#include #include #include using namespace std; typedef unsigned long long _ulong; typedef long long int lint; typedef long double ld; typedef pair plint; typedef pair pld; #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((lint)(x).size()) #define FOR(i, begin, end) for(lint i=(begin),i##_end_=(end);i=i##_begin_;--i) #define REP(i, n) FOR(i,0,n) #define IREP(i, n) IFOR(i,0,n) #define endk '\n' #define fi first #define se second struct fast_ios { fast_ios() { cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_; template auto add = [](T a, T b) -> T { return a + b; }; template auto f_max = [](T a, T b) -> T { return max(a, b); }; template auto f_min = [](T a, T b) -> T { return min(a, b); }; template using V = vector; using Vl = V; using VVl = V; 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 bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } template bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } lint gcd(lint a, lint b) { if (b == 0) return a; else return gcd(b, a % b); } lint ceil(lint a, lint b) { return (a + b - 1) / b; } lint digit(lint a) { return (lint)log10(a); } lint e_dist(plint a, plint b) { return abs(a.fi - b.fi) * abs(a.fi - b.fi) + abs(a.se - b.se) * abs(a.se - b.se); } lint m_dist(plint a, plint b) { return abs(a.fi - b.fi) + abs(a.se - b.se); } bool check_overflow(lint a, lint b, lint limit) { return a > limit / b; } // a * b > c => true void Worshall_Floyd(VVl& g) { REP(k, SZ(g)) REP(i, SZ(g)) REP(j, SZ(g)) chmin(g[i][j], g[i][k] + g[k][j]); } const lint MOD1000000007 = 1000000007, MOD998244353 = 998244353, INF = 5e12; lint dx[8] = { 1, 0, -1, 0, 1, -1, 1, -1 }, dy[8] = { 0, 1, 0, -1, -1, -1, 1, 1 }; bool YN(bool flag) { cout << (flag ? "YES" : "NO") << endk; return flag; } bool yn(bool flag) { cout << (flag ? "Yes" : "No") << endk; return flag; } struct Edge { lint from, to; lint cost; Edge() { } Edge(lint u, lint v, lint c) { cost = c; from = u; to = v; } bool operator<(const Edge& e) const { return cost < e.cost; } }; struct WeightedEdge { lint to; lint cost; WeightedEdge(lint v, lint c = 1) { to = v; cost = c; } bool operator<(const WeightedEdge& e) const { return cost < e.cost; } }; using WeightedGraph = V>; typedef pair tlint; typedef pair qlint; typedef pair valchar; struct BinaryIndexedTree { int n; int b; vector bit; BinaryIndexedTree(int n_) : n(n_ + 1), bit(n, 0) {} void add(int i, lint x) { for (int idx = i; idx < n; idx += (idx & -idx)) { bit[idx] += x; } } lint sum(int i) { lint s = 0; for (int idx = i; idx > 0; idx -= (idx & -idx)) { s += bit[idx]; } return s; } int lower_bound(lint w) { if (w <= 0) { return 0; } else { int x = 0, r = 1; while (r < n) r = r << 1; for (int len = r; len > 0; len = len >> 1) { if (x + len < n && bit[x + len] < w) { w -= bit[x + len]; x += len; } } return x; } } void show() { for (int i = 0; i < n - 1; i++) { cout << sum(i) - sum(i - 1) << " "; } cout << endk; } }; struct ExtendBinaryIndexedTree { public: ExtendBinaryIndexedTree(int _n) { init(_n); } //半開区間[l, r) void add(int l, int r, lint x) { add_sub(0, l, -x * (l - 1)); add_sub(0, r, x * (r - 1)); add_sub(1, l, x); add_sub(1, r, -x); } //区間[0, i) lint sum(int i) { return sum_sub(0, i) + sum_sub(1, i) * i; } void show() { for (int i = 0; i < n - 1; i++) { cout << sum(i + 1) - sum(i) << " "; } cout << endk; } private: int n; vector bit[2]; void init(int _n) { n = _n + 1; bit[0].assign(n, 0); bit[1].assign(n, 0); } void add_sub(int p, int i, lint x) { for (int idx = i; idx < n; idx += (idx & -idx)) { bit[p][idx] += x; } } lint sum_sub(int p, int i) { lint s = 0; for (int idx = i; idx > 0; idx -= (idx & -idx)) { s += bit[p][idx]; } return s; } }; lint N; int main() { cin >> N; Vl arr(N); cin >> arr; Vl _arr = arr; sort(ALL(_arr)); map> pos; reverse(ALL(arr)); REP(i, N) { pos[arr[i]].insert(i); } BinaryIndexedTree tree(N); REP(i, N) tree.add(i + 1, 1); lint prv = 0, ans = 0; IREP(i, N) { auto itr = pos[_arr[i]].lower_bound(prv); if (itr == pos[_arr[i]].end()) { itr = pos[_arr[i]].lower_bound(0); if (tree.sum(N) - tree.sum(prv) + tree.sum(*itr + 1) > 1) ans++; tree.add(*itr + 1, -1); } else { if (tree.sum(*itr + 1) - tree.sum(prv) > 1) ans++; tree.add(*itr + 1, -1); } prv = *itr; pos[_arr[i]].erase(itr); } cout << ans << endk; }