結果

問題 No.803 Very Limited Xor Subset
ユーザー kcvlex
提出日時 2019-03-18 15:56:42
言語 C++11
(gcc 13.3.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 4,119 bytes
コンパイル時間 1,416 ms
コンパイル使用メモリ 169,496 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-18 10:33:03
合計ジャッジ時間 2,613 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>
using namespace std;
//#define DEBUG_MODE
#define endl '\n'
#ifdef DEBUG_MODE
#define DEBUG(X) debug_func(X, #X)
#define DEBUG_ENDL endl << flush
#define DEBUG_SEPARATOR_LINE cout<<"=================\n"
#else
#define DEBUG(X) 0
#define DEBUG_ENDL 0
#define DEBUG_SEPARATOR_LINE 0
#endif
#define ALL(V) (V).begin(), (V).end()
#define ALLR(V) (V).rbegin(), (V).rend()
#define DEBUG_ENDL_S(S) ((S).size() ? "\n" : "") << flush;
template <typename T> using V = vector<T>;
template <typename T> using VV = V<V<T>>;
template <typename T, typename U> using P = pair<T, U>;
using ll = int64_t;
using PLL = P<ll, ll>;
template <typename T> const T& var_min(const T &t) { return t; }
template <typename T> const T& var_max(const T &t) { return t; }
template <typename Head, typename... Tail> const Head& var_min(const Head &head, const Tail&... tail) { return min(head, var_min(tail...)); }
template <typename Head, typename... Tail> const Head& var_max(const Head &head, const Tail&... tail) { return max(head, var_max(tail...)); }
template <typename T, typename... Tail> void chmin(T &t, const Tail&... tail) { t = var_min(t, tail...); }
template <typename T, typename... Tail> void chmax(T &t, const Tail&... tail) { t = var_max(t, tail...); }
void debug_func_preffix(const string &s) { if(s.size()) cout << s << " = "; }
template <typename T>
void debug_func(const T &t, const string &s = "") {
debug_func_preffix(s);
cout << t << DEBUG_ENDL_S(s);
}
template <typename T, typename U>
void debug_func(const P<T, U> &p, const string &s = "") {
debug_func_preffix(s);
cout << "(";
debug_func(p.first);
cout << ", ";
debug_func(p.second);
cout << ")" << DEBUG_ENDL_S(s);
}
template <typename T>
void debug_func(const V<T> &v, const string &s = "") {
for(ll i = 0; i < v.size(); i++) {
string t = s + "[" + to_string(i) + "]";
debug_func(v[i], t);
}
}
void init_io() {
cin.tie(0);
ios_base::sync_with_stdio(false);
cout << fixed << setprecision(30);
}
using BS = bitset<512>;
using Matrix = V<BS>;
const ll MOD = 1e9 + 7;
tuple<Matrix, BS, ll> gauss_elim(Matrix mat, BS b, ll dim) {
ll fcnt = 0;
ll upper_row = 0;
for(ll col = 0; col < dim; col++) {
ll row = -1;
for(ll r = upper_row; r < mat.size(); r++) {
if(mat[r].test(col)) {
row = r;
break;
}
}
if(row == -1) {
fcnt++;
continue;
}
swap(mat[upper_row], mat[row]);
bool tmp = b[upper_row];
b.set(upper_row, b[row]);
b.set(row, tmp);
for(ll r = 0; r < mat.size(); r++) {
if(r == upper_row) continue;
if(!mat[r].test(col)) continue;
mat[r] ^= mat[upper_row];
bool tmp = b[r] ^ b[upper_row];
b.set(r, tmp);
}
upper_row++;
}
return make_tuple(mat, b, fcnt);
}
ll calc(Matrix mat, BS b, ll dim) {
auto tmp = gauss_elim(mat, b, dim);
Matrix gmat;
BS gb;
ll fcnt;
tie(gmat, gb, fcnt) = tmp;
DEBUG(dim);
DEBUG(fcnt);
#ifdef DEBUG_MODE
for(ll i = 0; i < gmat.size(); i++) cout << gmat[i].to_string() << " = " << (gb[i] ? 1 : 0) << endl;
#endif
for(ll i = 0; i < gmat.size(); i++) if(!gmat[i].any() && gb.test(i)) return 0;
ll ret = 1;
for(ll i = 0; i < fcnt; i++) (ret *= 2) %= MOD;
return ret;
}
int main() {
init_io();
ll N, M, X;
cin >> N >> M >> X;
BS b(X);
Matrix mat(60 + M, BS(0));
ll dim = N;
for(ll i = 0; i < N; i++) {
ll A;
cin >> A;
BS ab(A);
for(ll dig = 0; dig < 60; dig++) mat[dig][i] = ab.test(dig);
}
for(ll i = 0; i < M; i++) {
ll type, l, r;
cin >> type >> l >> r;
l--;
r--;
for(ll j = l; j <= r; j++) mat[i + 60].set(j);
b.set(i + 60, !!(type));
}
#if 0
#ifdef DEBUG_MODE
for(ll i = 0; i < mat.size(); i++) cout << mat[i].to_string() << " = " << (b[i] ? 1 : 0) << endl;
#endif
#endif
cout << calc(mat, b, dim) << endl;
return 0;
}
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