結果
問題 | No.1031 いたずら好きなお姉ちゃん |
ユーザー | satanic |
提出日時 | 2020-04-17 23:06:14 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 286 ms / 3,500 ms |
コード長 | 12,508 bytes |
コンパイル時間 | 1,601 ms |
コンパイル使用メモリ | 137,512 KB |
実行使用メモリ | 31,764 KB |
最終ジャッジ日時 | 2024-10-03 15:01:04 |
合計ジャッジ時間 | 13,306 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 53 |
ソースコード
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MACRO_OUT(__VA_ARGS__); #define FOUT(n, dist) std::cout<<std::fixed<<std::setprecision(n)<<(dist); #define SOUT(n, c, dist) std::cout<<std::setw(n)<<std::setfill(c)<<(dist); #define EOUT(...) { OUT(__VA_ARGS__)BR; exit(0); } #define SP std::cout<<" "; #define TAB std::cout<<"\t"; #define BR std::cout<<"\n"; #define SPBR(w, n) std::cout<<(w + 1 == n ? '\n' : ' '); #define ENDL std::cout<<std::endl; #define FLUSH std::cout<<std::flush; #define SHOW(dist) {std::cerr << #dist << "\t: " << (dist) << "\n";} #define SHOWVECTOR(v) {std::cerr << #v << "\t: ";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";} #define SHOWVECTOR2(v) {std::cerr << #v << "\t:\n";for(const auto& xxx : v){for(const auto& yyy : xxx){std::cerr << yyy << " ";}std::cerr << "\n";}} #define SHOWQUEUE(a) {auto tmp(a);std::cerr << #a << "\t: ";while(!tmp.empty()){std::cerr << tmp.front() << " ";tmp.pop();}std::cerr << "\n";} #define SHOWSTACK(a) {auto tmp(a);std::cerr << #a << "\t: ";while(!tmp.empty()){std::cerr << tmp.top() << " ";tmp.pop();}std::cerr << "\n";} // utility #define ALL(a) (a).begin(),(a).end() #define FOR(w, a, n) for(int w=(a);w<(n);++w) #define REP(w, n) FOR(w, 0, n) #define RFOR(w, a, n) for(int w=(n)-1;w>=(a);--w) #define RREP(w, n) RFOR(w, 0, n) template<class S, class T, class U> bool IN(S a, T x, U b) { return a <= x && x < b; } //#define IN(a, x, b) (a<=x && x<b) template<class T> inline T CHMAX(T& a, const T b) { return a = (a < b) ? b : a; } template<class T> inline T CHMIN(T& a, const T b) { return a = (a > b) ? b : a; } // test template<class T> using V = std::vector<T>; template<class T> using VV = V<V<T>>; template<typename S, typename T> std::ostream& operator<<(std::ostream& os, std::pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; } // type/const using i64 = std::int_fast64_t; using ll = long long; using ull = unsigned long long; using ld = long double; using PAIR = std::pair<i64, i64>; using PAIRLL = std::pair<ll, ll>; constexpr i64 INFINT = (1 << 30) - 1; // 1.07x10^ 9 constexpr i64 INFINT_LIM = (1LL << 31) - 1; // 2.15x10^ 9 constexpr ll INFLL = 1LL << 60; // 1.15x10^18 constexpr ll INFLL_LIM = (1LL << 62) - 1 + (1LL << 62); // 9.22x10^18 constexpr double eps = 1e-6; constexpr i64 MOD = 1000000007; constexpr double PI = 3.141592653589793238462643383279; template<class T, size_t N> void FILL(T(&a)[N], const T & val) { for (auto& x : a) x = val; } template<class ARY, size_t N, size_t M, class T> void FILL(ARY(&a)[N][M], const T & val) { for (auto& b : a) FILL(b, val); } template<class T> void FILL(std::vector<T> & a, const T & val) { for (auto& x : a) x = val; } template<class ARY, class T> void FILL(std::vector<std::vector<ARY>> & a, const T & val) { for (auto& b : a) FILL(b, val); } // ------------>8--------- // USE i64 ! // ------------>8------------ SegmentTree ------------>8------------ namespace Monoid { template <class T> class sum { public: using value_type = T; inline static