oj.uz

Submission #944662

# Submission time Handle Problem Language Result Execution time Memory
944662 2024-03-13T02:49:05 Z GrandTiger1729 Bomb (IZhO17_bomb) C++17
89 / 100
 144 ms 35508 KB 
#include <bits/stdc++.h>
using namespace std;

const int INF = 1e9;
int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n, m;
    cin >> n >> m;
    vector<string> g(n);
    for (int i = 0; i < n; i++)
    {
        cin >> g[i];
    }
    vector<int> res(n, INF);
    auto solve = [&]()
    {
        vector<vector<int>> rr(n, vector<int>(m));
        for (int i = 0; i < n; i++)
        {
            int cur = m;
            for (int j = m - 1; j >= 0; j--)
            {
                if (g[i][j] == '0')
                {
                    cur = j;
                }
                rr[i][j] = cur;
            }
        }
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < m; j++)
            {
                if (g[i][j] == '1' && (i == 0 || g[i - 1][j] == '0') && (j == 0 || g[i][j - 1] == '0'))
                {
                    int k = i, cur = INF;
                    while (k < n && k - i < res.size() && g[k][j] == '1')
                    {
                        cur = min(cur, rr[k][j] - j);
                        res[k - i] = min(res[k - i], cur);
                        k++;
                    }
                    res.resize(k - i);
                }
            }
        }
    };
    for (int tt = 0; tt < 2; tt++)
    {
        solve();
        reverse(g.begin(), g.end());
        solve();
        for (int i = 0; i < n; i++)
        {
            reverse(g[i].begin(), g[i].end());
        }
    }
    int ans = 0;
    for (int i = 0; i < res.size(); i++)
    {
        ans = max(ans, (i + 1) * res[i]);
    }
    cout << ans << '\n';
    return 0;
}

Compilation message

bomb.cpp: In lambda function:
bomb.cpp:38:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |                     while (k < n && k - i < res.size() && g[k][j] == '1')
      |                                     ~~~~~~^~~~~~~~~~~~
bomb.cpp: In function 'int main()':
bomb.cpp:60:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |     for (int i = 0; i < res.size(); i++)
      |                     ~~^~~~~~~~~~~~

Subtask #1
89.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 460 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Incorrect 0 ms 460 KB Output isn't correct
27 Incorrect 2 ms 924 KB Output isn't correct
28 Correct 2 ms 1112 KB Output is correct
29 Correct 2 ms 1132 KB Output is correct
30 Correct 3 ms 1600 KB Output is correct
31 Correct 3 ms 1368 KB Output is correct
32 Correct 3 ms 1404 KB Output is correct
33 Correct 4 ms 1648 KB Output is correct
34 Correct 2 ms 920 KB Output is correct
35 Correct 3 ms 1632 KB Output is correct
36 Incorrect 4 ms 1636 KB Output isn't correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 112 ms 35068 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Incorrect 13 ms 4852 KB Output isn't correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 129 ms 35048 KB Output is correct
44 Correct 4 ms 1632 KB Output is correct
45 Correct 113 ms 35412 KB Output is correct
46 Correct 125 ms 35076 KB Output is correct
47 Correct 114 ms 35100 KB Output is correct
48 Correct 105 ms 35336 KB Output is correct
49 Incorrect 122 ms 35508 KB Output isn't correct
50 Correct 110 ms 35100 KB Output is correct
51 Correct 104 ms 35072 KB Output is correct
52 Correct 113 ms 35140 KB Output is correct
53 Correct 105 ms 35112 KB Output is correct
54 Correct 108 ms 35148 KB Output is correct
55 Correct 103 ms 35148 KB Output is correct
56 Correct 141 ms 35096 KB Output is correct
57 Correct 104 ms 35060 KB Output is correct
58 Correct 100 ms 35096 KB Output is correct
59 Correct 101 ms 35072 KB Output is correct
60 Incorrect 144 ms 35060 KB Output isn't correct
61 Incorrect 117 ms 35100 KB Output isn't correct
62 Incorrect 118 ms 35116 KB Output isn't correct
63 Incorrect 121 ms 35100 KB Output isn't correct
64 Incorrect 105 ms 35008 KB Output isn't correct
65 Correct 106 ms 35040 KB Output is correct
66 Correct 108 ms 35092 KB Output is correct
67 Correct 106 ms 35112 KB Output is correct
68 Correct 125 ms 35104 KB Output is correct
69 Correct 110 ms 35360 KB Output is correct
70 Correct 62 ms 22672 KB Output is correct
71 Correct 101 ms 35100 KB Output is correct
72 Correct 122 ms 35068 KB Output is correct
73 Correct 105 ms 35232 KB Output is correct
74 Correct 107 ms 35100 KB Output is correct
75 Correct 101 ms 35096 KB Output is correct
76 Correct 106 ms 35044 KB Output is correct
77 Correct 101 ms 35112 KB Output is correct
78 Correct 104 ms 35040 KB Output is correct
79 Correct 102 ms 35060 KB Output is correct
80 Correct 110 ms 35064 KB Output is correct
81 Correct 102 ms 35088 KB Output is correct
82 Correct 105 ms 35156 KB Output is correct
83 Correct 108 ms 35080 KB Output is correct
84 Correct 102 ms 35112 KB Output is correct
85 Correct 101 ms 35088 KB Output is correct
86 Correct 119 ms 35064 KB Output is correct
87 Correct 104 ms 35148 KB Output is correct
88 Correct 110 ms 35204 KB Output is correct
89 Correct 108 ms 35008 KB Output is correct
90 Correct 65 ms 22800 KB Output is correct
91 Correct 106 ms 35064 KB Output is correct
92 Correct 105 ms 35100 KB Output is correct
93 Correct 111 ms 35060 KB Output is correct
94 Correct 101 ms 35248 KB Output is correct
95 Correct 127 ms 35064 KB Output is correct
96 Correct 107 ms 35100 KB Output is correct
97 Correct 110 ms 31768 KB Output is correct
98 Correct 117 ms 32024 KB Output is correct
99 Correct 103 ms 31724 KB Output is correct
100 Correct 108 ms 31868 KB Output is correct