oj.uz

Submission #932561

# Submission time Handle Problem Language Result Execution time Memory
932561 2024-02-23T15:41:04 Z velislavgarkov Rarest Insects (IOI22_insects) C++17
100 / 100
 27 ms 1108 KB 
#include "insects.h"
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
const int MAXN=1e4;
bool used[MAXN];
int perm[MAXN];
vector <int> last, removed;
int n, ss, d;
bool check(int x) {
    if (!last.empty()) last.clear();
    if (!removed.empty()) removed.clear();
    for (int i=0;i<n;i++) {
        int j=perm[i];
        if (used[j]) continue;
        move_inside(j);
        if (press_button()>x) {
            move_outside(j);
            removed.push_back(j);
        } else last.push_back(j);
        if (ss+last.size()==d*x) return true;
    }
    return false;
}
int min_cardinality(int N) {
    n=N;
    d=0;
    for (int i=0;i<n;i++) perm[i]=i;
    random_shuffle(perm,perm+n);
    for (int i=0;i<n;i++) {
        int j=perm[i];
        move_inside(j);
        if (press_button()>1) move_outside(j);
        else {
            used[j]=true;
            d++;
        }
    }
    ss=d;
    int l, r, mid;
    l=1; r=n/d+1;
    while (l<r-1) {
        mid=(l+r)/2;
        if (check(mid)) {
            l=mid;
            ss+=last.size();
            for (auto i:last) used[i]=true;
        } else {
            r=mid;
            for (auto i:removed) used[i]=true;
            for (auto i:last) move_outside(i);
        }
    }
    return l;
}

Compilation message

insects.cpp: In function 'bool check(int)':
insects.cpp:22:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |         if (ss+last.size()==d*x) return true;
      |             ~~~~~~~~~~~~~~^~~~~

Subtask #1
10.0 / 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 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 444 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 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 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 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 444 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 9 ms 448 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 11 ms 600 KB Output is correct
26 Correct 12 ms 600 KB Output is correct
27 Correct 9 ms 856 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 12 ms 600 KB Output is correct
30 Correct 11 ms 848 KB Output is correct
31 Correct 9 ms 344 KB Output is correct
32 Correct 10 ms 444 KB Output is correct
33 Correct 11 ms 444 KB Output is correct
34 Correct 13 ms 448 KB Output is correct
35 Correct 11 ms 600 KB Output is correct
36 Correct 13 ms 680 KB Output is correct
37 Correct 13 ms 600 KB Output is correct
38 Correct 10 ms 864 KB Output is correct
39 Correct 9 ms 608 KB Output is correct
40 Correct 7 ms 600 KB Output is correct
41 Correct 4 ms 344 KB Output is correct

Subtask #3
75.0 / 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 1 ms 344 KB Output is correct
7 Correct 16 ms 700 KB Output is correct
8 Correct 8 ms 344 KB Output is correct
9 Correct 18 ms 424 KB Output is correct
10 Correct 23 ms 592 KB Output is correct
11 Correct 22 ms 684 KB Output is correct
12 Correct 14 ms 704 KB Output is correct
13 Correct 23 ms 444 KB Output is correct
14 Correct 25 ms 440 KB Output is correct
15 Correct 19 ms 448 KB Output is correct
16 Correct 16 ms 592 KB Output is correct
17 Correct 27 ms 600 KB Output is correct
18 Correct 23 ms 680 KB Output is correct
19 Correct 24 ms 440 KB Output is correct
20 Correct 20 ms 592 KB Output is correct
21 Correct 22 ms 1108 KB Output is correct
22 Correct 24 ms 688 KB Output is correct
23 Correct 26 ms 848 KB Output is correct
24 Correct 19 ms 696 KB Output is correct
25 Correct 15 ms 432 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 20 ms 708 KB Output is correct
28 Correct 24 ms 592 KB Output is correct
29 Correct 21 ms 592 KB Output is correct
30 Correct 20 ms 448 KB Output is correct
31 Correct 26 ms 444 KB Output is correct
32 Correct 23 ms 856 KB Output is correct
33 Correct 25 ms 1104 KB Output is correct
34 Correct 27 ms 600 KB Output is correct
35 Correct 21 ms 592 KB Output is correct
36 Correct 22 ms 848 KB Output is correct
37 Correct 24 ms 344 KB Output is correct
38 Correct 26 ms 684 KB Output is correct
39 Correct 20 ms 452 KB Output is correct
40 Correct 25 ms 848 KB Output is correct
41 Correct 21 ms 684 KB Output is correct
42 Correct 25 ms 456 KB Output is correct
43 Correct 6 ms 600 KB Output is correct
44 Correct 18 ms 852 KB Output is correct
45 Correct 17 ms 684 KB Output is correct
46 Correct 12 ms 592 KB Output is correct
47 Correct 12 ms 452 KB Output is correct
48 Correct 15 ms 444 KB Output is correct