T operation(const T& a, const T& b) { return a + b; } inline static T identity() { return T(0); } }; template <class T> class max { public: using value_type = T; inline static T operation(const T& a, const T& b) { return (a < b) ? b : a; } inline static T identity() { return std::numeric_limits<T>::lowest(); } }; template <class T> class min { public: using value_type = T; inline static T operation(const T& a, const T& b) { return (a < b) ? a : b; } inline static T identity() { return std::numeric_limits<T>::max(); } }; class MONOID { public: struct S { int x; }; using value_type = S; inline static S operation(const S& l, const S& r) { return S{ l.x + r.x }; } inline static S identity() { return S{ 0 }; } }; } template <class Monoid> class SegmentTree { private: using T = typename Monoid::value_type; int ARY_SIZE; std::vector<T> ary; void init(int n) { while (ARY_SIZE < n) ARY_SIZE <<= 1; ary.resize(ARY_SIZE << 1, Monoid::identity()); } public: SegmentTree(int n) : ARY_SIZE(1) { init(n); } SegmentTree(std::vector<T>& a) : ARY_SIZE(1) { init(a.size()); std::copy(a.begin(), a.end(), ary.begin() + ARY_SIZE); for (int i = ARY_SIZE - 1; i >= 1; --i) { ary[i] = Monoid::operation(ary[i << 1], ary[(i << 1) + 1]); } } // -- a[i] = val; inline void update(int i, T val) { i += ARY_SIZE; ary[i] = val; while (i > 1) { i >>= 1; ary[i] = Monoid::operation(ary[i << 1], ary[(i << 1) + 1]); } } // -- a[i] += val; inline void add(int i, T val) { update(i, ary[i + ARY_SIZE] + val); } // -- [l, r) inline T query(int l, int r) { if (l >= r) return Monoid::identity(); T vl = Monoid::identity(), vr = Monoid::identity(); for (l += ARY_SIZE, r += ARY_SIZE; l != r; l >>= 1, r >>= 1) { if (l & 1) vl = Monoid::operation(vl, ary[l++]); if (r & 1) vr = Monoid::operation(ary[--r], vr); } return Monoid::operation(vl, vr); } T operator[](int i) { return ary[i + ARY_SIZE]; } void debugShow() { for (int i = ARY_SIZE; i < ARY_SIZE << 1; ++i) std::cerr << ary[i] << " "; std::cerr << "\n"; } }; // ------------8<------------ SegmentTree ------------8<------------ signed main() { INIT; VAR(int, n); VEC(int, p, n); V<PAIR> p2(n); REP(i, n) p2[i] = { p[i], i }; SegmentTree<Monoid::max<PAIR>> st(p2); SegmentTree<Monoid::min<int>> st2(p); const int LOG = 17; VV<int> neL(LOG, V<int>(n, -1)), neR(LOG, V<int>(n, INFINT)); REP(i, n) { if (i > 0) { if (st2.query(0, i) <= p[i]) { int l = 0, r = i; while (r - l > 1) { int me = (l + r) / 2; if (st2.query(me, i) < p[i]) l = me; else r = me; } neL[0][i] = l; } } if (i + 1 < n) { if (st2.query(i + 1, n) <= p[i]) { int l = i + 1, r = n; while (r - l > 1) { int me = (l + r) / 2; if (st2.query(i + 1, me) < p[i]) r = me; else l = me; } neR[0][i] = r - 1; } } } FOR(k, 1, LOG) REP(i, n) { if (neL[k - 1][i] == -1) neL[k][i] = -1; else neL[k][i] = neL[k - 1][neL[k - 1][i]]; } FOR(k, 1, LOG) REP(i, n) { if (neR[k - 1][i] == INFINT) neR[k][i] = INFINT; else neR[k][i] = neR[k - 1][neR[k - 1][i]]; } i64 ans = 0; auto rec = [&](auto && f, int l, int r) -> void { // [l, r) if (l >= r) return; PAIR ma = st.query(l, r); { int now = ma.second; RREP(i, LOG) { if (neL[i][now] < l) continue; now = neL[i][now]; ans += 1 << i; } } { int now = ma.second; RREP(i, LOG) { if (neR[i][now] >= r) continue; now = neR[i][now]; ans += 1 << i; } } f(f, l, ma.second); f(f, ma.second + 1, r); }; rec(rec, 0, n); OUT(ans)BR; return 0; }