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Submission #1104046

# Submission time Handle Problem Language Result Execution time Memory
1104046 2024-10-22T15:44:48 Z vjudge1 Counting Mushrooms (IOI20_mushrooms) C++14
80.1418 / 100
 7 ms 584 KB 
#include "mushrooms.h"

using namespace std;

int count_mushrooms(int n) {
    vector<int> detected[2];

    detected[0].push_back(0);

    auto sz = [&] {return max(detected[0].size(), detected[1].size());};

    int i;
    for(i = 1; i < n && sz() < 2; i++) {
        int res = use_machine({0, i});
        detected[res].push_back(i); 
    }


    int k = 130;
    int t = (detected[1].size() == 2);
    for(; i < n && sz() < k; i += 2) {
        int res;
        if(i+1 < n)
            res = use_machine({detected[t][0], i, detected[t][1], i+1});
        else
            res = use_machine({detected[t][0], i, detected[t][1]});

        int not_t = (res & 2) ? 1 : 0;
        detected[t ^ not_t].push_back(i);

        if(i+1 < n) {
            not_t = res & 1; 
            detected[t ^ not_t].push_back(i+1);
        }
    }

    int more_zeros = 0;

    for(; i < n; ) {
        int size = sz();
        int t = (detected[1].size() == sz()); 
        int rem = min(size, n - i); 

        vector<int> tmp;
        for(int j = 0; j < rem; j++) {
            tmp.push_back(detected[t][j]);
            tmp.push_back(i+j); 
        }

        int res = use_machine(tmp);
		if (res % 2) res++;

        more_zeros += (t ? res / 2 : rem - res / 2);

        i += rem; 
    }

    return detected[0].size() + more_zeros;
}

Compilation message

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:21:25: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare]
   21 |     for(; i < n && sz() < k; i += 2) {
      |                    ~~~~~^~~

Subtask #1
80.1418 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 2 ms 336 KB Output is correct
7 Correct 4 ms 336 KB Output is correct
8 Correct 4 ms 336 KB Output is correct
9 Correct 4 ms 336 KB Output is correct
10 Partially correct 6 ms 336 KB Output is partially correct
11 Partially correct 6 ms 336 KB Output is partially correct
12 Partially correct 5 ms 336 KB Output is partially correct
13 Correct 6 ms 336 KB Output is correct
14 Correct 3 ms 336 KB Output is correct
15 Partially correct 5 ms 336 KB Output is partially correct
16 Partially correct 5 ms 440 KB Output is partially correct
17 Correct 3 ms 336 KB Output is correct
18 Correct 4 ms 336 KB Output is correct
19 Partially correct 5 ms 508 KB Output is partially correct
20 Partially correct 4 ms 336 KB Output is partially correct
21 Partially correct 4 ms 336 KB Output is partially correct
22 Partially correct 5 ms 336 KB Output is partially correct
23 Partially correct 4 ms 336 KB Output is partially correct
24 Correct 3 ms 336 KB Output is correct
25 Partially correct 5 ms 336 KB Output is partially correct
26 Partially correct 4 ms 336 KB Output is partially correct
27 Partially correct 4 ms 336 KB Output is partially correct
28 Partially correct 7 ms 336 KB Output is partially correct
29 Partially correct 5 ms 336 KB Output is partially correct
30 Partially correct 6 ms 336 KB Output is partially correct
31 Partially correct 4 ms 336 KB Output is partially correct
32 Partially correct 4 ms 440 KB Output is partially correct
33 Partially correct 4 ms 440 KB Output is partially correct
34 Partially correct 7 ms 436 KB Output is partially correct
35 Partially correct 5 ms 336 KB Output is partially correct
36 Partially correct 6 ms 336 KB Output is partially correct
37 Partially correct 4 ms 336 KB Output is partially correct
38 Partially correct 4 ms 336 KB Output is partially correct
39 Partially correct 5 ms 504 KB Output is partially correct
40 Partially correct 4 ms 336 KB Output is partially correct
41 Partially correct 4 ms 336 KB Output is partially correct
42 Partially correct 4 ms 336 KB Output is partially correct
43 Partially correct 5 ms 336 KB Output is partially correct
44 Partially correct 4 ms 444 KB Output is partially correct
45 Partially correct 4 ms 336 KB Output is partially correct
46 Partially correct 6 ms 504 KB Output is partially correct
47 Partially correct 4 ms 584 KB Output is partially correct
48 Partially correct 5 ms 440 KB Output is partially correct
49 Partially correct 4 ms 336 KB Output is partially correct
50 Partially correct 4 ms 336 KB Output is partially correct
51 Partially correct 4 ms 504 KB Output is partially correct
52 Partially correct 4 ms 336 KB Output is partially correct
53 Partially correct 6 ms 512 KB Output is partially correct
54 Partially correct 5 ms 336 KB Output is partially correct
55 Partially correct 4 ms 504 KB Output is partially correct
56 Partially correct 4 ms 336 KB Output is partially correct
57 Partially correct 4 ms 336 KB Output is partially correct
58 Partially correct 6 ms 336 KB Output is partially correct
59 Partially correct 5 ms 336 KB Output is partially correct
60 Partially correct 4 ms 336 KB Output is partially correct
61 Partially correct 5 ms 336 KB Output is partially correct
62 Correct 1 ms 336 KB Output is correct
63 Correct 0 ms 336 KB Output is correct
64 Correct 1 ms 336 KB Output is correct
65 Correct 1 ms 336 KB Output is correct
66 Correct 1 ms 336 KB Output is correct
67 Correct 0 ms 336 KB Output is correct
68 Correct 1 ms 336 KB Output is correct
69 Correct 0 ms 336 KB Output is correct
70 Correct 1 ms 336 KB Output is correct
71 Correct 0 ms 336 KB Output is correct
72 Correct 1 ms 336 KB Output is correct
73 Correct 0 ms 336 KB Output is correct
74 Correct 1 ms 336 KB Output is correct
75 Correct 1 ms 336 KB Output is correct
76 Correct 0 ms 336 KB Output is correct
77 Correct 0 ms 336 KB Output is correct
78 Correct 1 ms 336 KB Output is correct
79 Correct 0 ms 336 KB Output is correct
80 Correct 1 ms 504 KB Output is correct
81 Correct 1 ms 336 KB Output is correct
82 Correct 1 ms 336 KB Output is correct
83 Correct 1 ms 336 KB Output is correct
84 Correct 0 ms 336 KB Output is correct
85 Correct 1 ms 336 KB Output is correct
86 Correct 0 ms 336 KB Output is correct
87 Correct 1 ms 336 KB Output is correct
88 Correct 1 ms 336 KB Output is correct
89 Correct 0 ms 336 KB Output is correct
90 Correct 1 ms 336 KB Output is correct
91 Correct 1 ms 336 KB Output is correct