Submission #1028781

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028781		Mardonbekhazratov	Rarest Insects (IOI22_insects)	C++17	10 / 100	230 ms	744 KiB

insects

#include "insects.h"

#include <vector>
#include <set>

using namespace std;

int min_cardinality(int N){
    set<int>s;
    vector<int>l;
    for(int i=0;i<N;i++){
        move_inside(i);
        l.push_back(i);
        if(press_button()>1){
            move_outside(i);
            s.insert(i);
            l.pop_back();
        }
    }
    int ans=1,last=l.size();
    while(l.size()>0){
        move_outside(l.back());
        l.pop_back();
    }
    while(true){
        set<int>new_s;
        for(int x:s){
            move_inside(x);
            l.push_back(x);
            if(press_button()>1){
                move_outside(x);
                new_s.insert(x);
                l.pop_back();
            }
        }
        if(l.size()!=last){
            return ans;
        }
        while(l.size()>0){
            move_outside(l.back());
            l.pop_back();
        }
        swap(new_s,s);
        ans++;
    }
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:36:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |         if(l.size()!=last){
      |            ~~~~~~~~^~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 75