oj.uz

Submission #519059

# Submission time Handle Problem Language Result Execution time Memory
519059 2022-01-25T14:18:27 Z Dasha_Gnedko Bomb (IZhO17_bomb) C++17
9 / 100
 1000 ms 60972 KB 
#include <bits/stdc++.h>

//#include <ext/pb_ds/detail/standard_policies.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")

using namespace std;

//using namespace __gnu_pbds;
//template <typename T> using ordered_set = tree <T, null_type, less < T >, rb_tree_tag, tree_order_statistics_node_update>;

mt19937 gen(time(0));

#define ll long long
#define ld long double
#define pb push_back
#define F first
#define S second
#define TIME clock() * 1.0 / CLOCKS_PER_SEC
#define sz(a) int32_t(a.size())
#define endl '\n'
//#define int long long

const int N = 3100;
const int M = 31;
const int mod = 1e9 + 7;
const ll inf = 1e18 + 7;

int a[N][N], cnt[N][N], n, m;

bool good(int x, int y)
{
    for(int i = 0; i < n; i++)
        for(int j = 0; j < m; j++)
            cnt[i][j] = 0;
    for(int i = 0; i + x <= n; i++)
        for(int j = 0; j + y <= m; j++)
        {
            int fl = 0;
            for(int x1 = i; x1 < i + x; x1++)
            {
                for(int y1 = j; y1 < j + y; y1++)
                {
                    if (!a[x1][y1])
                    {
                        fl = 1;
                        break;
                    }
                }
                if (fl) break;
            }
            if (fl) continue;
            for(int x1 = i; x1 < i + x; x1++)
                for(int y1 = j; y1 < j + y; y1++)
                    cnt[x1][y1] = 1;
        }
    for(int i = 0; i < n; i++)
        for(int j = 0; j < m; j++)
            if (a[i][j] && !cnt[i][j]) return 0;
    return 1;
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
#endif // LOCAL

    cin >> n >> m;
    for(int i = 0; i < n; i++)
        for(int j = 0; j < m; j++)
        {
            char c;
            cin >> c;
            a[i][j] = int32_t(c - '0');
        }
    int x = m, y = n, ls = 0;
    for(int i = 0; i < n; i++)
    {
        ls = -1;
        for(int j = 0; j < m; j++)
        {
            if (!a[i][j])
            {
                if (j && a[i][j - 1]) x = min(x, j - ls - 1);
                ls = j;
            }
        }
        if (ls != m - 1) x = min(x, m - ls - 1);
    }
    for(int j = 0; j < m; j++)
    {
        ls = -1;
        for(int i = 0; i < n; i++)
        {
            if (!a[i][j])
            {
                if (i && a[i - 1][j]) y = min(y, i - ls - 1);
                ls = i;
            }
        }
        if (ls != n - 1) y = min(y, n - ls - 1);
    }
    int ans = 0;
    for(int i = 1; i <= n; i++)
    {
        for(int j = m; j >= 1; j--)
        {
            if (!good(i, j)) continue;
            ans = max(ans, i * j);
            if (i * j > x * y)
            {
                cout << -1;
                return 0;
            }
            break;
        }
    }
    if (ans < x * y) return 1;
    cout << ans;
}

