#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
vector<bool> flag(2020,false);
int ans=1,snow=1,mxans=0;
int min_cardinality(int N) {
flag[0]=true;
move_inside(0);
for(int i=1;i<N;i++){
move_inside(i);
if(press_button()!=1)move_outside(i);
else snow++,flag[i]=true;
}
int l=1,r=(N+snow-1)/snow;
while(l<=r){
int mid=(l+r)/2;
stack<int> rollA,rollB;
int cnt=0;
for(int i=0;i<N;i++){
if(cnt==(mid-ans)*snow)break;
if(flag[i])continue;
move_inside(i);
if(press_button()>mid)move_outside(i),flag[i]=true,rollA.push(i);
else{
cnt++;
rollB.push(i);
}
}
if(cnt==(mid-ans)*snow){
ans=mid;
l=mid+1;
while(rollA.size()){
flag[rollA.top()]=!flag[rollA.top()];
rollA.pop();
}
while(rollB.size()){
flag[rollB.top()]=!flag[rollB.top()];
rollB.pop();
}
}
else{
r=mid-1;
while(rollB.size()){
move_outside(rollB.top());
rollB.pop();
}
}
}
return ans;
}
