結果
| 問題 |
No.1788 Same Set
|
| コンテスト | |
| ユーザー |
ei1333333
|
| 提出日時 | 2021-12-17 01:35:06 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 4,412 bytes |
| コンパイル時間 | 2,707 ms |
| コンパイル使用メモリ | 228,948 KB |
| 最終ジャッジ日時 | 2025-01-27 01:29:38 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 20 WA * 1 TLE * 15 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
using int64 = long long;
const int mod = 1e9 + 7;
// const int mod = 998244353;
const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;
struct IoSetup {
IoSetup() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
}
} iosetup;
template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {
os << p.first << " " << p.second;
return os;
}
template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
is >> p.first >> p.second;
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 != v.size() ? " " : "");
}
return os;
}
template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
for(T &in: v) is >> in;
return is;
}
template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
template< typename T = int64 >
vector< T > make_v(size_t a) {
return vector< T >(a);
}
template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}
template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
t = v;
}
template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
for(auto &e: t) fill_v(e, v);
}
template< typename F >
struct FixPoint : F {
FixPoint(F &&f) : F(forward< F >(f)) {}
template< typename... Args >
decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, forward< Args >(args)...);
}
};
template< typename F >
inline decltype(auto) MFP(F &&f) {
return FixPoint< F >{forward< F >(f)};
}
/**
* @brief Xor-Shift
* @docs docs/xor-shift.md
*/
struct XorShift {
private:
constexpr static double R = 1.0 / 0xffffffff;
uint64_t x;
public:
explicit XorShift(uint64_t seed = 88172645463325252ull) : x(seed) {}
template< typename T = uint64_t >
inline T get() { // [0, 2^64)
x ^= x << 7ull;
x ^= x >> 9ull;
return x;
}
inline uint32_t get(uint32_t r) { // [0, r)
return ((uint64_t) get< uint32_t >() * r) >> 32ull;
}
inline uint32_t get(uint32_t l, uint32_t r) { // [l, r)
return l + get(r - l);
}
inline double probability() { // [0.0, 1.0]
return get< uint32_t >() * R;
}
};
const int MAX_V = 4e5;
const int BACKET = 150;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef cc_hash_table< int, int, hash< int>> ht;
int main() {
int N;
cin >> N;
vector< int > A(N), B(N);
cin >> A >> B;
for(auto &a: A) --a;
for(auto &a: B) --a;
XorShift rng;
vector< int > P(MAX_V);
for(auto &p: P) p = rng.get< int >();
vector< int > last_a(MAX_V, -1), last_b(MAX_V, -1);
vector< int > sum(N);
int ret = N;
int64 all = 0;
vector< ht > st((N + BACKET - 1) / BACKET);
for(int j = 0; j < st.size(); j++) {
int l = j * BACKET;
int r = min(N, l + BACKET);
st[j][0] = r - l;
}
vector< int > lazy((N + BACKET - 1) / BACKET);
for(int i = 0; i < N; i++) {
auto get = [&](const ht &mp, int x) -> int {
auto it = mp.find(x);
return it == end(mp) ? 0 : it->second;
};
auto fix = [&](int a, int b, int p) {
for(int j = 0; j < st.size(); j++) {
int l = j * BACKET;
int r = min(N, l + BACKET);
if(a >= r or b <= l) {
} else if(a <= l and r <= b) {
ret -= get(st[j], lazy[j]);
lazy[j] ^= p;
ret += get(st[j], lazy[j]);
} else {
ret -= get(st[j], lazy[j]);
for(int k = max(l, a); k < min(r, b); k++) {
if(--st[j][sum[k]] == 0) {
st[j].erase(sum[k]);
}
sum[k] ^= p;
st[j][sum[k]]++;
}
ret += get(st[j], lazy[j]);
}
}
};
fix(last_a[A[i]] + 1, i + 1, P[A[i]]);
fix(last_b[B[i]] + 1, i + 1, P[B[i]]);
last_a[A[i]] = i;
last_b[B[i]] = i;
all += ret - (N - i - 1);
}
cout << all << "\n";
}
ei1333333