結果
問題 | No.1754 T-block Tiling |
ユーザー | RVindicatio |
提出日時 | 2021-11-20 14:01:55 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,581 bytes |
コンパイル時間 | 2,244 ms |
コンパイル使用メモリ | 169,820 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-11 14:54:18 |
合計ジャッジ時間 | 2,336 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | 1 ms
5,376 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; using ll = long long; const int INF = 1e9; const ll inf = 1LL<<60; template<int MOD> struct ModInt { static const int Mod = MOD; unsigned x; ModInt() : x(0) { } ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } int get() const { return (int)x; } ModInt &operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; } ModInt &operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; } ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; } ModInt &operator/=(ModInt that) { return *this *= that.inverse(); } ModInt operator+(ModInt that) const { return ModInt(*this) += that; } ModInt operator-(ModInt that) const { return ModInt(*this) -= that; } ModInt operator*(ModInt that) const { return ModInt(*this) *= that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } return ModInt(u); } bool operator==(ModInt that) const { return x == that.x; } bool operator!=(ModInt that) const { return x != that.x; } ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; } }; template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; }; template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) { ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; } typedef ModInt<998244353> mint; template<typename T> struct Combination { private: int sz; vector<T> F, F_; public: Combination(int sz) : sz(sz), F(sz+1), F_(sz+1) { F[0] = 1; for(int i = 0; i < sz; ++i) F[i+1] = F[i]*(i+1); F_.back() = (T)1/F.back(); for(int i = sz-1; i >= 0; --i) F_[i] = F_[i+1]*(i+1); } T C(int n, int k){ assert(n <= sz); if(n < 0 or k > n) return (T)0; return F[n]*F_[k]*F_[n-k]; } T P(int n, int k){ assert(n <= sz); if(n < 0 or k > n) return (T)0; return F[n]*F_[n-k]; } }; int main() { int t; cin >> t; Combination<mint> comb(1000); while (t--) { int n; cin >> n; mint ans = mint(0); for (int i=n; i>=1; i--) { int k = n-i; mint tmp = comb.C(k+(i-1), k); mint q = mint(2)^(i); ans += q*tmp; } cout << ans << endl; } }