結果
問題 | No.803 Very Limited Xor Subset |
ユーザー |
![]() |
提出日時 | 2019-03-23 12:40:04 |
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 | 4,195 bytes |
コンパイル時間 | 1,887 ms |
コンパイル使用メモリ | 176,048 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-22 04:53:43 |
合計ジャッジ時間 | 3,162 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
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>#define rep(i,a,b) for(int i=a;i<b;i++)#define rrep(i,a,b) for(int i=a;i>=b;i--)#define fore(i,a) for(auto &i:a)#define all(x) (x).begin(),(x).end()//#pragma GCC optimize ("-O3")using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }//---------------------------------------------------------------------------------------------------template<int MOD> struct ModInt {static const int Mod = MOD; unsigned x; ModInt() : x(0) { }ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }int get() const { return (int)x; }ModInt &operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; }ModInt &operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; }ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; }ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }ModInt operator+(ModInt that) const { return ModInt(*this) += that; }ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0;while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); }return ModInt(u); }bool operator==(ModInt that) const { return x == that.x; }bool operator!=(ModInt that) const { return x != that.x; }ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; }};template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; };template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) {ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; }typedef ModInt<1000000007> mint;#define BS 303pair<int, vector<bitset<BS>>> gaussianEliminationXor(vector<bitset<BS>> x) {int rank = 0;rep(i, 0, BS) {int m = -1;for (int j = rank; j < x.size(); j++) {if (x[j][i]) {m = j;break;}}if (m == -1) continue;swap(x[rank], x[m]);for (int j = 0; j < x.size(); j++) {if (rank != j && x[j][i]) {x[j] ^= x[rank];}}rank++;}return { rank, x };}/*---------------------------------------------------------------------------------------------------∧_∧∧_∧ (´<_` ) Welcome to My Coding Space!( ´_ゝ`) / ⌒i/ \ | |/ / ̄ ̄ ̄ ̄/ |__(__ニつ/ _/ .| .|____\/____/ (u ⊃---------------------------------------------------------------------------------------------------*/int N, M, X, A[303];//---------------------------------------------------------------------------------------------------void _main() {cin >> N >> M >> X;rep(i, 0, N) cin >> A[i];vector<bitset<BS>> v;rep(d, 0, 30) {bitset<BS> b;rep(i, 0, N) if (A[i] & (1 << d)) b.set(i);if (X & (1 << d)) b.set(N);v.push_back(b);}rep(m, 0, M) {int t, l, r; cin >> t >> l >> r;l--;bitset<BS> b;rep(i, l, r) b.set(i);if (t == 1) b.set(N);v.push_back(b);}auto p = gaussianEliminationXor(v);fore(b, p.second) if (b.count() == 1 and b[N]) {cout << 0 << endl;return;}mint ans = mint(2) ^ (N - p.first);cout << ans << endl;}