結果

問題 No.803 Very Limited Xor Subset
ユーザー omochana2
提出日時 2019-03-18 07:43:56
言語 C++11
(gcc 13.3.0)
結果
AC  
実行時間 6 ms / 2,000 ms
コード長 2,901 bytes
コンパイル時間 1,328 ms
コンパイル使用メモリ 162,216 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-07-16 03:21:37
合計ジャッジ時間 2,501 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 43
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#define ADD(a, b) a = (a + ll(b)) % mod
#define MUL(a, b) a = (a * ll(b)) % mod
#define MAX(a, b) a = max(a, b)
#define MIN(a, b) a = min(a, b)
#define rep(i, a, b) for(int i = int(a); i < int(b); i++)
#define rer(i, a, b) for(int i = int(a) - 1; i >= int(b); i--)
#define all(a) (a).begin(), (a).end()
#define sz(v) (int)(v).size()
#define pb push_back
#define sec second
#define fst first
#define debug(fmt, ...) Debug(__LINE__, ":", fmt, ##__VA_ARGS__)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<int, pi> ppi;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vl> mat;
typedef complex<double> comp;
void Debug() {cout << '\n'; }
template<class FIRST, class... REST>void Debug(FIRST arg, REST... rest){
cout<<arg<<" ";Debug(rest...);}
template<class T>ostream& operator<<(ostream& out,const vector<T>& v) {
out<<"[";if(!v.empty()){rep(i,0,sz(v)-1)out<<v[i]<<", ";out<<v.back();}out<<"]";return out;}
template<class S, class T>ostream& operator<<(ostream& out,const pair<S, T>& v){
out<<"("<<v.first<<", "<<v.second<<")";return out;}
const int MAX_N = 300010;
const int MAX_V = 100010;
const double eps = 1e-6;
const ll mod = 1000000007;
const int inf = 1 << 30;
const ll linf = 1LL << 60;
const double PI = 3.14159265358979323846;
///////////////////////////////////////////////////////////////////////////////////////////////////
ll mod_pow(ll a, ll n) {
if(n == 0) return 1;
ll res = mod_pow(a, n / 2);
if(n % 2 == 0) return res * res % mod;
else return a * res % mod * res % mod;
}
int B[410][410];
bool used[410];
int N, M, X;
void solve() {
cin >> N >> M >> X;
int S = max(30 + M, N);
rep(i, 0, N) {
int a; cin >> a;
rep(j, 0, 30) {
B[j][i] = ((1 << j) & a) ? 1 : 0;
}
}
rep(j, 0, 30) B[j][S] = ((1 << j) & X) ? 1 : 0;
rep(i, 0, M) {
int e, l, r;
cin >> e >> l >> r; l--;
rep(j, l, r) B[i + 30][j] = 1;
B[i + 30][S] = e;
}
// rep(i, 0, S) debug(vi(B[i], B[i] + S + 1));
rep(i, 0, S) {
int pivot = -1;
rep(j, 0, S) {
if(B[j][i] & !used[j]) pivot = j;
}
if(pivot == -1) continue;
swap(B[i], B[pivot]);
used[i] = true;
rep(j, 0, S) {
if(i != j && B[j][i]) {
rep(k, 0, S + 1) B[j][k] ^= B[i][k];
}
}
}
// rep(i, 0, S) debug(vi(B[i], B[i] + S + 1));
int r = 0;
rep(i, 0, S) {
if(B[i][i] == 1) r++;
else {
if(B[i][S]) r = -inf;
}
}
if(r < 0) cout << 0 << "\n";
else cout << mod_pow(2, N - r) << "\n";
}
int main() {
#ifndef LOCAL
ios::sync_with_stdio(false);
cin.tie(0);
#endif
cout << fixed;
cout.precision(20);
srand((unsigned int)time(NULL));
#ifdef LOCAL
//freopen("in.txt", "wt", stdout); //for tester
freopen("in.txt", "rt", stdin);
#endif
solve();
#ifdef LOCAL
cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
return 0;
}
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