結果
問題 | No.1001 注文の多い順列 |
ユーザー | kroton |
提出日時 | 2020-03-02 16:30:17 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,247 ms / 2,000 ms |
コード長 | 4,109 bytes |
コンパイル時間 | 1,058 ms |
コンパイル使用メモリ | 101,140 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-13 21:14:25 |
合計ジャッジ時間 | 13,281 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 3 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 1 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 1 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 3 ms
5,248 KB |
testcase_14 | AC | 5 ms
5,248 KB |
testcase_15 | AC | 8 ms
5,248 KB |
testcase_16 | AC | 4 ms
5,248 KB |
testcase_17 | AC | 5 ms
5,248 KB |
testcase_18 | AC | 514 ms
5,248 KB |
testcase_19 | AC | 482 ms
5,248 KB |
testcase_20 | AC | 299 ms
5,248 KB |
testcase_21 | AC | 277 ms
5,248 KB |
testcase_22 | AC | 650 ms
5,248 KB |
testcase_23 | AC | 629 ms
5,248 KB |
testcase_24 | AC | 634 ms
5,248 KB |
testcase_25 | AC | 606 ms
5,248 KB |
testcase_26 | AC | 1,192 ms
5,248 KB |
testcase_27 | AC | 1,140 ms
5,248 KB |
testcase_28 | AC | 1,073 ms
5,248 KB |
testcase_29 | AC | 864 ms
5,248 KB |
testcase_30 | AC | 829 ms
5,248 KB |
testcase_31 | AC | 898 ms
5,248 KB |
testcase_32 | AC | 34 ms
5,248 KB |
testcase_33 | AC | 1,247 ms
5,248 KB |
ソースコード
#include <algorithm> #include <bitset> #include <cassert> #include <cctype> #include <cmath> #include <cstdint> #include <cstdio> #include <cstring> #include <deque> #include <fstream> #include <functional> #include <iostream> #include <limits> #include <map> #include <numeric> #include <queue> #include <set> #include <vector> using namespace std; using ll = long long; #define fst first #define snd second /* clang-format off */ template <class T, size_t D> struct _vec { using type = vector<typename _vec<T, D - 1>::type>; }; template <class T> struct _vec<T, 0> { using type = T; }; template <class T, size_t D> using vec = typename _vec<T, D>::type; template <class T> vector<T> make_v(size_t size, const T& init) { return vector<T>(size, init); } template <class... Ts> auto make_v(size_t size, Ts... rest) { return vector<decltype(make_v(rest...))>(size, make_v(rest...)); } template <class T> inline void chmin(T &a, const T& b) { if (b < a) a = b; } template <class T> inline void chmax(T &a, const T& b) { if (b > a) a = b; } /* clang-format on */ template <class T> vector<T> sumup(const vector<T>& a) { int N = a.size(); vector<T> res(N + 1); for (int i = 0; i < N; i++) res[i + 1] = res[i] + a[i]; return res; } template <std::uint_fast64_t Modulus> class modint { using u64 = std::uint_fast64_t; public: u64 a; constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) { } constexpr u64 &value() noexcept { return a; } constexpr const u64 &value() const noexcept { return a; } 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 { a += rhs.a; if (a >= Modulus) { a -= Modulus; } return *this; } constexpr modint &operator-=(const modint rhs) noexcept { if (a < rhs.a) { a += Modulus; } a -= rhs.a; return *this; } constexpr modint &operator*=(const modint rhs) noexcept { a = a * rhs.a % Modulus; return *this; } constexpr modint &operator/=(const modint rhs) noexcept { return *this *= ~rhs; } constexpr modint power(u64 exp) const noexcept { modint v = 1, x = *this; while (exp) { if (exp & 1) { v *= x; } x *= x; exp >>= 1; } return v; } constexpr modint operator~() const noexcept { return power(Modulus - 2); } }; using mint = modint<1000000007>; vector<mint> fact, factInv; void initFact(int N) { fact.resize(N + 1); factInv.resize(N + 1); fact[0] = 1; for (int i = 1; i <= N; i++) fact[i] = fact[i - 1] * i; factInv[N] = ~fact[N]; for (int i = N - 1; i >= 0; i--) factInv[i] = factInv[i + 1] * (i + 1); } int main() { #ifdef DEBUG ifstream ifs("in.txt"); cin.rdbuf(ifs.rdbuf()); #endif int N; while (cin >> N) { initFact(4000); vector<int> X(N, 0), Y(N, 0); int xs = 0, ys = 0; for (int i = 0; i < N; i++) { int t, x; cin >> t >> x; --x; if (t == 0) { ++X[x]; ++xs; } else { ++Y[x]; ++ys; } } auto sumX = sumup(X), sumY = sumup(Y); vector<mint> dp(N + 1, 0); dp[0] = 1; for (int p = 0; p < N; p++) { vector<mint> ndp(N + 1, 0); for (int y = 0; y <= p; y++) { for (int add = 0; add < 2; add++) { int ny = y + add; mint way = 1; if (add) { way *= max(0, sumY[p + 1] - y); } if (p + 1 - ny - sumX[p + 1] >= 0) { way *= fact[p + 1 - ny - sumX[p]]; way /= fact[p + 1 - ny - sumX[p + 1]]; } else { way = 0; } ndp[ny] += dp[y] * way; } } dp.swap(ndp); } cout << dp[ys].value() << endl; } return 0; }