結果
問題 | No.1989 Pairing Multiset |
ユーザー | tonyu0 |
提出日時 | 2022-06-25 11:12:33 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 481 ms / 2,000 ms |
コード長 | 3,002 bytes |
コンパイル時間 | 991 ms |
コンパイル使用メモリ | 101,020 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-14 06:52:08 |
合計ジャッジ時間 | 7,410 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 480 ms
6,820 KB |
testcase_01 | AC | 479 ms
6,816 KB |
testcase_02 | AC | 480 ms
6,816 KB |
testcase_03 | AC | 481 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 479 ms
6,820 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 455 ms
6,816 KB |
testcase_09 | AC | 16 ms
6,820 KB |
testcase_10 | AC | 152 ms
6,820 KB |
testcase_11 | AC | 288 ms
6,816 KB |
testcase_12 | AC | 316 ms
6,816 KB |
testcase_13 | AC | 464 ms
6,820 KB |
testcase_14 | AC | 69 ms
6,820 KB |
testcase_15 | AC | 59 ms
6,816 KB |
testcase_16 | AC | 401 ms
6,816 KB |
testcase_17 | AC | 31 ms
6,816 KB |
testcase_18 | AC | 2 ms
6,820 KB |
testcase_19 | AC | 54 ms
6,816 KB |
testcase_20 | AC | 477 ms
6,816 KB |
ソースコード
#include <algorithm> #include <cmath> #include <iostream> #include <map> #include <numeric> #include <queue> #include <set> #include <vector> using namespace std; using ll = long long; #define rep(i, j, n) for (ll i = j; i < (n); ++i) #define rrep(i, j, n) for (ll i = (n)-1; j <= i; --i) #define all(a) a.begin(), a.end() template <typename T> std::ostream &operator<<(std::ostream &os, std::vector<T> &a) { for (size_t i = 0; i < a.size(); ++i) os << (i > 0 ? " " : "") << a[i]; return os << '\n'; } template <typename T> std::istream &operator>>(std::istream &is, std::vector<T> &a) { for (T &x : a) { is >> x; } return is; } [[maybe_unused]] constexpr long long MOD = 998244353; // constexpr long long MOD = 1000000007; [[maybe_unused]] constexpr int INF = 0x3f3f3f3f; [[maybe_unused]] constexpr long long INFL = 0x3f3f3f3f3f3f3f3fLL; template <long long mod = 1000000007> class modint { public: long long x; constexpr modint(const long long x = 0) noexcept : x(x % mod) {} constexpr long long &value() noexcept { return x; } constexpr const long long &value() const noexcept { return x; } 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 { if ((x += rhs.x) >= mod) x -= mod; return *this; } constexpr modint &operator-=(const modint rhs) noexcept { if ((x += mod - rhs.x) >= mod) x -= mod; return *this; } constexpr modint &operator*=(const modint rhs) noexcept { x = x * rhs.x % mod; return *this; } constexpr modint &operator/=(const modint rhs) noexcept { *this *= rhs.inverse(); return *this; } constexpr bool operator==(const modint &rhs) const { return x == rhs.x; } constexpr bool operator!=(const modint &rhs) const { return x != rhs.x; } modint inverse() const { long long a = x, b = mod, u = 1, v = 0, t; while (b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return modint(u + mod); } modint pow(long long exp) const { modint res(1), mul(x); while (exp > 0) { if (exp & 1) res *= mul; mul *= mul; exp >>= 1; } return res; } operator long long() const { return x; } friend ostream &operator<<(ostream &os, const modint &rhs) { return os << rhs.x; } friend istream &operator>>(istream &is, modint &a) { long long t; is >> t; a = modint<mod>(t); return is; } }; int main() { cin.tie(0)->sync_with_stdio(0); using mint = modint<MOD>; ll n, m; cin >> n >> m; mint ans = 1; rep(i, 0, n * 2 + 1) ans *= mint(n * 2 + m - i) * mint(i + 1).inverse(); cout << ans * mint(n); }