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#pragma once #include "template.cpp" class BIT { public: const int n; private: vector<ll> data; public: BIT(int n_ = 0) : n(n_), data(n_ + 1) {} template <typename Iter> BIT(Iter first, Iter last) : n(distance(first, last)) { data = vector<ll>(n + 1); copy(first, last, data.begin() + 1); auto zeroix = data.begin() + 1; rep(i, n) { int j = i | (i+1); if (j < n) zeroix[j] += zeroix[i]; } } void add(int p, ll v = 1) { p++; while (p <= n) { data[p] += v; p += p & -p; } } // sum over [0, p) ll sum(int p) { ll res = 0; while (p) { res += data[p]; p -= p & -p; } return res; } // sum over [l, r) ll sum(int l, int r) { return sum(r) - sum(l); } void clear() { fill(all(data), 0); } void assign(int p, ll v) { add(p, v - sum(p, p + 1)); } bool chmax(int p, ll v) { if (sum(p, p + 1) < v) { assign(p, v); return true; } else return false; } // min i s.t. sum over [0, i) >= v -- or n+1 if failed // requires data[i] >= 0 for any i int lower_bound(ll v) { if (v <= 0) return 0; int l = 0; for (int k = 1 << (32 - __builtin_clz(n) - 1); k; k >>= 1) if (l + k <= n and data[l + k] < v) v -= data[l += k]; return l + 1; } // min i s.t. sum over [0, i) > v -- or n+1 if failed // requires data[i] >= 0 for any i int upper_bound(ll v) { return lower_bound(v + 1); } };
#line 2 "data-structure/bit.cpp" #line 2 "template.cpp" #ifndef LOCAL #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #pragma GCC target("avx") #endif #include <algorithm> #include <bitset> #include <cassert> #include <cmath> #include <functional> #include <iostream> #include <map> #include <numeric> #include <queue> #include <set> #include <stack> using namespace std; using ll = long long; using ull = unsigned long long; using VI = vector<int>; using VVI = vector<vector<int>>; using VLL = vector<ll>; using VVLL = vector<vector<ll>>; using VB = vector<bool>; using PII = pair<int, int>; using PLL = pair<ll, ll>; constexpr int INF = 1000000007; constexpr ll INF_LL = 1'000'000'000'000'000'007; #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define newl '\n' // loops rep(until) / rep(var, until) / rep(var, from, until) / repr (reversed order) #define OVERLOAD3(_1, _2, _3, name, ...) name #define rep(...) OVERLOAD3(__VA_ARGS__, REPEAT_FROM_UNTIL, REPEAT_UNTIL, REPEAT)(__VA_ARGS__) #define REPEAT(times) REPEAT_CNT(_repeat, __COUNTER__, times) #define REPEAT_CNT(_repeat, cnt, times) REPEAT_CNT_CAT(_repeat, cnt, times) #define REPEAT_CNT_CAT(_repeat, cnt, times) REPEAT_FROM_UNTIL(_repeat ## cnt, 0, times) #define REPEAT_UNTIL(name, times) REPEAT_FROM_UNTIL(name, 0, times) #define REPEAT_FROM_UNTIL(name, from, until) for (int name = from, name ## __until = (until); name < name ## __until; name++) #define repr(...) OVERLOAD3(__VA_ARGS__, REPR_FROM_UNTIL, REPR_UNTIL, REPEAT)(__VA_ARGS__) #define REPR_UNTIL(name, times) REPR_FROM_UNTIL(name, 0, times) #define REPR_FROM_UNTIL(name, from, until) for (int name = (until)-1, name ## __from = (from); name >= name ## __from; name--) template <typename T, typename U> bool chmin(T& var, U x) { if (var > x) { var = x; return true; } else return false; } template <typename T, typename U> bool chmax(T& var, U x) { if (var < x) { var = x; return true; } else return false; } ll power(ll e, ll t, ll mod = INF_LL) { ll res = 1; for (; t; t >>= 1, (e *= e) %= mod) if (t & 1) (res *= e) %= mod; return res; } ll choose(ll n, int r) { chmin(r, n-r); if (r < 0) return 0; ll res = 1; rep(i, r) res *= n-i, res /= i+1; return res; } template <typename T, typename U> T divceil(T m, U d) { return (m + d - 1) / d; } template <typename T> vector<T> make_v(size_t a, T b) { return vector<T>(a, b); } template <typename... Ts> auto make_v(size_t a, Ts... ts) { return vector<decltype(make_v(ts...))