/*
author: Maksim1744
created: 28.04.2024 03:07:13
*/
#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ld = long double;
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define sum(a) ( accumulate ((a).begin(), (a).end(), 0ll))
#define mine(a) (*min_element((a).begin(), (a).end()))
#define maxe(a) (*max_element((a).begin(), (a).end()))
#define mini(a) ( min_element((a).begin(), (a).end()) - (a).begin())
#define maxi(a) ( max_element((a).begin(), (a).end()) - (a).begin())
#define lowb(a, x) ( lower_bound((a).begin(), (a).end(), (x)) - (a).begin())
#define uppb(a, x) ( upper_bound((a).begin(), (a).end(), (x)) - (a).begin())
template<typename T> vector<T>& operator-- (vector<T> &v){for (auto& i : v) --i; return v;}
template<typename T> vector<T>& operator++ (vector<T> &v){for (auto& i : v) ++i; return v;}
template<typename T> istream& operator>>(istream& is, vector<T> &v){for (auto& i : v) is >> i; return is;}
template<typename T> ostream& operator<<(ostream& os, vector<T> v){for (auto& i : v) os << i << ' '; return os;}
template<typename T, typename U> pair<T,U>& operator-- (pair<T, U> &p){--p.first; --p.second; return p;}
template<typename T, typename U> pair<T,U>& operator++ (pair<T, U> &p){++p.first; ++p.second; return p;}
template<typename T, typename U> istream& operator>>(istream& is, pair<T, U> &p){is >> p.first >> p.second; return is;}
template<typename T, typename U> ostream& operator<<(ostream& os, pair<T, U> p){os << p.first << ' ' << p.second; return os;}
template<typename T, typename U> pair<T,U> operator-(pair<T,U> a, pair<T,U> b){return mp(a.first-b.first, a.second-b.second);}
template<typename T, typename U> pair<T,U> operator+(pair<T,U> a, pair<T,U> b){return mp(a.first+b.first, a.second+b.second);}
template<typename T, typename U> void umin(T& a, U b){if (a > b) a = b;}
template<typename T, typename U> void umax(T& a, U b){if (a < b) a = b;}
#ifdef HOME
#define SHOW_COLORS
#include "/mnt/c/Libs/tools/print.cpp"
#else
#define show(...) void(0)
#define debugf(fun) fun
#define debugv(var) var
#define mclock void(0)
#define shows void(0)
#define debug if (false)
#define OSTREAM(...) ;
#define OSTREAM0(...) ;
#endif
void move_inside(int i);
void move_outside(int i);
int press_button();
#ifdef HOUSE
set<int> cur;
vector<int> col;
array<int, 3> que;
void move_inside(int i) {
++que[0];
cur.insert(i);
}
void move_outside(int i) {
++que[1];
cur.erase(i);
}
int press_button() {
++que[2];
map<int, int> u;
for (int i : cur)
u[col[i]]++;
int ans = 0;
for (auto [a, b] : u)
ans = max(ans, b);
return ans;
}
#endif
int min_cardinality(int n) {
mt19937_64 rng(11112);
set<int> cur;
map<string, int> mem;
string scur(n, '0');
pair<int, int> pot = {0, 0};
auto add = [&](int i) {
if (cur.count(i)) return;
cur.insert(i);
scur[i] ^= '0' ^ '1';
move_inside(i);
pot.second++;
pot.second = min(pot.second, (int)cur.size());
};
auto rem = [&](int i) {
if (!cur.count(i)) return;
cur.erase(i);
scur[i] ^= '0' ^ '1';
move_outside(i);
pot.first--;
pot.first = max(pot.first, cur.empty() ? 0 : 1);
};
auto ask_int = [&]() -> int {
if (cur.size() <= 1) return cur.size();
if (mem.count(scur)) return mem[scur];
return mem[scur] = press_button();
// return press_button();
};
auto ask = [&]() -> int {
int e = ask_int();
pot = {e, e};
return e;
};
auto clear = [&]() {
while (!cur.empty())
rem(*cur.begin());
};
for (int i = 0; i < n; ++i) {
add(i);
if (ask() > 1) {
rem(i);
}
}
if (cur.size() == n) return 1;
int dif = cur.size();
set<int> left;
for (int i = 0; i < n; ++i) {
left.insert(i);
}
int L = 1, R = 1;
while (R * cur.size() <= n) ++R;
int m = 0;
for (int i : cur)
left.erase(i);
clear();
m = 1;
while (R - L > 1) {
int C = (L + R) / 2;
while (C <= L) ++C;
while (C >= R) --C;
int cleft = left.size();
set<int> checked;
vector<int> vleft(left.begin(), left.end());
// shuffle(vleft.begin(), vleft.end(), rng);
for (int i : vleft) {
if (cur.size() == (C - m) * dif) {
break;
}
if (cur.size() + cleft < (C - m) * dif) {
for (int u : left)
if (!checked.count(u))
add(u);
// cur.insert(u);
break;
}
add(i);
checked.insert(i);
if (pot.second > C - m && ask() > C - m)
rem(i);
--cleft;
}
if (cur.size() == (C - m) * dif) {
for (int i : cur)
left.erase(i);
clear();
L = C;
m = L;
} else {
// for (int i = 0; i < n; ++i) {
// if (!cur.count(i))
// left.erase(i);
// }
left = cur;
clear();
R = C;
}
}
return L;
}
#ifdef HOUSE
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(3294793);
ll rnd (ll l, ll r) { return (ll)(rng() % (r - l + 1)) + l; }
ll rnd (ll r) { return rng() % r; }
ll rnd () { return rng(); }
ld rndf() { return (ld)rng() / (ld)ULLONG_MAX; }
ld rndf(ld l, ld r) { return rndf() * (r - l) + l; }
int main() {
ios_base::sync_with_stdio(false); cin.tie(NULL);
int mxq = 0;
int T = 100000;
int n = 2000;
for (int t = 1; t <= T; ++t) {
rng.seed(t);
int C = rnd(1, 200);
// int C = rnd(1, n);
cur.clear();
col.resize(n);
for (int i = 0; i < n; ++i)
col[i] = rnd(C);
que.fill(0);
int ans = 1e9;
map<int, int> m;
for (int i : col)
m[i]++;
for (auto [a, b] : m)
ans = min(ans, b);
int x = min_cardinality(n);
// cerr << "ans=" << ans << " out=" << x << endl;
// cerr << "que: ";
// for (int x : que)
// cerr << x << ' ';
// cerr << endl;
// cerr << fixed << setprecision(3) << (ld)maxe(que) / n << endl;
show(m);
assert(ans == x);
// assert(maxe(que) <= n * 3);
mxq = max(mxq, maxe(que));
cerr << "t=" << t << ' ' << "mxq: " << maxe(que) << " " << (ld)mxq / n << ' ' << "C=" << C << endl;
if (mxq > n * 3) {
cerr << "ans=" << ans << " out=" << x << endl;
cerr << "que: ";
for (int x : que)
cerr << x << ' ';
cerr << endl;
}
assert(mxq <= n * 3);
}
return 0;
}
#endif
