結果
問題 | No.1115 二つの数列 / Two Sequences |
ユーザー | stoq |
提出日時 | 2020-08-18 06:12:49 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 42 ms / 2,000 ms |
コード長 | 4,034 bytes |
コンパイル時間 | 2,426 ms |
コンパイル使用メモリ | 206,600 KB |
実行使用メモリ | 6,528 KB |
最終ジャッジ日時 | 2024-10-11 17:18:55 |
合計ジャッジ時間 | 4,304 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 5 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 38 ms
6,272 KB |
testcase_04 | AC | 41 ms
6,400 KB |
testcase_05 | AC | 36 ms
6,272 KB |
testcase_06 | AC | 33 ms
6,272 KB |
testcase_07 | AC | 41 ms
6,400 KB |
testcase_08 | AC | 4 ms
5,248 KB |
testcase_09 | AC | 23 ms
5,248 KB |
testcase_10 | AC | 38 ms
6,400 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 42 ms
6,528 KB |
testcase_13 | AC | 42 ms
6,272 KB |
testcase_14 | AC | 41 ms
6,272 KB |
testcase_15 | AC | 2 ms
5,248 KB |
testcase_16 | AC | 2 ms
5,248 KB |
testcase_17 | AC | 2 ms
5,248 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 2 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 5 ms
5,248 KB |
testcase_24 | AC | 15 ms
5,248 KB |
testcase_25 | AC | 32 ms
6,016 KB |
testcase_26 | AC | 8 ms
5,248 KB |
testcase_27 | AC | 19 ms
5,248 KB |
testcase_28 | AC | 26 ms
5,248 KB |
testcase_29 | AC | 34 ms
6,272 KB |
testcase_30 | AC | 41 ms
6,400 KB |
testcase_31 | AC | 11 ms
5,248 KB |
testcase_32 | AC | 7 ms
5,248 KB |
testcase_33 | AC | 35 ms
6,144 KB |
testcase_34 | AC | 2 ms
5,248 KB |
testcase_35 | AC | 2 ms
5,248 KB |
testcase_36 | AC | 2 ms
5,248 KB |
testcase_37 | AC | 2 ms
5,248 KB |
testcase_38 | AC | 2 ms
5,248 KB |
testcase_39 | AC | 2 ms
5,248 KB |
ソースコード
#define MOD_TYPE 1 #pragma region Macros #include <bits/stdc++.h> using namespace std; /* #include <boost/multiprecision/cpp_int.hpp> #include <boost/multiprecision/cpp_dec_float.hpp> using Int = boost::multiprecision::cpp_int; using lld = boost::multiprecision::cpp_dec_float_100; */ /* #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") */ using ll = long long int; using ld = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; using pld = pair<ld, ld>; template <typename Q_type> using smaller_queue = priority_queue<Q_type, vector<Q_type>, greater<Q_type>>; constexpr ll MOD = (MOD_TYPE == 1 ? (ll)(1e9 + 7) : 998244353); //constexpr ll MOD = 1; constexpr int INF = (int)1e9 + 10; constexpr ll LINF = (ll)4e18; constexpr double PI = acos(-1.0); constexpr double EPS = 1e-11; constexpr int Dx[] = {0, 0, -1, 1, -1, 1, -1, 1, 0}; constexpr int Dy[] = {1, -1, 0, 0, -1, -1, 1, 1, 0}; #define REP(i, m, n) for (ll i = m; i < (ll)(n); ++i) #define rep(i, n) REP(i, 0, n) #define REPI(i, m, n) for (int i = m; i < (int)(n); ++i) #define repi(i, n) REPI(i, 0, n) #define MP make_pair #define MT make_tuple #define YES(n) cout << ((n) ? "YES" : "NO") << "\n" #define Yes(n) cout << ((n) ? "Yes" : "No") << "\n" #define possible(n) cout << ((n) ? "possible" : "impossible") << "\n" #define Possible(n) cout << ((n) ? "Possible" : "Impossible") << "\n" #define Yay(n) cout << ((n) ? "Yay!" : ":(") << "\n" #define all(v) v.begin(), v.end() #define NP(v) next_permutation(all(v)) #define dbg(x) cerr << #x << ":" << x << "\n"; inline void init_main() { cin.tie(0); ios::sync_with_stdio(false); cout << setprecision(30) << setiosflags(ios::fixed); } template <typename T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template <typename T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } inline ll CEIL(ll a, ll b) { return (a + b - 1) / b; } template <typename A, size_t N, typename T> inline void Fill(A (&array)[N], const T &val) { fill((T *)array, (T *)(array + N), val); } template <typename T, typename U> constexpr istream &operator>>(istream &is, pair<T, U> &p) noexcept { is >> p.first >> p.second; return is; } template <typename T, typename U> constexpr ostream &operator<<(ostream &os, pair<T, U> &p) noexcept { os << p.first << " " << p.second; return os; } #pragma endregion template <typename T> class SegmentTree { private: using Fn = function<T(T, T)>; int N; vector<T> dat; T unit; Fn func; public: SegmentTree() {} SegmentTree(int n_, Fn func_, T unit_) : func(func_), unit(unit_) { N = 1; while (N < n_) N *= 2; dat.assign(2 * N - 1, unit); } SegmentTree(const vector<T> &v, Fn func_, T unit_) : func(func_), unit(unit_) { N = 1; int sz = v.size(); while (N < sz) N *= 2; dat.resize(2 * N - 1); for (int i = 0; i < N; ++i) dat[i + N - 1] = (i < sz ? v[i] : unit); for (int i = N - 2; i >= 0; --i) dat[i] = func(dat[i * 2 + 1], dat[i * 2 + 2]); } void update(int k, T a) { k += N - 1; dat[k] = a; while (k > 0) { k = (k - 1) / 2; dat[k] = func(dat[k * 2 + 1], dat[k * 2 + 2]); } } T get(int k) { return dat[k + N - 1]; } T query(int l, int r) { T vl = unit, vr = unit; for (l += (N - 1), r += (N - 1); l < r; l >>= 1, r >>= 1) { if ((l & 1) == 0) vl = func(vl, dat[l]); if ((r & 1) == 0) vr = func(vr, dat[--r]); } return func(vl, vr); } }; void solve() { int n; cin >> n; vector<int> a(n), b(n); vector<int> p(n); rep(i, n) { cin >> a[i]; a[i]--; p[a[i]] = i; } rep(i, n) { cin >> b[i]; b[i]--; b[i] = p[b[i]]; } SegmentTree<ll> sg(n, plus<ll>(), 0LL); ll sum = 0; rep(i, n) { sum += sg.query(b[i] + 1, n); sg.update(b[i], 1); } cout << sum << "\n"; } int main() { init_main(); solve(); }