結果
問題 | No.1115 二つの数列 / Two Sequences |
ユーザー |
|
提出日時 | 2020-09-29 08:32:08 |
言語 | C++17(clang) (17.0.6 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 61 ms / 2,000 ms |
コード長 | 4,785 bytes |
コンパイル時間 | 6,907 ms |
コンパイル使用メモリ | 163,936 KB |
実行使用メモリ | 7,168 KB |
最終ジャッジ日時 | 2024-07-03 13:03:58 |
合計ジャッジ時間 | 8,225 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 35 |
ソースコード
#include <bits/stdc++.h>template <typename T>class BIT {public:BIT(int n) : v_(n) {}T Sum(int i) const {T ret = 0;while (i >= 0) {ret += v_[i];i = (i & (i + 1)) - 1;}return ret;}T Get(int i) const { return Sum(i) - Sum(i - 1); }void Add(int i, T v) {while (i < v_.size()) {v_[i] += v;i |= i + 1;}}private:std::vector<T> v_;};#include <boost/hana/functional/fix.hpp>template <typename T, typename = void>struct is_iterable : std::false_type {};template <typename T>struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())),decltype(std::end(std::declval<T>()))>>: std::true_type {};template <typename T, typename = void>struct is_pair : std::false_type {};template <typename T>struct is_pair<T, std::void_t<decltype(std::declval<T>().first),decltype(std::declval<T>().second)>>: std::true_type {};template <typename T>void debug(const T& v) {if constexpr (is_pair<T>::value) {std::cerr << "{";debug(v.first);std::cerr << ", ";debug(v.second);std::cerr << "}";} else if constexpr (is_iterable<T>::value &&!std::is_same<T, std::string>::value) {std::cerr << "{";for (auto it = std::begin(v); it != std::end(v); ++it) {if (it != std::begin(v)) std::cerr << ", ";debug(*it);}std::cerr << "}";} else {std::cerr << v;}}template <typename T, typename... Ts>void debug(const T& value, const Ts&... args) {debug(value);std::cerr << ", ";debug(args...);}#if DEBUG#define dbg(...) \do { \cerr << #__VA_ARGS__ << ": "; \debug(__VA_ARGS__); \cerr << " (L" << __LINE__ << ")\n"; \} while (0)#else#define dbg(...)#endifvoid read_from_cin() {}template <typename T, typename... Ts>void read_from_cin(T& value, Ts&... args) {std::cin >> value;read_from_cin(args...);}#define rd(type, ...) \type __VA_ARGS__; \read_from_cin(__VA_ARGS__);#define ints(...) rd(int, __VA_ARGS__);#define strings(...) rd(string, __VA_ARGS__);template <typename T>void write_to_cout(const T& value) {if constexpr (std::is_same<T, bool>::value) {std::cout << (value ? "Yes" : "No");} else {std::cout << value;}}template <typename T, typename... Ts>void write_to_cout(const T& value, const Ts&... args) {write_to_cout(value);std::cout << ' ';write_to_cout(args...);}#define wt(...) \do { \write_to_cout(__VA_ARGS__); \cout << '\n'; \} while (0)#define all(x) (x).begin(), (x).end()#define rep_dispatch(_1, _2, _3, name, ...) name#define rep3(i, a, b) for (int i = (int)(a); i < (int)(b); ++i)#define rep2(i, n) rep3(i, 0, n)#define rep1(n) rep2(_loop_variable_, n)#define rep(...) rep_dispatch(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)#define rrep3(i, a, b) for (int i = (int)(b)-1; i >= a; --i)#define rrep2(i, n) rrep3(i, 0, n)#define rrep1(n) rrep2(_loop_variable_, n)#define rrep(...) rep_dispatch(__VA_ARGS__, rrep3, rrep2, rrep1)(__VA_ARGS__)template <typename T>std::istream& operator>>(std::istream& is, std::vector<T>& v) {for (T& vi : v) is >> vi;return is;}template <typename T, typename U>std::istream& operator>>(std::istream& is, std::pair<T, U>& p) {is >> p.first >> p.second;return is;}template <typename T, typename U>bool chmax(T& a, U b) {if (a < b) {a = b;return true;}return false;}template <typename T, typename U>bool chmin(T& a, U b) {if (a > b) {a = b;return true;}return false;}template <typename T, typename U>T max(T a, U b) {return a > b ? a : b;}template <typename T, typename U>T mix(T a, U b) {return a < b ? a : b;}template <typename T>int sz(const T& v) {return v.size();}template <typename T>int popcount(T i) {return std::bitset<std::numeric_limits<T>::digits>(i).count();}using i64 = std::int64_t;using i32 = std::int32_t;template <typename T>using low_priority_queue =std::priority_queue<T, std::vector<T>, std::greater<T>>;template <typename T>using V = std::vector<T>;template <typename T>using VV = V<V<T>>;void Main();int main() {Main();return 0;}const auto& Fix = boost::hana::fix;using namespace std;#define int i64void Main() {ints(n);V<int> a(n), b(n);cin >> a >> b;V<int> c(n);rep(i, n) c[a[i] - 1] = i;V<int> d(n);rep(i, n) d[i] = c[b[i] - 1];BIT<int> bit(n);int ans = 0;rep(i, n) {ans += bit.Sum(n - 1) - bit.Sum(d[i]);bit.Add(d[i], 1);}wt(ans);}