//
// Created by adavy on 8/29/2024.
//
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
/*
static std::vector<int> op_counter(3, 0);
void move_inside(int i);
void move_outside(int i);
int press_button();
int min_cardinality(int N);
*/
int min_cardinality(int N) {
int num_types = 0;
set<int> outside, inside;
for(int i=0;i<N;++i){
move_inside(i);
if (press_button() == 2){
move_outside(i);
outside.insert(i);
} else {
inside.insert(i);
num_types++;
}
}
int lo = 1, hi = N/num_types;
cerr << "num_types: " << num_types << endl;
while (lo<hi){
int mid = (lo+hi+1)/2;
cerr << lo << " " << mid << " " << hi << endl;
cerr << "outside, inside: " << outside.size() << " " << inside.size() << endl;
cerr << op_counter[0] << " " << op_counter[1] << " " << op_counter[2] << endl;
/*
cout << lo << " " << hi << " " << mid << endl;
for(auto& j:outside) cout << j << " ";
cout << endl;
for (auto& j:inside) cout << j << " ";
cout << endl;*/
set<int> new_outside;
set<int> to_kill;
for(auto& i:outside){
move_inside(i);
if (press_button() > mid){
move_outside(i); new_outside.insert(i);
} else {
inside.insert(i);
to_kill.insert(i);
}
}
outside = new_outside;
if (inside.size() == num_types*mid) {
lo = mid; // goes up
} else {
hi = mid-1; // goes down
outside.clear();
for (auto&x:to_kill){
inside.erase(x);
outside.insert(x);
move_outside(x);
}
}
}
//cerr << op_counter[0] << " " << op_counter[1] << " " << op_counter[2] << endl;
return lo;
}
/*
#include <cassert>
#include <cstdio>
#include <algorithm>
#include <map>
#include <set>
#include <string>
#include <vector>
static inline constexpr int kMaxQueries = 40000;
static int N;
// Insect types are compressed to colors in the range [0, N).
static std::vector<int> color;
static std::vector<bool> in_box;
static std::vector<int> color_occurrences;
static std::multiset<int> max_occurrences;
static inline void protocol_violation(std::string message) {
printf("Protocol Violation: %s\n", message.c_str());
exit(0);
}
void move_inside(int i) {
if (i < 0 || i >= N) {
protocol_violation("invalid parameter");
}
++op_counter[0];
if (op_counter[0] > kMaxQueries) {
protocol_violation("too many calls");
}
if (!in_box[i]) {
in_box[i] = true;
max_occurrences.erase(max_occurrences.find(color_occurrences[color[i]]));
++color_occurrences[color[i]];
max_occurrences.insert(color_occurrences[color[i]]);
}
}
void move_outside(int i) {
if (i < 0 || i >= N) {
protocol_violation("invalid parameter");
}
++op_counter[1];
if (op_counter[1] > kMaxQueries) {
protocol_violation("too many calls");
}
if (in_box[i]) {
in_box[i] = false;
max_occurrences.erase(max_occurrences.find(color_occurrences[color[i]]));
--color_occurrences[color[i]];
max_occurrences.insert(color_occurrences[color[i]]);
}
}
int press_button() {
++op_counter[2];
if (op_counter[2] > kMaxQueries) {
protocol_violation("too many calls");
}
return *(max_occurrences.rbegin());
}
int main() {
assert(1 == scanf("%d", &N));
color.resize(N);
in_box.assign(N, false);
std::map<int, int> type_to_color;
for (int i = 0; i < N; ++i) {
int Ti = rand()%20;
//assert(1 == scanf("%d", &Ti));
if (type_to_color.find(Ti) == type_to_color.end()) {
int new_color = type_to_color.size();
type_to_color[Ti] = new_color;
max_occurrences.insert(0);
}
color[i] = type_to_color[Ti];
}
color_occurrences.assign(type_to_color.size(), 0);
int answer = min_cardinality(N);
int Q = *std::max_element(op_counter.begin(), op_counter.end());
printf("%d\n", answer);
printf("%d\n", Q);
return 0;
}
*/
Compilation message
insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:51:17: error: 'op_counter' was not declared in this scope
51 | cerr << op_counter[0] << " " << op_counter[1] << " " << op_counter[2] << endl;
| ^~~~~~~~~~
insects.cpp:76:27: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
76 | if (inside.size() == num_types*mid) {
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
