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Submission #1073033

# Submission time Handle Problem Language Result Execution time Memory
1073033 2024-08-24T08:48:09 Z Ignut Counting Mushrooms (IOI20_mushrooms) C++17
0 / 100
 83 ms 932 KB 
// Ignut

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;

mt19937 rnd(11223344);

int use_machine(vector<int> x);

int count_mushrooms(int n) {
    int res = 1;
    vector<int> A = {0}, B = {};
    vector<int> vec;
    for (int i = 1; i < n; i ++) vec.push_back(i);
    shuffle(vec.begin(), vec.end(), rnd);

    int firstA = 0, secondA = -1;
    // vector<int> vec;
    // for (int i = 1; i < n; i ++) vec.push_back(i);
    while (vec.size() > 1) {
        // if (max(A.size(), B.size()) >= 150) break;

        int u = vec.back(); vec.pop_back();
        int v = vec.back(); vec.pop_back();
        if (secondA != -1) {
            int val = use_machine({firstA, u, secondA, v});
            if (val == 0) {
                res += 2;
                A.push_back(u); A.push_back(v);
            }
            else if (val == 1) {
                res ++;
                A.push_back(u); B.push_back(v);
            }
            else if (val == 2) {
                res ++;
                A.push_back(v); B.push_back(u);
            }
            else {
                B.push_back(u), B.push_back(v);
            }
            continue; 
        }
        int val = use_machine({u, firstA, v});
        if (val == 0) {
            secondA = u;
            res += 2;
            A.push_back(u), A.push_back(v);
        }
        else if (val == 1) {
            res ++;
            val = use_machine({firstA, u});
            if (val == 0) {
                secondA = u;
                A.push_back(u), B.push_back(v);
            }
            else {
                secondA = v;
                A.push_back(v), B.push_back(u);
            }
        }
        else {
            B.push_back(u), B.push_back(v);
        }
    }

    // ============================================================= //

    // int Q = 200;
    // for (int i = 0; i < Q; i ++) {
    //     if (vec.empty()) {
    //         return res;
    //     }
    //     int v = vec.back(); vec.pop_back();
    //     if (use_machine({0, v}) == 0) {
    //         res ++;
    //         A.push_back(v);
    //     }
    //     else {
    //         B.push_back(v);
    //     }
    //     if (max(A.size(), B.size()) >= 130)
    //         break;
    // }
    
    
    while (!vec.empty()) {
        int ind = 1;
        vector<int> ask = {(A.size() >= B.size() ? A[0] : B[0])};
        while (ind < max(A.size(), B.size()) && !vec.empty()) {
            int v = vec.back(); vec.pop_back();
            ask.push_back(v);
            ask.push_back(A.size() >= B.size() ? A[ind] : B[ind]);
            ind ++;
        }
        int val = use_machine(ask);
        int cnt = ind - 1;
        if (A.size() >= B.size())
            res += cnt - val / 2;
        else
            res += val / 2;
    }
    return res;
}

Compilation message

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:93:20: warning: comparison of integer expressions of different signedness: 'int' and 'const long unsigned int' [-Wsign-compare]
   93 |         while (ind < max(A.size(), B.size()) && !vec.empty()) {
      |                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 100.0

# 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 1 ms 344 KB Output is correct
6 Partially correct 5 ms 340 KB Output is partially correct
7 Partially correct 61 ms 712 KB Output is partially correct
8 Partially correct 60 ms 640 KB Output is partially correct
9 Partially correct 65 ms 848 KB Output is partially correct
10 Partially correct 38 ms 636 KB Output is partially correct
11 Partially correct 67 ms 640 KB Output is partially correct
12 Partially correct 61 ms 852 KB Output is partially correct
13 Partially correct 58 ms 600 KB Output is partially correct
14 Partially correct 25 ms 344 KB Output is partially correct
15 Partially correct 56 ms 640 KB Output is partially correct
16 Partially correct 83 ms 892 KB Output is partially correct
17 Partially correct 25 ms 780 KB Output is partially correct
18 Partially correct 71 ms 600 KB Output is partially correct
19 Partially correct 62 ms 848 KB Output is partially correct
20 Partially correct 69 ms 848 KB Output is partially correct
21 Partially correct 69 ms 896 KB Output is partially correct
22 Partially correct 51 ms 600 KB Output is partially correct
23 Partially correct 53 ms 652 KB Output is partially correct
24 Partially correct 16 ms 344 KB Output is partially correct
25 Partially correct 64 ms 892 KB Output is partially correct
26 Partially correct 54 ms 848 KB Output is partially correct
27 Partially correct 48 ms 640 KB Output is partially correct
28 Partially correct 59 ms 640 KB Output is partially correct
29 Partially correct 71 ms 680 KB Output is partially correct
30 Partially correct 48 ms 892 KB Output is partially correct
31 Partially correct 47 ms 640 KB Output is partially correct
32 Partially correct 62 ms 848 KB Output is partially correct
33 Partially correct 56 ms 896 KB Output is partially correct
34 Partially correct 51 ms 908 KB Output is partially correct
35 Partially correct 67 ms 600 KB Output is partially correct
36 Partially correct 80 ms 640 KB Output is partially correct
37 Partially correct 62 ms 848 KB Output is partially correct
38 Partially correct 53 ms 632 KB Output is partially correct
39 Partially correct 52 ms 632 KB Output is partially correct
40 Partially correct 48 ms 844 KB Output is partially correct
41 Partially correct 62 ms 600 KB Output is partially correct
42 Partially correct 70 ms 640 KB Output is partially correct
43 Partially correct 61 ms 652 KB Output is partially correct
44 Partially correct 42 ms 632 KB Output is partially correct
45 Partially correct 71 ms 600 KB Output is partially correct
46 Partially correct 65 ms 656 KB Output is partially correct
47 Partially correct 51 ms 680 KB Output is partially correct
48 Partially correct 39 ms 892 KB Output is partially correct
49 Partially correct 61 ms 848 KB Output is partially correct
50 Partially correct 60 ms 932 KB Output is partially correct
51 Partially correct 62 ms 900 KB Output is partially correct
52 Partially correct 45 ms 848 KB Output is partially correct
53 Partially correct 51 ms 684 KB Output is partially correct
54 Partially correct 64 ms 680 KB Output is partially correct
55 Partially correct 55 ms 892 KB Output is partially correct
56 Partially correct 68 ms 636 KB Output is partially correct
57 Partially correct 56 ms 680 KB Output is partially correct
58 Partially correct 55 ms 636 KB Output is partially correct
59 Partially correct 56 ms 640 KB Output is partially correct
60 Partially correct 59 ms 632 KB Output is partially correct
61 Partially correct 55 ms 896 KB Output is partially correct
62 Incorrect 0 ms 428 KB Too small array for query.
63 Halted 0 ms 0 KB -