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Submission #1025095

# Submission time Handle Problem Language Result Execution time Memory
1025095 2024-07-16T15:54:51 Z vjudge1 Rarest Insects (IOI22_insects) C++17
100 / 100
 43 ms 1192 KB 
#include "insects.h"
#include <bits/stdc++.h>

#define ll long long
#define sz(s) (int)s.size()
#define pb push_back
#define in insert
#define lb lower_bound
#define ub upper_bound
#define all(v) v.begin(),v.end()

using namespace std;

const int MAX=2e5+10;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n;
set<int> a;
set<int> b;
set<int> st;
vector<int> pos;

bool check(int m){
    vector<int> vec;
    vector<int> vec1;
    for(int i:b){
        move_inside(pos[i]);
        if(press_button()>m){
            move_outside(pos[i]);
            vec1.pb(i);
        }
        else{
            st.in(i);
            vec.pb(i);
        }
        if(sz(st)==m*sz(a)){
            for(int x:vec)b.erase(x);
            return 1;
        }
    }
    if(sz(st)<m*sz(a)){
        for(int x:vec){
            move_outside(pos[x]);
            st.erase(x);
        }
        for(int x:vec1)b.erase(x);
    }
    else{
        for(int x:vec)b.erase(x);
    }
    return (sz(st)==m*sz(a));
}

int min_cardinality(int N){
    n=N;
    for(int i=0;i<n;i++)pos.pb(i);
    shuffle(all(pos),rng);
    for(int i=0;i<N;i++){
        move_inside(pos[i]);
        if(press_button()==2){
            b.in(i);
            move_outside(pos[i]);
        }
        else{
            st.in(i);
            a.in(i);
        }
    }
    int l=1,r=N/sz(a),res=1;
    while(l<=r){
        int m=(l+r)/2;
        if(check(m)){
            l=m+1;
            res=m;
        }
        else r=m-1;
    }
    return res;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 2 ms 452 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 452 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 3 ms 448 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 2 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 2 ms 452 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 452 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 3 ms 448 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 8 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 14 ms 344 KB Output is correct
26 Correct 17 ms 344 KB Output is correct
27 Correct 8 ms 344 KB Output is correct
28 Correct 3 ms 344 KB Output is correct
29 Correct 12 ms 488 KB Output is correct
30 Correct 14 ms 344 KB Output is correct
31 Correct 16 ms 600 KB Output is correct
32 Correct 11 ms 484 KB Output is correct
33 Correct 16 ms 600 KB Output is correct
34 Correct 17 ms 456 KB Output is correct
35 Correct 17 ms 600 KB Output is correct
36 Correct 14 ms 480 KB Output is correct
37 Correct 18 ms 856 KB Output is correct
38 Correct 15 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 5 ms 492 KB Output is correct
41 Correct 6 ms 344 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 20 ms 560 KB Output is correct
8 Correct 14 ms 656 KB Output is correct
9 Correct 38 ms 588 KB Output is correct
10 Correct 29 ms 492 KB Output is correct
11 Correct 33 ms 600 KB Output is correct
12 Correct 21 ms 796 KB Output is correct
13 Correct 25 ms 344 KB Output is correct
14 Correct 33 ms 652 KB Output is correct
15 Correct 28 ms 600 KB Output is correct
16 Correct 33 ms 992 KB Output is correct
17 Correct 43 ms 848 KB Output is correct
18 Correct 26 ms 644 KB Output is correct
19 Correct 20 ms 344 KB Output is correct
20 Correct 29 ms 600 KB Output is correct
21 Correct 32 ms 1024 KB Output is correct
22 Correct 28 ms 1032 KB Output is correct
23 Correct 22 ms 344 KB Output is correct
24 Correct 16 ms 592 KB Output is correct
25 Correct 15 ms 600 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 27 ms 1048 KB Output is correct
28 Correct 29 ms 508 KB Output is correct
29 Correct 23 ms 344 KB Output is correct
30 Correct 22 ms 344 KB Output is correct
31 Correct 26 ms 736 KB Output is correct
32 Correct 22 ms 1192 KB Output is correct
33 Correct 25 ms 592 KB Output is correct
34 Correct 43 ms 488 KB Output is correct
35 Correct 30 ms 800 KB Output is correct
36 Correct 28 ms 592 KB Output is correct
37 Correct 36 ms 600 KB Output is correct
38 Correct 22 ms 344 KB Output is correct
39 Correct 21 ms 600 KB Output is correct
40 Correct 29 ms 460 KB Output is correct
41 Correct 30 ms 632 KB Output is correct
42 Correct 21 ms 344 KB Output is correct
43 Correct 5 ms 344 KB Output is correct
44 Correct 31 ms 500 KB Output is correct
45 Correct 16 ms 344 KB Output is correct
46 Correct 13 ms 564 KB Output is correct
47 Correct 18 ms 1112 KB Output is correct
48 Correct 15 ms 676 KB Output is correct