>(a, make_v(ts...)); } // debugging stuff #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wmisleading-indentation" #define repi(it, ds) for (auto it = ds.begin(); it != ds.end(); it++) class DebugPrint { public: template <typename T> DebugPrint& operator <<(const T& v) { #ifdef LOCAL cerr << v; #endif return *this; } } debugos; template <typename T> DebugPrint& operator<<(DebugPrint& os, const vector<T>& vec) { os << "{"; for (int i = 0; i < vec.size(); i++) os << vec[i] << (i + 1 == vec.size() ? "" : ", "); os << "}"; return os; } template <typename T, typename U> DebugPrint& operator<<(DebugPrint& os, const map<T, U>& map_var) { os << "{"; repi(itr, map_var) { os << * itr; itr++; if (itr != map_var.end()) os << ", "; itr--; } os << "}"; return os; } template < typename T> DebugPrint& operator<<(DebugPrint& os, const set<T>& set_var) { os << "{"; repi( itr, set_var) { os << *itr; itr++; if (itr != set_var.end()) os << ", "; itr--; } os << "}"; return os; } template <typename T, typename U> DebugPrint& operator<<(DebugPrint& os, const pair<T, U>& p) { os << "(" << p.first << ", " << p.second << ")"; return os; } void dump_func( ) { debugos << newl; } template <class Head, class... Tail> void dump_func(Head &&head, Tail &&... tail) { debugos << head; if (sizeof...(Tail) > 0) { debugos << ", "; } dump_func(forward <Tail>(tail)...); } #ifdef LOCAL #define dump(...) debugos << " " << string(#__VA_ARGS__) << ": " << "[" << to_string(__LINE__) \ << ":" << __FUNCTION__ << "]" << newl << " ", dump_func(__VA_ARGS__) #else #define dump(...) ({}) #endif #pragma GCC diagnostic pop #line 4 "data-structure/bit.cpp" class BIT { public: const int n; private: vector<ll> data; public: BIT(int n_ = 0) : n(n_), data(n_ + 1) {} template <typename Iter> BIT(Iter first, Iter last) : n(distance(first, last)) { data = vector<ll>(n + 1); copy(first, last, data.begin() + 1); auto zeroix = data.begin() + 1; rep(i, n) { int j = i | (i+1); if (j < n) zeroix[j] += zeroix[i]; } } void add(int p, ll v = 1) { p++; while (p <= n) { data[p] += v; p += p & -p; } } // sum over [0, p) ll sum(int p) { ll res = 0; while (p) { res += data[p]; p -= p & -p; } return res; } // sum over [l, r) ll sum(int l, int r) { return sum(r) - sum(l); } void clear() { fill(all(data), 0); } void assign(int p, ll v) { add(p, v - sum(p, p + 1)); } bool chmax(int p, ll v) { if (sum(p, p + 1) < v) { assign(p, v); return true; } else return false; } // min i s.t. sum over [0, i) >= v -- or n+1 if failed // requires data[i] >= 0 for any i int lower_bound(ll v) { if (v <= 0) return 0; int l = 0; for (int k = 1 << (32 - __builtin_clz(n) - 1); k; k >>= 1) if (l + k <= n and data[l + k] < v) v -= data[l += k]; return l + 1; } // min i s.t. sum over [0, i) > v -- or n+1 if failed // requires data[i] >= 0 for any i int upper_bound(ll v) { return lower_bound(v + 1); } };