結果
| 問題 | No.803 Very Limited Xor Subset |
| コンテスト | |
| ユーザー |
rniya
|
| 提出日時 | 2021-10-17 17:10:52 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 2,000 ms |
| コード長 | 11,402 bytes |
| コンパイル時間 | 2,297 ms |
| コンパイル使用メモリ | 201,344 KB |
| 最終ジャッジ日時 | 2025-01-25 01:44:47 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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
#define LOCAL
#include <bits/stdc++.h>
using namespace std;
#pragma region Macros
typedef long long ll;
typedef __int128_t i128;
typedef unsigned int uint;
typedef unsigned long long ull;
#define ALL(x) (x).begin(), (x).end()
template <typename T> istream& operator>>(istream& is, vector<T>& v) {
for (T& x : v) is >> x;
return is;
}
template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
for (int i = 0; i < (int)v.size(); i++) {
os << v[i] << (i + 1 == (int)v.size() ? "" : " ");
}
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p) {
os << '(' << p.first << ',' << p.second << ')';
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& m) {
os << '{';
for (auto itr = m.begin(); itr != m.end();) {
os << '(' << itr->first << ',' << itr->second << ')';
if (++itr != m.end()) os << ',';
}
os << '}';
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const unordered_map<T, U>& m) {
os << '{';
for (auto itr = m.begin(); itr != m.end();) {
os << '(' << itr->first << ',' << itr->second << ')';
if (++itr != m.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const set<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const multiset<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const deque<T>& v) {
for (int i = 0; i < (int)v.size(); i++) {
os << v[i] << (i + 1 == (int)v.size() ? "" : " ");
}
return os;
}
template <int i, typename T> void print_tuple(ostream&, const T&) {}
template <int i, typename T, typename H, class... Args> void print_tuple(ostream& os, const T& t) {
if (i) os << ',';
os << get<i>(t);
print_tuple<i + 1, T, Args...>(os, t);
}
template <typename... Args> ostream& operator<<(ostream& os, const tuple<Args...>& t) {
os << '{';
print_tuple<0, tuple<Args...>, Args...>(os, t);
return os << '}';
}
void debug_out() { cerr << '\n'; }
template <class Head, class... Tail> void debug_out(Head&& head, Tail&&... tail) {
cerr << head;
if (sizeof...(Tail) > 0) cerr << ", ";
debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) \
cerr << " "; \
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n'; \
cerr << " "; \
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif
template <typename T> T gcd(T x, T y) { return y != 0 ? gcd(y, x % y) : x; }
template <typename T> T lcm(T x, T y) { return x / gcd(x, y) * y; }
int topbit(signed t) { return t == 0 ? -1 : 31 - __builtin_clz(t); }
int topbit(long long t) { return t == 0 ? -1 : 63 - __builtin_clzll(t); }
int botbit(signed a) { return a == 0 ? 32 : __builtin_ctz(a); }
int botbit(long long a) { return a == 0 ? 64 : __builtin_ctzll(a); }
int popcount(signed t) { return __builtin_popcount(t); }
int popcount(long long t) { return __builtin_popcountll(t); }
bool ispow2(int i) { return i && (i & -i) == i; }
template <class T> T ceil(T x, T y) {
assert(y >= 1);
return (x > 0 ? (x + y - 1) / y : x / y);
}
template <class T> T floor(T x, T y) {
assert(y >= 1);
return (x > 0 ? x / y : (x - y + 1) / y);
}
template <class T1, class T2> inline bool chmin(T1& a, T2 b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T1, class T2> inline bool chmax(T1& a, T2 b) {
if (a < b) {
a = b;
return true;
}
return false;
}
#pragma endregion
#include <cassert>
#include <cstdint>
#include <iostream>
template <uint64_t Modulus> class modint {
using i64 = int64_t;
using u32 = uint32_t;
using u64 = uint64_t;
static_assert(Modulus < static_cast<uint32_t>(1) << 31, "Modulus must be less than 2**31");
static constexpr u32 mod = Modulus;
u32 v;
public:
constexpr modint(const i64 x = 0) noexcept : v(x < 0 ? mod - 1 - (-(x + 1) % mod) : x % mod) {}
constexpr u32& val() noexcept { return v; }
constexpr const u32& val() const noexcept { return v; }
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 {
v += rhs.v;
if (v >= mod) v -= mod;
return *this;
}
constexpr modint& operator-=(const modint& rhs) noexcept {
if (v < rhs.v) v += mod;
v -= rhs.v;
return *this;
}
constexpr modint& operator*=(const modint& rhs) noexcept {
v = (u64)v * rhs.v % mod;
return *this;
}
constexpr modint& operator/=(const modint& rhs) noexcept { return *this *= rhs.inv(); }