Subtask #1
9.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Execution timed out 1087 ms 20428 KB Time limit exceeded
4 Execution timed out 1086 ms 20428 KB Time limit exceeded
5 Correct 381 ms 336 KB Output is correct
6 Correct 120 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
9 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
10 Runtime error 1 ms 332 KB Execution failed because the return code was nonzero
11 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
12 Runtime error 0 ms 332 KB Execution failed because the return code was nonzero
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 452 KB Output is correct
15 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
16 Correct 2 ms 460 KB Output is correct
17 Correct 33 ms 844 KB Output is correct
18 Runtime error 16 ms 844 KB Execution failed because the return code was nonzero
19 Runtime error 123 ms 1100 KB Execution failed because the return code was nonzero
20 Runtime error 134 ms 1100 KB Execution failed because the return code was nonzero
21 Runtime error 14 ms 716 KB Execution failed because the return code was nonzero
22 Runtime error 38 ms 972 KB Execution failed because the return code was nonzero
23 Runtime error 687 ms 1100 KB Execution failed because the return code was nonzero
24 Runtime error 91 ms 972 KB Execution failed because the return code was nonzero
25 Runtime error 984 ms 1100 KB Execution failed because the return code was nonzero
26 Execution timed out 1084 ms 1100 KB Time limit exceeded
27 Execution timed out 1097 ms 3276 KB Time limit exceeded
28 Execution timed out 1092 ms 3404 KB Time limit exceeded
29 Execution timed out 1092 ms 4428 KB Time limit exceeded
30 Execution timed out 1099 ms 5196 KB Time limit exceeded
31 Execution timed out 1099 ms 4044 KB Time limit exceeded
32 Execution timed out 1090 ms 4684 KB Time limit exceeded
33 Execution timed out 1094 ms 5452 KB Time limit exceeded
34 Execution timed out 1096 ms 3788 KB Time limit exceeded
35 Execution timed out 1092 ms 5452 KB Time limit exceeded
36 Execution timed out 1092 ms 5452 KB Time limit exceeded
37 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
38 Execution timed out 1092 ms 60852 KB Time limit exceeded
39 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
40 Execution timed out 1093 ms 13368 KB Time limit exceeded
41 Runtime error 1 ms 460 KB Execution failed because the return code was nonzero
42 Execution timed out 1089 ms 1100 KB Time limit exceeded
43 Execution timed out 1089 ms 60852 KB Time limit exceeded
44 Execution timed out 1091 ms 5452 KB Time limit exceeded
45 Execution timed out 1094 ms 60904 KB Time limit exceeded
46 Execution timed out 1089 ms 60900 KB Time limit exceeded
47 Execution timed out 1094 ms 60956 KB Time limit exceeded
48 Execution timed out 1099 ms 60868 KB Time limit exceeded
49 Execution timed out 1092 ms 60944 KB Time limit exceeded
50 Execution timed out 1094 ms 60856 KB Time limit exceeded
51 Execution timed out 1082 ms 60904 KB Time limit exceeded
52 Execution timed out 1089 ms 60852 KB Time limit exceeded
53 Execution timed out 1096 ms 60964 KB Time limit exceeded
54 Execution timed out 1094 ms 60924 KB Time limit exceeded
55 Execution timed out 1097 ms 60880 KB Time limit exceeded
56 Execution timed out 1094 ms 60848 KB Time limit exceeded
57 Execution timed out 1100 ms 60868 KB Time limit exceeded
58 Execution timed out 1093 ms 60868 KB Time limit exceeded
59 Execution timed out 1096 ms 60920 KB Time limit exceeded
60 Execution timed out 1086 ms 60872 KB Time limit exceeded
61 Execution timed out 1095 ms 60952 KB Time limit exceeded
62 Execution timed out 1059 ms 60972 KB Time limit exceeded
63 Execution timed out 1079 ms 60848 KB Time limit exceeded
64 Execution timed out 1098 ms 60944 KB Time limit exceeded
65 Execution timed out 1080 ms 60868 KB Time limit exceeded
66 Execution timed out 1097 ms 60868 KB Time limit exceeded
67 Execution timed out 1078 ms 60948 KB Time limit exceeded
68 Execution timed out 1089 ms 60848 KB Time limit exceeded
69 Execution timed out 1093 ms 60948 KB Time limit exceeded
70 Execution timed out 1095 ms 47556 KB Time limit exceeded
71 Execution timed out 1096 ms 60848 KB Time limit exceeded
72 Execution timed out 1085 ms 60852 KB Time limit exceeded
73 Execution timed out 1096 ms 60912 KB Time limit exceeded
74 Execution timed out 1098 ms 60868 KB Time limit exceeded
75 Execution timed out 1100 ms 60952 KB Time limit exceeded
76 Execution timed out 1094 ms 60964 KB Time limit exceeded
77 Execution timed out 1049 ms 60868 KB Time limit exceeded
78 Execution timed out 1081 ms 60972 KB Time limit exceeded
79 Execution timed out 1089 ms 60892 KB Time limit exceeded
80 Execution timed out 1103 ms 60856 KB Time limit exceeded
81 Execution timed out 1087 ms 60920 KB Time limit exceeded
82 Execution timed out 1097 ms 60884 KB Time limit exceeded
83 Execution timed out 1088 ms 60868 KB Time limit exceeded
84 Execution timed out 1104 ms 60868 KB Time limit exceeded
85 Execution timed out 1096 ms 60868 KB Time limit exceeded
86 Execution timed out 1099 ms 60868 KB Time limit exceeded
87 Execution timed out 1095 ms 60868 KB Time limit exceeded
88 Execution timed out 1091 ms 60948 KB Time limit exceeded
89 Execution timed out 1081 ms 60944 KB Time limit exceeded
90 Execution timed out 1083 ms 47684 KB Time limit exceeded
91 Execution timed out 1089 ms 60872 KB Time limit exceeded
92 Execution timed out 1093 ms 60872 KB Time limit exceeded
93 Execution timed out 1096 ms 60868 KB Time limit exceeded
94 Execution timed out 1081 ms 60868 KB Time limit exceeded
95 Execution timed out 1096 ms 60868 KB Time limit exceeded
96 Execution timed out 1090 ms 60892 KB Time limit exceeded
97 Execution timed out 1089 ms 60868 KB Time limit exceeded
98 Execution timed out 1097 ms 60852 KB Time limit exceeded
99 Execution timed out 1062 ms 60956 KB Time limit exceeded
100 Execution timed out 1098 ms 60868 KB Time limit exceeded