結果
問題 | No.336 門松列列 |
ユーザー | cutmdo |
提出日時 | 2023-08-05 00:33:35 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 142 ms / 2,000 ms |
コード長 | 5,398 bytes |
コンパイル時間 | 2,791 ms |
コンパイル使用メモリ | 253,740 KB |
実行使用メモリ | 50,176 KB |
最終ジャッジ日時 | 2024-06-12 01:15:44 |
合計ジャッジ時間 | 4,934 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 132 ms
50,112 KB |
testcase_01 | AC | 110 ms
49,936 KB |
testcase_02 | AC | 109 ms
50,048 KB |
testcase_03 | AC | 112 ms
50,048 KB |
testcase_04 | AC | 140 ms
50,104 KB |
testcase_05 | AC | 111 ms
50,080 KB |
testcase_06 | AC | 110 ms
50,048 KB |
testcase_07 | AC | 120 ms
50,068 KB |
testcase_08 | AC | 127 ms
50,176 KB |
testcase_09 | AC | 141 ms
50,144 KB |
testcase_10 | AC | 142 ms
50,064 KB |
testcase_11 | AC | 142 ms
50,156 KB |
ソースコード
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,avx512f") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <iostream> #include <iomanip> #include <string> #include <cmath> #include <algorithm> #include <vector> #include <set> #include <map> #include <unordered_map> #include <unordered_set> #include <list> #include <stack> #include <queue> #include <bitset> #include <numeric> #include <cassert> #include <memory> #include <random> #include <functional> #include <complex> #include <immintrin.h> #include <stdexcept> #ifdef DEBUG #include "./CompetitiveProgrammingCpp/Utils/debug.hpp" #include "./CompetitiveProgrammingCpp/Utils/Timer.hpp" #include "./CompetitiveProgrammingCpp/Utils/sample.hpp" #else #define dump(...) template<class T>constexpr inline auto d_val(T a, T b) { return a; } #endif /* macro */ #define FOR(i, b, e) for(ll i = (ll)(b); i < (ll)(e); ++i) #define RFOR(i, b, e) for(ll i = (ll)((e)-1); i >= (ll)(b); --i) #define REP(i, n) FOR(i, 0, (n)) #define RREP(i, n) RFOR(i, 0, (n)) #define REPC(x,c) for(const auto& x:(c)) #define REPI2(it,b,e) for(auto it = (b); it != (e); ++it) #define REPI(it,c) REPI2(it, (c).begin(), (c).end()) #define RREPI(it,c) REPI2(it, (c).rbegin(), (c).rend()) #define REPI_ERACE2(it, b, e) for(auto it = (b); it != (e);) #define REPI_ERACE(it, c) REPI_ERACE2(it, (c).begin(), (c).end()) #define ALL(x) (x).begin(),(x).end() /* macro func */ template<class T> inline auto sort(T& t) { std::sort(ALL(t)); } template<class T> inline auto rsort(T& t) { std::sort((t).rbegin(), (t).rend()); } template<class T, class S> inline auto chmax(T& t, const S& s) { if(s > t) { t = s; return true; } return false; } template<class T, class S> inline auto chmin(T& t, const S& s) { if(s < t) { t = s; return true; } return false; } inline auto BR() { std::cout << "\n"; } /* type define */ using ll = long long; template<class T> using V = std::vector<T>; using VS = V<std::string>; using VL = V<ll>; using VVL = V<VL>; template<class T = ll, class U = T> using P = std::pair<T, U>; using PAIR = P<ll>; /* using std */ using std::cout; using std::cin; using std::cerr; constexpr char endl = '\n'; /* Initial processing */ struct Preprocessing { Preprocessing() { std::cin.tie(0); std::ios::sync_with_stdio(0); }; }_Preprocessing; /* define hash */ constexpr unsigned int static_random() { return 1u * __TIME__[0] * __TIME__[1] * __TIME__[3] * __TIME__[4] * __TIME__[6] * __TIME__[7]; } template<class T> struct Hash { auto operator()(T x) const { return std::hash<T>()(x) ^ static_random(); } }; template<> struct Hash<std::pair<int, int>> { auto operator()(const std::pair<int, int>& x) const { return Hash<long long>()(x.first << 31 | x.second); } }; /* input */ template<class T> std::istream& operator >> (std::istream& is, std::vector<T>& vec) { for(T& x : vec) is >> x; return is; } /* constant value */ constexpr ll MOD = 1000000007; // constexpr ll MOD = 998244353; //============================================================================================= class ModCalculator { const long long m_mod; const std::vector<long long> m_fac; const std::vector<long long> m_finv; auto constructFac(long long s) { std::vector<long long> fac(s); fac[0] = fac[1] = 1; for(long long i = 2; i < s; ++i) { fac[i] = fac[i - 1] * i; if(fac[i] > m_mod) { fac[i] %= m_mod; } } return fac; } auto constructInv(long long s) { std::vector<long long> finv(s); finv[s - 1] = this->pow(m_fac[s - 1], m_mod - 2); for(long long i = s - 2; i >= 0; --i) { finv[i] = finv[i + 1] * (i + 1); if(finv[i] > m_mod) { finv[i] %= m_mod; } } return finv; } public: ModCalculator(long long mod, long long size = 3 * 1e6) : m_mod(mod), m_fac(constructFac(size)), m_finv(constructInv(size)) { } static long long pow(long long a, long long b, long long mod) { a %= mod; long long ans = 1; while(b > 0) { if(b & 1) { ans *= a; if(ans >= mod) { ans %= mod; } } b >>= 1; a *= a; if(a >= mod) { a %= mod; } } return ans; } long long pow(long long a, long long b) const { return pow(a, b, m_mod); } auto fact(int n) const { if(n < 0) { return 0LL; } return m_fac[n]; } auto factInv(int n) const { if(n < 0) { return 0LL; } return m_finv[n]; } auto comb(int n, int r) const { auto val = fact(n) * factInv(r); if(val >= m_mod) { val %= m_mod; } val *= factInv(n - r); if(val >= m_mod) { val %= m_mod; } return val; } auto perm(int n, int r) const { auto val = fact(n) * factInv(n - r); if(val >= m_mod) { val %= m_mod; } return val; } auto inv(int n) const { return pow(n, m_mod - 2); } }calc(MOD); auto solve(ll n) { if(n <= 2) { return 0LL; } VL dp(n + 1); dp[0] = 1; dp[1] = 1; dp[2] = 1; FOR(i, 3, n + 1) REP(l, i) if(l & 1) { auto r = i - l - 1; dp[i] += dp[l] * dp[r] % MOD * calc.comb(i - 1, l) % MOD; dp[i] %= MOD; } return (dp[n] << 1) % MOD; } signed main() { ll n; cin >> n; cout << solve(n) << endl; }