constexpr modint pow(long long n) const noexcept {
assert(0 <= n);
modint self(*this), res(1);
while (n > 0) {
if (n & 1) res *= self;
self *= self;
n >>= 1;
}
return res;
}
constexpr modint inv() const noexcept {
assert(*this != 0);
return pow(mod - 2);
}
constexpr modint& operator++() noexcept {
if (++v == mod) v = 0;
return *this;
}
constexpr modint& operator--() noexcept {
if (v == 0) v = mod;
return --v, *this;
}
constexpr modint operator++(int) noexcept {
modint t = *this;
return ++*this, t;
}
constexpr modint operator--(int) noexcept {
modint t = *this;
return --*this, t;
}
constexpr modint operator-() const noexcept { return modint(mod - v); }
template <class T> friend constexpr modint operator+(T x, modint y) noexcept { return modint(x) + y; }
template <class T> friend constexpr modint operator-(T x, modint y) noexcept { return modint(x) - y; }
template <class T> friend constexpr modint operator*(T x, modint y) noexcept { return modint(x) * y; }
template <class T> friend constexpr modint operator/(T x, modint y) noexcept { return modint(x) / y; }
constexpr bool operator==(const modint& rhs) const noexcept { return v == rhs.v; }
constexpr bool operator!=(const modint& rhs) const noexcept { return v != rhs.v; }
constexpr bool operator!() const noexcept { return !v; }
friend std::istream& operator>>(std::istream& s, modint& rhs) noexcept {
i64 v;
rhs = modint{(s >> v, v)};
return s;
}
friend std::ostream& operator<<(std::ostream& s, const modint& rhs) noexcept { return s << rhs.v; }
};
/**
* @brief modint
* @docs docs/modulo/modint.md
*/
#include <bitset>
#include <cassert>
#include <vector>
template <size_t MAX_COL> struct BitMatrix {
size_t n, m;
std::vector<std::bitset<MAX_COL>> A;
BitMatrix(size_t n, size_t m) : n(n), m(m), A(n) { assert(m <= MAX_COL); }
size_t size() const { return n; };
size_t height() const { return n; }
size_t width() const { return m; }
inline const std::bitset<MAX_COL>& operator[](int k) const { return A[k]; }
inline std::bitset<MAX_COL>& operator[](int k) { return A[k]; }
static BitMatrix I(size_t n) {
BitMatrix res(n, n);
for (size_t i = 0; i < n; i++) res[i][i] = true;
return res;
}
BitMatrix& operator*=(const BitMatrix& B) {
assert(m == B.height());
BitMatrix C(n, B.width());
for (size_t i = 0; i < n; i++) {
for (size_t j = 0; j < m; j++) {
if (A[i][j]) {
C[i] |= B[j];
}
}
}
std::swap(A, C.A);
return *this;
}
BitMatrix& operator^=(long long k) {
assert(0 <= k);
BitMatrix B = BitMatrix::I(n);
while (k > 0) {
if (k & 1) B *= *this;
*this *= *this;
k >>= 1;
}
std::swap(A, B.A);
return *this;
}
BitMatrix operator*(const BitMatrix& B) const { return BitMatrix(*this) *= B; }
BitMatrix operator^(const long long k) const { return BitMatrix(*this) ^= k; }
size_t gauss_jordan() {
size_t rank = 0;
for (size_t j = 0; j < m; j++) {
int pivot = -1;
for (size_t i = rank; i < n; i++) {
if (A[i][j]) {
pivot = i;
break;
}
}
if (pivot == -1) continue;
std::swap(A[pivot], A[rank]);
for (size_t i = 0; i < n; i++) {
if (i != rank and A[i][j]) {
A[i] ^= A[rank];
}
}
rank++;
}
return rank;
}
std::pair<int, std::bitset<MAX_COL>> system_of_linear_equations(const std::vector<bool>& b) {
assert(m + 1 <= MAX_COL);
BitMatrix B(*this);
for (size_t i = 0; i < n; i++) B[i][m] = b[i];
size_t rank = B.gauss_jordan();
for (size_t i = rank; i < n; i++) {
if (B[i][m]) {
return {-1, std::bitset<MAX_COL>()};
}
}
std::bitset<MAX_COL> res;
for (size_t i = 0; i < rank; i++) res[i] = A[i][m];
return {rank, res};
}
};
const int INF = 1e9;
const long long IINF = 1e18;
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
const char dir[4] = {'D', 'R', 'U', 'L'};
const long long MOD = 1000000007;
// const long long MOD = 998244353;
const int MAX_LOG = 30, MAX_N = 305, MAX = MAX_LOG + MAX_N;
using BM = BitMatrix<MAX_N>;
using mint = modint<1000000007>;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N, M, X;
cin >> N >> M >> X;
BM A(MAX_LOG + MAX_N, N);
vector<bool> b(MAX_LOG + MAX_N);
for (int i = 0; i < MAX_LOG; i++, X >>= 1) b[i] = X & 1;
for (int i = 0; i < N; i++) {
int a;
cin >> a;
for (int j = 0; j < MAX_LOG; j++, a >>= 1) A[j][i] = a & 1;
}
for (int i = 0; i < M; i++) {
int t, l, r;
cin >> t >> l >> r;
for (int j = --l; j < r; j++) A[MAX_LOG + i][j] = 1;
b[MAX_LOG + i] = t;
}
int rank = A.system_of_linear_equations(b).first;
if (rank == -1) {
cout << 0 << '\n';
return 0;
}
mint ans = mint(2).pow(N - rank);
cout << ans << '\n';
return 0;
}
rniya