#include <bits/stdc++.h>
#include "insects.h"
//#include "stub.cpp"
using namespace std;
int l,r,mid;
vector <int> PrevIndexIn,PrevIndexOut,RemainingInsects;
int InMachine[2003];
int n;
int TypeCount=0;
int CurrentInMachine=0;
int PossibleMincount(int cnt){
//Pushing insects inside the machine, keeping track of the ones being putted inside for this iteration of binary searching
shuffle(RemainingInsects.begin(),RemainingInsects.end(),mt);
for(int i=0;i<RemainingInsects.size();i++){
if(CurrentInMachine==cnt*TypeCount){
PrevIndexOut.push_back(RemainingInsects[i]);
continue;
}
move_inside(RemainingInsects[i]);
InMachine[RemainingInsects[i]]=1;
PrevIndexIn.push_back(RemainingInsects[i]);
CurrentInMachine++;
if(press_button()>cnt){
PrevIndexIn.pop_back();
PrevIndexOut.push_back(RemainingInsects[i]);
InMachine[RemainingInsects[i]]=0;
move_outside(RemainingInsects[i]);
CurrentInMachine--;
}
}
RemainingInsects.clear();
if(CurrentInMachine<cnt*TypeCount){
//There clearly exist a type of insect with cardinality less than cnt, so the answer is less than cnt. Removing insects from last iteration.
while(!PrevIndexIn.empty()){
InMachine[PrevIndexIn.back()]=0;
move_outside(PrevIndexIn.back());
PrevIndexOut.push_back(PrevIndexIn.back());
PrevIndexIn.pop_back();
CurrentInMachine--;
}
RemainingInsects=PrevIndexOut;
PrevIndexOut.clear();
return 0;
}else if(CurrentInMachine==cnt*TypeCount){
//As every type of insects has at least cnt insects, the answer is at least cnt. Just return true
RemainingInsects=PrevIndexOut;
PrevIndexIn.clear();
PrevIndexOut.clear();
return 1;
}
}
int min_cardinality(int N){
//Remember to initialize as this is multitest
for(int i=0;i<N;i++){
InMachine[i]=0;
}
PrevIndexIn.clear();
PrevIndexOut.clear();
RemainingInsects.clear();
n=N;
l=1;
//Phase 1: Determining the amount of different types of insects
TypeCount=0;
CurrentInMachine=0;
for(int i=0;i<n;i++){
move_inside(i);
InMachine[i]=1;
CurrentInMachine++;
if(press_button()>1){
move_outside(i);
InMachine[i]=0;
CurrentInMachine--;
}else{
TypeCount++;
}
}
for(int i=0;i<n;i++){
if(!InMachine[i]){
RemainingInsects.push_back(i);
}
}
r=(RemainingInsects.size()/TypeCount+1);
int ans=1;
//Phase 2: Binary search for the answer
while(r-l>=1){
mid=(l+r+1)/2;
if(PossibleMincount(mid)){
ans=max(ans,mid);
l=mid;
r=min(r,mid+(n-CurrentInMachine)/TypeCount);
}else{
r=mid-1;
}
}
return ans;
}
Compilation message
insects.cpp: In function 'int PossibleMincount(int)':
insects.cpp:14:58: error: 'mt' was not declared in this scope; did you mean 'tm'?
14 | shuffle(RemainingInsects.begin(),RemainingInsects.end(),mt);
| ^~
| tm
insects.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | for(int i=0;i<RemainingInsects.size();i++){
| ~^~~~~~~~~~~~~~~~~~~~~~~~
insects.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type]
52 | }
| ^
