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Submission #1059517

# Submission time Handle Problem Language Result Execution time Memory
1059517 2024-08-15T04:25:44 Z shiomusubi496 Rarest Insects (IOI22_insects) C++17
99.89 / 100
 42 ms 424 KB 
#include "insects.h"
#include <bits/stdc++.h>

#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); ++i)
#define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define rrep2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); --i)

#define all(v) begin(v), end(v)
#define rall(v) rbegin(v), rend(v)

using namespace std;

using ll = long long;

template<class T, class U> bool chmin(T& a, const U& b) { return a > b ? a = b, true : false; }
template<class T, class U> bool chmax(T& a, const U& b) { return a < b ? a = b, true : false; }

mt19937 mt(random_device{}());

int min_cardinality(int N) {
    int nk = 0;
    vector<bool> f1(N, false), f2(N, false);
    {
        vector<bool> used(N);
        rep (i, N) {
            move_inside(i);
            if (press_button() == 2) move_outside(i);
            else ++nk, used[i] = true;
        }
        f1 = used;
    }
    int ok = 1, ng = N / nk + 1;
    while (ng - ok > 1) {
        int mid = (ok + ng) / 2;
        vector<bool> used(N), used2(N);
        int cnt = 0, lt = -1;
        rep (i, N) {
            if (f1[i]) {
                ++cnt;
                continue;
            }
            if (f2[i]) continue;
            move_inside(i);
            int t = press_button();
            if (t > mid) move_outside(i), used2[i] = true;
            else {
                cnt++, used[i] = true;
            }
            lt = t;
        }
        if (cnt == nk * mid) {
            ok = mid;
            rep (i, N) {
                if (used[i]) f1[i] = true;
            }
        }
        else {
            rep (i, N) {
                if (used2[i]) f2[i] = true;
                if (used[i]) move_outside(i);
            }
            ng = mid;
        }
    }
    return ok;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:37:22: warning: variable 'lt' set but not used [-Wunused-but-set-variable]
   37 |         int cnt = 0, lt = -1;
      |                      ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 356 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 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 344 KB Output is correct
11 Correct 2 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 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 4 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 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 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 356 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 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 344 KB Output is correct
11 Correct 2 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 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 4 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 ms 344 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 17 ms 344 KB Output is correct
24 Correct 5 ms 356 KB Output is correct
25 Correct 13 ms 356 KB Output is correct
26 Correct 15 ms 344 KB Output is correct
27 Correct 17 ms 344 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 16 ms 344 KB Output is correct
30 Correct 13 ms 344 KB Output is correct
31 Correct 13 ms 344 KB Output is correct
32 Correct 17 ms 344 KB Output is correct
33 Correct 13 ms 344 KB Output is correct
34 Correct 16 ms 344 KB Output is correct
35 Correct 11 ms 344 KB Output is correct
36 Correct 15 ms 344 KB Output is correct
37 Correct 16 ms 344 KB Output is correct
38 Correct 10 ms 344 KB Output is correct
39 Correct 12 ms 344 KB Output is correct
40 Correct 8 ms 420 KB Output is correct
41 Correct 3 ms 344 KB Output is correct

Subtask #3
74.89 / 75.0

# 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 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 31 ms 344 KB Output is correct
8 Correct 11 ms 344 KB Output is correct
9 Correct 30 ms 344 KB Output is correct
10 Correct 23 ms 344 KB Output is correct
11 Correct 30 ms 344 KB Output is correct
12 Correct 12 ms 344 KB Output is correct
13 Correct 24 ms 344 KB Output is correct
14 Correct 25 ms 344 KB Output is correct
15 Correct 28 ms 356 KB Output is correct
16 Correct 32 ms 356 KB Output is correct
17 Correct 29 ms 356 KB Output is correct
18 Correct 26 ms 356 KB Output is correct
19 Partially correct 26 ms 356 KB Output is partially correct
20 Correct 26 ms 356 KB Output is correct
21 Correct 29 ms 424 KB Output is correct
22 Correct 32 ms 356 KB Output is correct
23 Correct 22 ms 356 KB Output is correct
24 Correct 22 ms 356 KB Output is correct
25 Correct 15 ms 356 KB Output is correct
26 Correct 9 ms 356 KB Output is correct
27 Correct 26 ms 356 KB Output is correct
28 Correct 20 ms 356 KB Output is correct
29 Partially correct 25 ms 344 KB Output is partially correct
30 Partially correct 23 ms 344 KB Output is partially correct
31 Correct 31 ms 416 KB Output is correct
32 Correct 29 ms 344 KB Output is correct
33 Correct 22 ms 344 KB Output is correct
34 Correct 36 ms 344 KB Output is correct
35 Partially correct 39 ms 344 KB Output is partially correct
36 Partially correct 26 ms 344 KB Output is partially correct
37 Correct 21 ms 420 KB Output is correct
38 Correct 25 ms 344 KB Output is correct
39 Correct 19 ms 344 KB Output is correct
40 Correct 23 ms 344 KB Output is correct
41 Partially correct 35 ms 344 KB Output is partially correct
42 Partially correct 42 ms 344 KB Output is partially correct
43 Correct 7 ms 344 KB Output is correct
44 Correct 13 ms 344 KB Output is correct
45 Correct 17 ms 344 KB Output is correct
46 Correct 13 ms 344 KB Output is correct
47 Correct 19 ms 344 KB Output is correct
48 Correct 11 ms 344 KB Output is correct