oj.uz

Submission #1032582

# Submission time Handle Problem Language Result Execution time Memory
1032582 2024-07-24T03:15:27 Z sleepntsheep Counting Mushrooms (IOI20_mushrooms) C++17
56.6416 / 100
 7 ms 600 KB 
#include "mushrooms.h"
#include <cassert>

int count_mushrooms(int n) {
    if (n <= 227) {
        int count = 1, cur = 0;
        for (int i = 1; i < n; ++i) {
            cur ^= (use_machine({i - 1, i}));
            count += !cur;
        }
        return count;
    }

	std::vector<int> A = {0}, B;
    int count = 1;

    int X = 200;

	for (int cur = 0, i = 1; i < X; i++) {
        cur ^= use_machine({i - 1, i});
        if (cur == 0)
            ++count, A.push_back(i);
        else
            B.push_back(i);
    }

    int amogus = std::max(A.size(), B.size());
    int chosen = A.size() >= B.size() ? 0 : 1;

    int l = X;
    while (l < n) {
        int r = std::min(n, l + amogus - 1) - 1;

        std::vector<int> m;

        if (0 == chosen) {
            m = {A[0]};
            for (int j = l, k = 1; j <= r; ++j, ++k) {
                m.push_back(j);
                assert(k < A.size());
                m.push_back(A[k]);
            }
            count += (r - l + 1) - use_machine(m) / 2;
        } else {
            m = {B[0]};
            for (int j = l, k = 1; j <= r; ++j, ++k) {
                m.push_back(j);
                assert(k < B.size());
                m.push_back(B[k]);
            }
            count += use_machine(m) / 2;
        }

        l = r + 1;
    }


	return count;
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from mushrooms.cpp:2:
mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:40:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |                 assert(k < A.size());
      |                        ~~^~~~~~~~~~
mushrooms.cpp:48:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |                 assert(k < B.size());
      |                        ~~^~~~~~~~~~

Subtask #1
56.6416 / 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 Correct 1 ms 432 KB Output is correct
7 Partially correct 4 ms 344 KB Output is partially correct
8 Partially correct 4 ms 344 KB Output is partially correct
9 Partially correct 4 ms 344 KB Output is partially correct
10 Partially correct 5 ms 344 KB Output is partially correct
11 Partially correct 7 ms 344 KB Output is partially correct
12 Partially correct 4 ms 344 KB Output is partially correct
13 Partially correct 3 ms 344 KB Output is partially correct
14 Partially correct 4 ms 340 KB Output is partially correct
15 Partially correct 7 ms 344 KB Output is partially correct
16 Partially correct 4 ms 344 KB Output is partially correct
17 Partially correct 3 ms 344 KB Output is partially correct
18 Partially correct 4 ms 344 KB Output is partially correct
19 Partially correct 4 ms 344 KB Output is partially correct
20 Partially correct 3 ms 428 KB Output is partially correct
21 Partially correct 5 ms 344 KB Output is partially correct
22 Partially correct 6 ms 344 KB Output is partially correct
23 Partially correct 4 ms 344 KB Output is partially correct
24 Partially correct 4 ms 600 KB Output is partially correct
25 Partially correct 4 ms 344 KB Output is partially correct
26 Partially correct 5 ms 344 KB Output is partially correct
27 Partially correct 4 ms 344 KB Output is partially correct
28 Partially correct 4 ms 344 KB Output is partially correct
29 Partially correct 5 ms 344 KB Output is partially correct
30 Partially correct 4 ms 344 KB Output is partially correct
31 Partially correct 7 ms 344 KB Output is partially correct
32 Partially correct 4 ms 344 KB Output is partially correct
33 Partially correct 4 ms 344 KB Output is partially correct
34 Partially correct 4 ms 344 KB Output is partially correct
35 Partially correct 4 ms 344 KB Output is partially correct
36 Partially correct 4 ms 344 KB Output is partially correct
37 Partially correct 4 ms 344 KB Output is partially correct
38 Partially correct 4 ms 344 KB Output is partially correct
39 Partially correct 4 ms 344 KB Output is partially correct
40 Partially correct 5 ms 344 KB Output is partially correct
41 Partially correct 4 ms 344 KB Output is partially correct
42 Partially correct 4 ms 344 KB Output is partially correct
43 Partially correct 4 ms 344 KB Output is partially correct
44 Partially correct 4 ms 600 KB Output is partially correct
45 Partially correct 4 ms 344 KB Output is partially correct
46 Partially correct 4 ms 432 KB Output is partially correct
47 Partially correct 5 ms 340 KB Output is partially correct
48 Partially correct 4 ms 344 KB Output is partially correct
49 Partially correct 4 ms 344 KB Output is partially correct
50 Partially correct 4 ms 344 KB Output is partially correct
51 Partially correct 4 ms 344 KB Output is partially correct
52 Partially correct 6 ms 344 KB Output is partially correct
53 Partially correct 6 ms 344 KB Output is partially correct
54 Partially correct 4 ms 344 KB Output is partially correct
55 Partially correct 7 ms 344 KB Output is partially correct
56 Partially correct 4 ms 344 KB Output is partially correct
57 Partially correct 4 ms 344 KB Output is partially correct
58 Partially correct 5 ms 344 KB Output is partially correct
59 Partially correct 4 ms 344 KB Output is partially correct
60 Partially correct 5 ms 344 KB Output is partially correct
61 Partially correct 6 ms 344 KB Output is partially correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 0 ms 344 KB Output is correct
67 Correct 0 ms 344 KB Output is correct
68 Correct 1 ms 344 KB Output is correct
69 Correct 1 ms 344 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Correct 0 ms 344 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 344 KB Output is correct
76 Correct 0 ms 344 KB Output is correct
77 Correct 0 ms 344 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 0 ms 344 KB Output is correct
81 Correct 0 ms 344 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 0 ms 344 KB Output is correct
86 Correct 0 ms 344 KB Output is correct
87 Correct 1 ms 344 KB Output is correct
88 Correct 0 ms 344 KB Output is correct
89 Correct 0 ms 344 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct