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Submission #650082

# Submission time Handle Problem Language Result Execution time Memory
650082 2022-10-12T10:18:17 Z huutuan Rarest Insects (IOI22_insects) C++17
100 / 100
 74 ms 1316 KB 
#include "insects.h"
#include<bits/stdc++.h>
 
using namespace std;
 
int min_cardinality(int n){
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    vector<int> sus(n); iota(sus.begin(), sus.end(), 0); shuffle(sus.begin(), sus.end(), rng);
    set<int> s;
    auto in=[&](int i){
        if (s.count(i)) return;
        s.insert(i);
        move_inside(sus[i]);
    };
    auto out=[&](int i){
        if (!s.count(i)) return;
        s.erase(i);
        move_outside(sus[i]);
    };
    for (int i=0; i<n; ++i){
        in(i);
        if (press_button()>1) out(i);
    }
    int cnt=s.size();
    map<int, set<int>> memo;
    memo[1]=s;
    for (int i=0; i<n; ++i) memo[n].insert(i);
    int l=2, r=n/cnt;
    while (l<=r){
        int mid=(l+r)>>1;
        auto it=memo.lower_bound(mid);
        set<int> t;
        for (int i:it->second) if (!s.count(i)){
            in(i);
            if (press_button()>mid) out(i);
            else t.insert(i);
            if ((int)s.size()>=cnt*mid) break;
        }
        int k=s.size();
        memo[mid]=s;
        if (k>=cnt*mid) l=mid+1;
        else{
            r=mid-1;
            for (int i:t) out(i);
        }
    }
    return r;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 6 ms 300 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 336 KB Output is correct
9 Correct 7 ms 332 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 320 KB Output is correct
13 Correct 6 ms 300 KB Output is correct
14 Correct 7 ms 300 KB Output is correct
15 Correct 5 ms 336 KB Output is correct
16 Correct 6 ms 336 KB Output is correct
17 Correct 8 ms 304 KB Output is correct
18 Correct 6 ms 320 KB Output is correct
19 Correct 5 ms 336 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 3 ms 300 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 6 ms 300 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 5 ms 336 KB Output is correct
9 Correct 7 ms 332 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 6 ms 320 KB Output is correct
13 Correct 6 ms 300 KB Output is correct
14 Correct 7 ms 300 KB Output is correct
15 Correct 5 ms 336 KB Output is correct
16 Correct 6 ms 336 KB Output is correct
17 Correct 8 ms 304 KB Output is correct
18 Correct 6 ms 320 KB Output is correct
19 Correct 5 ms 336 KB Output is correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 3 ms 300 KB Output is correct
23 Correct 14 ms 688 KB Output is correct
24 Correct 9 ms 336 KB Output is correct
25 Correct 29 ms 568 KB Output is correct
26 Correct 18 ms 468 KB Output is correct
27 Correct 12 ms 308 KB Output is correct
28 Correct 6 ms 308 KB Output is correct
29 Correct 27 ms 300 KB Output is correct
30 Correct 30 ms 328 KB Output is correct
31 Correct 23 ms 632 KB Output is correct
32 Correct 31 ms 548 KB Output is correct
33 Correct 26 ms 556 KB Output is correct
34 Correct 27 ms 552 KB Output is correct
35 Correct 22 ms 508 KB Output is correct
36 Correct 24 ms 532 KB Output is correct
37 Correct 24 ms 432 KB Output is correct
38 Correct 28 ms 304 KB Output is correct
39 Correct 19 ms 296 KB Output is correct
40 Correct 12 ms 328 KB Output is correct
41 Correct 11 ms 320 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 224 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 37 ms 1316 KB Output is correct
8 Correct 25 ms 480 KB Output is correct
9 Correct 38 ms 932 KB Output is correct
10 Correct 57 ms 668 KB Output is correct
11 Correct 54 ms 420 KB Output is correct
12 Correct 38 ms 464 KB Output is correct
13 Correct 47 ms 428 KB Output is correct
14 Correct 74 ms 416 KB Output is correct
15 Correct 45 ms 1068 KB Output is correct
16 Correct 58 ms 1096 KB Output is correct
17 Correct 44 ms 1152 KB Output is correct
18 Correct 58 ms 1056 KB Output is correct
19 Correct 51 ms 1044 KB Output is correct
20 Correct 48 ms 952 KB Output is correct
21 Correct 57 ms 592 KB Output is correct
22 Correct 59 ms 548 KB Output is correct
23 Correct 64 ms 436 KB Output is correct
24 Correct 41 ms 572 KB Output is correct
25 Correct 30 ms 576 KB Output is correct
26 Correct 22 ms 480 KB Output is correct
27 Correct 26 ms 820 KB Output is correct
28 Correct 58 ms 780 KB Output is correct
29 Correct 49 ms 908 KB Output is correct
30 Correct 23 ms 944 KB Output is correct
31 Correct 52 ms 684 KB Output is correct
32 Correct 33 ms 688 KB Output is correct
33 Correct 63 ms 456 KB Output is correct
34 Correct 57 ms 432 KB Output is correct
35 Correct 40 ms 968 KB Output is correct
36 Correct 60 ms 808 KB Output is correct
37 Correct 55 ms 656 KB Output is correct
38 Correct 48 ms 712 KB Output is correct
39 Correct 49 ms 736 KB Output is correct
40 Correct 30 ms 688 KB Output is correct
41 Correct 55 ms 896 KB Output is correct
42 Correct 41 ms 864 KB Output is correct
43 Correct 14 ms 208 KB Output is correct
44 Correct 42 ms 428 KB Output is correct
45 Correct 40 ms 1304 KB Output is correct
46 Correct 33 ms 456 KB Output is correct
47 Correct 35 ms 436 KB Output is correct
48 Correct 35 ms 452 KB Output is correct