結果
| 問題 |
No.1142 XOR と XOR
|
| ユーザー |
rokahikou1
|
| 提出日時 | 2020-12-03 18:26:04 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 36 ms / 2,000 ms |
| コード長 | 4,154 bytes |
| コンパイル時間 | 1,892 ms |
| コンパイル使用メモリ | 175,056 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-11-08 03:50:56 |
| 合計ジャッジ時間 | 3,946 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:122:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
122 | auto [N, M, K] = reads<ll, ll, ll>();
| ^
ソースコード
#include <bits/stdc++.h>
#define rep(i, n) for(int(i) = 0; (i) < (n); (i)++)
#define FOR(i, m, n) for(int(i) = (m); (i) < (n); (i)++)
#define ALL(v) (v).begin(), (v).end()
#define LLA(v) (v).rbegin(), (v).rend()
#define PB push_back
#define MP(a, b) make_pair((a), (b))
using namespace std;
template <class T> inline vector<T> make_vec(size_t a, T val) {
return vector<T>(a, val);
}
template <class... Ts> inline auto make_vec(size_t a, Ts... ts) {
return vector<decltype(make_vec(ts...))>(a, make_vec(ts...));
}
template <typename T> inline T read() {
T t;
cin >> t;
return t;
}
template <typename T> inline vector<T> readv(size_t sz) {
vector<T> ret(sz);
rep(i, sz) cin >> ret[i];
return ret;
}
template <typename... Ts> inline tuple<Ts...> reads() {
return {read<Ts>()...};
}
template <typename T> struct edge {
int to;
T cost;
edge(int t, T c) : to(t), cost(c) {}
};
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using Graph = vector<vector<int>>;
template <typename T> using WGraph = vector<vector<edge<T>>>;
const int INF = 1 << 30;
const ll LINF = 1LL << 60;
const int MOD = 1e9 + 7;
template <uint_fast64_t MOD> class ModInt {
using u64 = uint_fast64_t;
public:
u64 val;
ModInt(const u64 x = 0) : val((x + MOD) % MOD) {}
constexpr u64 &value() { return val; }
constexpr ModInt operator-() { return val ? MOD - val : 0; }
constexpr ModInt operator+(const ModInt &rhs) const {
return ModInt(*this) += rhs;
}
constexpr ModInt operator-(const ModInt &rhs) const {
return ModInt(*this) -= rhs;
}
constexpr ModInt operator*(const ModInt &rhs) const {
return ModInt(*this) *= rhs;
}
constexpr ModInt operator/(const ModInt &rhs) const {
return ModInt(*this) /= rhs;
}
constexpr ModInt &operator+=(const ModInt &rhs) {
val += rhs.val;
if(val >= MOD) {
val -= MOD;
}
return *this;
}
constexpr ModInt &operator-=(const ModInt &rhs) {
if(val < rhs.val) {
val += MOD;
}
val -= rhs.val;
return *this;
}
constexpr ModInt &operator*=(const ModInt &rhs) {
val = val * rhs.val % MOD;
return *this;
}
constexpr ModInt &operator/=(const ModInt &rhs) {
*this *= rhs.inv();
return *this;
}
constexpr bool operator==(const ModInt &rhs) {
return this->val == rhs.val;
}
constexpr bool operator!=(const ModInt &rhs) {
return this->val != rhs.val;
}
friend constexpr ostream &operator<<(ostream &os, const ModInt<MOD> &x) {
return os << x.val;
}
friend constexpr istream &operator>>(istream &is, ModInt<MOD> &x) {
return is >> x.val;
}
constexpr ModInt inv() const { return ModInt(*this).pow(MOD - 2); }
constexpr ModInt pow(ll e) const {
u64 x = 1, p = val;
while(e > 0) {
if(e % 2 == 0) {
p = (p * p) % MOD;
e /= 2;
} else {
x = (x * p) % MOD;
e--;
}
}
return ModInt(x);
}
};
using mint = ModInt<MOD>;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
auto [N, M, K] = reads<ll, ll, ll>();
auto A = readv<ll>(N);
auto B = readv<ll>(M);
vector<mint> cumA(1024), cumB(1024);
cumA[0] = cumB[0] = 1;
ll xo = 0;
rep(i, N) {
xo ^= A[i];
cumA[xo] += 1;
}
xo = 0;
rep(i, M) {
xo ^= B[i];
cumB[xo] += 1;
}
vector<mint> allA(1024), allB(1024);
for(int i = 0; i < 1024; i++) {
for(int j = i; j < 1024; j++) {
if(i == j) {
allA[i ^ j] += (cumA[i] * (cumA[j] - 1)) / 2;
allB[i ^ j] += (cumB[i] * (cumB[j] - 1)) / 2;
} else {
allA[i ^ j] += (cumA[i] * cumA[j]);
allB[i ^ j] += (cumB[i] * cumB[j]);
}
}
}
mint res = 0;
for(int i = 0; i < 1024; i++) {
res += allA[i] * allB[K ^ i];
}
cout << res << endl;
}
rokahikou1