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Submission #886581

# Submission time Handle Problem Language Result Execution time Memory
886581 2023-12-12T10:39:36 Z thinknoexit Rarest Insects (IOI22_insects) C++17
100 / 100
 31 ms 852 KB 
#include <bits/stdc++.h>
#include "insects.h"
using namespace std;
using ll = long long;
int n;
int sz = 0;
bool mark[2020];
void putin(int x) {
    move_inside(x);
    sz++;
}
void putout(int x) {
    move_outside(x);
    sz--;
}
int val() {
    return press_button();
}
int min_cardinality(int N) {
    n = N;
    vector<int> a(n);
    for (int i = 0;i < n;i++) a[i] = i;
    random_shuffle(a.begin(), a.end());
    putin(a[0]);
    mark[a[0]] = 1;
    for (int i = 1;i < n;i++) {
        putin(a[i]);
        if (val() == 2) {
            putout(a[i]);
        }
        else {
            mark[a[i]] = 1;
        }
    }
    int type = sz;
    if (type == n) return 1;
    int l = 1, r = n / sz;
    while (l < r) {
        int mid = (l + r + 1) / 2;
        stack<int> st, st2;
        for (int i = 0;i < n;i++) {
            if (sz == type * mid) break;
            if (mark[a[i]]) continue;
            putin(a[i]);
            if (val() > mid) {
                putout(a[i]);
                mark[a[i]] = 1;
                st2.push(a[i]);
            }
            else {
                st.push(a[i]);
            }
        }
        if (sz == type * mid) {
            while (!st.empty()) {
                mark[st.top()] ^= 1;
                st.pop();
            }
            while (!st2.empty()) {
                mark[st2.top()] ^= 1;
                st2.pop();
            }
            l = mid;
        }
        else {
            if (l == mid - 1) return l;
            while (!st.empty()) {
                putout(st.top());
                st.pop();
            }
            r = mid - 1;
        }
    }
    return l;
}

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 3 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 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 1 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 3 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 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 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 8 ms 600 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 11 ms 600 KB Output is correct
26 Correct 11 ms 344 KB Output is correct
27 Correct 14 ms 440 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 12 ms 600 KB Output is correct
30 Correct 13 ms 608 KB Output is correct
31 Correct 11 ms 600 KB Output is correct
32 Correct 11 ms 600 KB Output is correct
33 Correct 11 ms 600 KB Output is correct
34 Correct 11 ms 444 KB Output is correct
35 Correct 10 ms 600 KB Output is correct
36 Correct 12 ms 600 KB Output is correct
37 Correct 10 ms 600 KB Output is correct
38 Correct 11 ms 344 KB Output is correct
39 Correct 11 ms 600 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 18 ms 444 KB Output is correct
8 Correct 9 ms 344 KB Output is correct
9 Correct 19 ms 600 KB Output is correct
10 Correct 26 ms 600 KB Output is correct
11 Correct 22 ms 596 KB Output is correct
12 Correct 17 ms 424 KB Output is correct
13 Correct 31 ms 444 KB Output is correct
14 Correct 25 ms 848 KB Output is correct
15 Correct 18 ms 600 KB Output is correct
16 Correct 20 ms 600 KB Output is correct
17 Correct 18 ms 600 KB Output is correct
18 Correct 20 ms 420 KB Output is correct
19 Correct 21 ms 440 KB Output is correct
20 Correct 22 ms 424 KB Output is correct
21 Correct 24 ms 444 KB Output is correct
22 Correct 28 ms 692 KB Output is correct
23 Correct 22 ms 692 KB Output is correct
24 Correct 18 ms 852 KB Output is correct
25 Correct 11 ms 424 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 23 ms 592 KB Output is correct
28 Correct 23 ms 592 KB Output is correct
29 Correct 24 ms 592 KB Output is correct
30 Correct 26 ms 444 KB Output is correct
31 Correct 27 ms 676 KB Output is correct
32 Correct 22 ms 596 KB Output is correct
33 Correct 30 ms 680 KB Output is correct
34 Correct 24 ms 592 KB Output is correct
35 Correct 26 ms 448 KB Output is correct
36 Correct 23 ms 440 KB Output is correct
37 Correct 26 ms 596 KB Output is correct
38 Correct 28 ms 684 KB Output is correct
39 Correct 24 ms 600 KB Output is correct
40 Correct 25 ms 852 KB Output is correct
41 Correct 22 ms 692 KB Output is correct
42 Correct 21 ms 600 KB Output is correct
43 Correct 5 ms 344 KB Output is correct
44 Correct 22 ms 444 KB Output is correct
45 Correct 18 ms 600 KB Output is correct
46 Correct 14 ms 440 KB Output is correct
47 Correct 13 ms 600 KB Output is correct
48 Correct 13 ms 452 KB Output is correct