uint_fast64_t Modulus> constexpr ModInt<Modulus> pow(ModInt<Modulus> x, std::uint_fast64_t n) { ModInt<Modulus> res(1); while (n) { if (n & 1) res *= x; x *= x; n >>= 1; } return res; } template<std::uint_fast64_t Modulus> istream& operator>>(istream& is, ModInt<Modulus>& x) { std::uint_fast64_t val; is >> val; x = ModInt<Modulus>(val); return is; } template<std::uint_fast64_t Modulus> ostream& operator<<(ostream& os, const ModInt<Modulus>& x) { return os << x.val; } using mint = ModInt<998244353>; // g++ -Wl,--stack,[STACK SIZE] [file] でスタックサイズを増やすか、 // グローバル変数として宣言して使うこと!!! template<size_t MAXV, class T = mint> struct Comb { array<T, MAXV + 1> fact, fact_inv; constexpr Comb() noexcept { fact[0] = 1; for (size_t i = 1; i <= MAXV; i++) { fact[i] = fact[i - 1] * i; } fact_inv[MAXV] = fact[MAXV].inv(); for (size_t i = MAXV; i > 0; i--) { fact_inv[i - 1] = fact_inv[i] * i; } } constexpr T operator()(int n, int k) const noexcept { if (n < k || n < 0 || k < 0) return 0; return fact[n] * fact_inv[k] * fact_inv[n - k]; } }; const Comb<200000> comb; // 0 <= i <= k - 2 * j // 2 * j <= k - i // j <= [(k - i) / 2] // [(k - i) / 2] <= m // (k - 2 * m) <= i // sum_{i = 0}^{k - 1} (-1)^i (k, i) i^n 2^(k - i - 1) // -2 * 1 * 1 + 1 * 4 * int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n, K; cin >> n >> K; if (K % 2 == 1) { mint ans = 0; for (int i = 0; i <= K - 1; i++) { mint tmp = comb(K, i) * pow(mint(i), n) * pow(mint(2), K - i - 1); if (i % 2 == 0) ans += tmp; else ans -= tmp; } cout << ans << newl; } else { mint ans = 0; for (int i = 0; i <= K; i++) { mint tmp = comb(K, i) * pow(mint(i), n) * (i == K ? 1 : pow(mint(2), K - i - 1)); if (i % 2 == 0) ans += tmp; else ans -= tmp; } //cerr << ans << " " << pow(mint(K), n) << newl; ans = pow(mint(K), n) - ans; cout << ans << newl; } return 0; }