結果
問題 | No.803 Very Limited Xor Subset |
ユーザー |
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提出日時 | 2019-03-17 22:07:03 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 3,237 bytes |
コンパイル時間 | 1,553 ms |
コンパイル使用メモリ | 173,172 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-07 23:14:49 |
合計ジャッジ時間 | 2,587 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 43 |
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;ModInt() : v(0) {}template<class Z> ModInt(Z x) : v(x >= 0 ? x % P : -x % P ? P - -x % P : 0) {}constexpr ModInt(unsigned v, int) : v(v) {}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) const { return M(*this) *= r; }M operator/(M r) const { return M(*this) /= r; }M operator+(M r) const { return M(*this) += r; }M operator-(M r) const { return M(*this) -= r; }bool operator==(M r) const { return v == r.v; }bool operator!=(M r) const { return !(*this == r); }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) { v = r.v < P - v ? v + r.v : v - (P - r.v); return *this; }M& operator-=(M r) { v = r.v <= v ? v - r.v : v + (P - r.v); 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 {n = n >= 0 ? n % (P - 1) : P - 1 - -n % (P - 1);M res = 1;for (M a = *this; n; a *= a, n >>= 1) if (n & 1) res *= a;return res;}template<class Z> friend M operator*(Z l, M r) { return M(l) *= r; }template<class Z> friend M operator/(Z l, M r) { return M(l) /= r; }template<class Z> friend M operator+(Z l, M r) { return M(l) += r; }template<class Z> friend M operator-(Z l, M r) { return M(l) -= r; }friend ostream& operator<<(ostream& os, M r) { return os << r.v; }friend istream& operator>>(istream& is, M& r) { lint x; is >> x; r = x; return is; }template<class Z> friend bool operator==(Z l, M r) { return M(l) == r; }template<class Z> friend bool operator!=(Z l, M r) { return !(l == r); }};using Mint = ModInt<(unsigned) 1e9 + 7>;int rnk(V< bitset<301> > A) {int n = A.size(), r = 0, m = 301;for (int j = 0; j < m; ++j) {for (int i = r + 1; i < n; ++i) if (A[i][j]) {swap(A[r], A[i]);break;}if (!A[r][j]) continue;for (int i = 0; i < n; ++i) if (i != r and A[i][j]) {A[i] ^= A[r];}if (++r == n) break;}return r;}int main() {cin.tie(nullptr); ios::sync_with_stdio(false);int n, m, x; cin >> n >> m >> x;V< bitset<301> > A(m + 30);for (int i = 0; i < n; ++i) {int a; cin >> a;for (int j = 0; j < 30; ++j) if (a & 1 << j) {A[m + j][i] = true;}}auto B = A;for (int i = 0; i < m; ++i) {int t, l, r; cin >> t >> l >> r, --l;for (int j = l; j < r; ++j) {A[i][j] = B[i][j] = true;}if (t) B[i][n] = true;}for (int j = 0; j < 30; ++j) if (x & 1 << j) {B[m + j][n] = true;}int rA = rnk(A), rB = rnk(B);if (rA != rB) return cout << 0 << '\n', 0;cout << Mint(2).pow(n - rA) << '\n';}