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Submission #859309

# Submission time Handle Problem Language Result Execution time Memory
859309 2023-10-10T03:45:23 Z MasterDobby Rarest Insects (IOI22_insects) C++17
0 / 100
 21 ms 600 KB 
#include <bits/stdc++.h>
#include "insects.h"
#define all(a) a.begin(),a.end()
#define pii pair<int,int>

using namespace std;
using ll = long long;

int ch[2020];

int min_cardinality(int n){
    int cnt=1,mx=0;
    ch[0]=1;
    move_inside(0);
    for(int i=1;i<n;i++){
        move_inside(i);
        int num=press_button();
        if(num==1){
            ch[i]=1;
            cnt++;
            mx=n-i;
        }
        else{
            move_outside(i);
        }
    }
    if(cnt==1) return n;
    // for(int i=0;i<n;i++){
    //     if(ch[i]) continue;
    //     move_inside(i);
    // }
    // mx=min(mx,press_button());
    // for(int i=0;i<n;i++){
    //     if(ch[i]) continue;
    //     move_outside(i);
    // }
    int l=1,r=min((int)n/cnt,mx),now=cnt;
    while(l<r){
        int mid=(l+r+1)/2;
        int cnt2=now;
        vector<int> nw;
        for(int j=0;j<n;j++){
            if(cnt2==mid*cnt) break;
            if(ch[j]) continue;
            move_inside(j);
            int num=press_button();
            if(num<=mid){
                ch[j]=1;
                nw.push_back(j);
                cnt2++;
                mx=min(mx,n-j);
            }
            else{
                move_outside(j);
            }
        }
        if(cnt2==mid*cnt) l=mid,now=cnt2,r=min(r,mx);
        else{
            r=mid-1;
            for(auto x:nw) move_outside(x),ch[x]=0;
        }
    }
    return l;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Incorrect 2 ms 344 KB Wrong answer.
9 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Incorrect 2 ms 344 KB Wrong answer.
9 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 11 ms 344 KB Output is correct
8 Correct 9 ms 600 KB Output is correct
9 Incorrect 21 ms 432 KB Wrong answer.
10 Halted 0 ms 0 KB -