結果
問題 | No.907 Continuous Kadomatu |
ユーザー | risujiroh |
提出日時 | 2019-10-11 22:35:19 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,783 bytes |
コンパイル時間 | 1,779 ms |
コンパイル使用メモリ | 183,964 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-05-04 02:20:39 |
合計ジャッジ時間 | 2,655 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | WA | - |
testcase_01 | WA | - |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 1 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | WA | - |
testcase_29 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using lint = long long; template<class T = int> using V = vector<T>; template<class T = int> using VV = V< V<T> >; template<unsigned P> struct ModInt { using M = ModInt; unsigned v; constexpr ModInt() : v(0) {} constexpr ModInt(unsigned _v, int) : v(_v) {} template<class Z> ModInt(const Z& a) : v((a < 0 ? P - -a % P : a) % P) {} static constexpr unsigned p() { return P; } M operator+() const { return *this; } M operator-() const { return {v ? P - v : 0, 0}; } explicit operator bool() const noexcept { return v; } bool operator!() const noexcept { return !(bool)*this; } M& operator*=(M r) { v = (uint64_t)v * r.v % P; return *this; } M& operator/=(M r) { return *this *= r.inv(); } M& operator+=(M r) { if ((v += r.v) >= P) v -= P; return *this; } M& operator-=(M r) { if ((v += P - r.v) >= P) v -= P; return *this; } M inv() const { int a = v, b = P, x = 1, u = 0; while (b) { int q = a / b; swap(a -= q * b, b); swap(x -= q * u, u); } assert(a == 1); return x; } template<class Z> M pow(Z n) const { if (n < 0) return pow(-n).inv(); M res = 1; for (M a = *this; n; a *= a, n >>= 1) if (n & 1) res *= a; return res; } friend M operator*(M l, M r) { return M(l) *= r; } friend M operator/(M l, M r) { return M(l) /= r; } friend M operator+(M l, M r) { return M(l) += r; } friend M operator-(M l, M r) { return M(l) -= r; } friend ostream& operator<<(ostream& os, M r) { return os << r.v; } friend bool operator==(M l, M r) { return l.v == r.v; } friend bool operator!=(M l, M r) { return !(l == r); } }; using Mint = ModInt<(unsigned)1e9 + 7>; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n; cin >> n; V<> a(n), b(n); for (int i = 0; i < n; ++i) cin >> a[i] >> b[i]; if (n & 1) { ++n; a.push_back(1e9 + 7); b.push_back(1e9 + 8); } auto len = [](int l0, int r0, int l1, int r1) -> Mint { return max(min(r0, r1) - max(l0, l1), 0); }; Mint res = 1; V<Mint> pr(n); for (int i = 0; i < n; i += 2) { V<> v{a[i], b[i], a[i + 1], b[i + 1]}; sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); int m = v.size() - 1; V<Mint> p(m), q(m); for (int j = 0; j < m; ++j) { p[j] = len(a[i], b[i], v[j], v[j + 1]) / (b[i] - a[i]); q[j] = len(a[i + 1], b[i + 1], v[j], v[j + 1]) / (b[i + 1] - a[i + 1]); } Mint crr; for (int k = 0; k < m; ++k) for (int j = 0; j <= k; ++j) { if (j < k) { crr += p[j] * q[k]; } else { crr += p[j] * q[k] / 2; } } pr[i] = crr; res *= crr; } V<Mint> c(8); c[0] = 1; c[1] = Mint(2).inv(); c[2] = Mint(2).inv(); c[3] = Mint(3).inv(); c[4] = Mint(2).inv(); c[5] = Mint(4).inv(); c[6] = Mint(3).inv(); c[7] = Mint(5) / 24; for (int i = 0; i < n - 2; i += 2) { V<> v; for (int di = 0; di < 4; ++di) { v.push_back(a[i + di]); v.push_back(b[i + di]); } sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); int m = v.size() - 1; VV<Mint> p(4, V<Mint>(m)); for (int di = 0; di < 4; ++di) for (int j = 0; j < m; ++j) { p[di][j] = len(a[i + di], b[i + di], v[j], v[j + 1]) / (b[i + di] - a[i + di]); } Mint crr; for (int j0 = 0; j0 < m; ++j0) for (int j1 = 0; j1 < m; ++j1) for (int j2 = 0; j2 < m; ++j2) for (int j3 = 0; j3 < m; ++j3) { if (j0 > j1) continue; if (j1 < j2) continue; if (j2 > j3) continue; Mint tmp = p[0][j0] * p[1][j1] * p[2][j2] * p[3][j3]; tmp *= c[4 * (j0 == j1) + 2 * (j1 == j2) + (j2 == j3)]; crr += tmp; } if (crr) { res *= crr / (pr[i] * pr[i + 2]); } } cout << res << '\n'; }