Submission #399975

# Submission time Handle Problem Language Result Execution time Memory
399975 2021-05-07T02:18:58 Z syl123456 Bomb (IZhO17_bomb) C++17
39 / 100
163 ms 56148 KB
#include <bits/stdc++.h>
#define all(i) (i).begin(), (i).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl
using namespace std;
template<typename T1, typename T2>
ostream& operator << (ostream &i, pair<T1, T2> j) {
    return i << j.first << ' ' << j.second;
}
template<typename T>
ostream& operator << (ostream &i, vector<T> j) {
    i << '{' << j.size() << ':';
    for (T ii : j) i << ' ' << ii;
    return i << '}';
}
typedef long long ll;
typedef pair<int, int> pi;
int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<string> v(n + 2, string(m + 2, '0'));
    for (int i = 1; i <= n; ++i) for (int j = 1; j <= m; ++j) cin >> v[i][j];
    vector<vector<int>> h(n + 2, vector<int>(m + 2, 0)), w(n + 2, vector<int>(m + 2, 0));
    int _h = n, _w = m;
    for (int i = n; i; --i) for (int j = m; j; --j) if (v[i][j] == '1') {
        h[i][j] = h[i + 1][j] + 1, w[i][j] = w[i][j + 1] + 1;
        if (v[i - 1][j] == '0') _h = min(_h, h[i][j]);
        if (v[i][j - 1] == '0') _w = min(_w, w[i][j]);
    }
    vector<int> lim(_h + 2, _w);
    for (int i = 1; i <= n; ++i) {
        pi pre(0, 0);
        for (int j = 1; j <= m + 1; ++j) {
            if (v[i - 1][j] == '0' && v[i][j - 1] == '0') {
                pre = pi(j, min(_h, h[i][j]));
                continue;
            }
            if (h[i][j] >= pre.second) continue;
            lim[h[i][j] + 1] = min(lim[h[i][j] + 1], j - pre.first);
            pre.second = h[i][j];
        }
    }
    int ans = 0;
    for (int i = 1; i <= _h; ++i) lim[i] = min(lim[i], lim[i - 1]), ans = max(ans, i * lim[i]);
    cout << ans;
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Incorrect 1 ms 204 KB Output isn't correct
9 Incorrect 1 ms 204 KB Output isn't correct
10 Correct 1 ms 208 KB Output is correct
11 Incorrect 1 ms 204 KB Output isn't correct
12 Incorrect 1 ms 204 KB Output isn't correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Incorrect 1 ms 204 KB Output isn't correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Incorrect 1 ms 332 KB Output isn't correct
20 Incorrect 1 ms 332 KB Output isn't correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Incorrect 1 ms 332 KB Output isn't correct
24 Incorrect 1 ms 332 KB Output isn't correct
25 Incorrect 1 ms 332 KB Output isn't correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 3 ms 972 KB Output is correct
28 Incorrect 3 ms 1356 KB Output isn't correct
29 Incorrect 4 ms 1484 KB Output isn't correct
30 Incorrect 5 ms 1996 KB Output isn't correct
31 Incorrect 4 ms 1688 KB Output isn't correct
32 Incorrect 6 ms 1700 KB Output isn't correct
33 Incorrect 6 ms 2124 KB Output isn't correct
34 Incorrect 3 ms 1100 KB Output isn't correct
35 Incorrect 5 ms 2124 KB Output isn't correct
36 Correct 6 ms 2124 KB Output is correct
37 Incorrect 1 ms 204 KB Output isn't correct
38 Correct 151 ms 55836 KB Output is correct
39 Incorrect 1 ms 204 KB Output isn't correct
40 Incorrect 21 ms 7280 KB Output isn't correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 145 ms 55876 KB Output is correct
44 Correct 7 ms 2124 KB Output is correct
45 Incorrect 151 ms 56148 KB Output isn't correct
46 Correct 147 ms 55876 KB Output is correct
47 Incorrect 147 ms 55896 KB Output isn't correct
48 Correct 141 ms 55880 KB Output is correct
49 Correct 154 ms 56000 KB Output is correct
50 Incorrect 145 ms 55908 KB Output isn't correct
51 Incorrect 150 ms 55936 KB Output isn't correct
52 Correct 142 ms 55920 KB Output is correct
53 Incorrect 143 ms 55864 KB Output isn't correct
54 Correct 137 ms 55932 KB Output is correct
55 Incorrect 136 ms 55892 KB Output isn't correct
56 Correct 151 ms 55896 KB Output is correct
57 Incorrect 159 ms 55872 KB Output isn't correct
58 Correct 136 ms 55856 KB Output is correct
59 Correct 135 ms 55876 KB Output is correct
60 Correct 145 ms 56048 KB Output is correct
61 Correct 148 ms 55876 KB Output is correct
62 Correct 149 ms 55924 KB Output is correct
63 Correct 152 ms 55864 KB Output is correct
64 Correct 140 ms 55988 KB Output is correct
65 Correct 140 ms 55892 KB Output is correct
66 Incorrect 163 ms 55932 KB Output isn't correct
67 Correct 145 ms 55880 KB Output is correct
68 Incorrect 147 ms 55876 KB Output isn't correct
69 Correct 148 ms 55876 KB Output is correct
70 Incorrect 86 ms 36036 KB Output isn't correct
71 Incorrect 135 ms 55820 KB Output isn't correct
72 Incorrect 137 ms 55928 KB Output isn't correct
73 Incorrect 135 ms 55876 KB Output isn't correct
74 Incorrect 135 ms 55872 KB Output isn't correct
75 Incorrect 139 ms 55904 KB Output isn't correct
76 Incorrect 147 ms 55924 KB Output isn't correct
77 Incorrect 138 ms 55924 KB Output isn't correct
78 Incorrect 135 ms 55872 KB Output isn't correct
79 Incorrect 132 ms 55852 KB Output isn't correct
80 Incorrect 136 ms 55932 KB Output isn't correct
81 Incorrect 130 ms 55876 KB Output isn't correct
82 Incorrect 138 ms 55876 KB Output isn't correct
83 Incorrect 137 ms 55876 KB Output isn't correct
84 Incorrect 130 ms 55920 KB Output isn't correct
85 Incorrect 137 ms 55880 KB Output isn't correct
86 Incorrect 147 ms 55920 KB Output isn't correct
87 Incorrect 138 ms 55876 KB Output isn't correct
88 Incorrect 137 ms 55916 KB Output isn't correct
89 Incorrect 148 ms 55940 KB Output isn't correct
90 Incorrect 87 ms 36020 KB Output isn't correct
91 Incorrect 139 ms 56020 KB Output isn't correct
92 Incorrect 142 ms 55964 KB Output isn't correct
93 Incorrect 147 ms 55876 KB Output isn't correct
94 Incorrect 142 ms 55856 KB Output isn't correct
95 Incorrect 138 ms 55832 KB Output isn't correct
96 Incorrect 139 ms 55980 KB Output isn't correct
97 Incorrect 147 ms 55844 KB Output isn't correct
98 Incorrect 139 ms 55912 KB Output isn't correct
99 Incorrect 139 ms 55916 KB Output isn't correct
100 Incorrect 152 ms 55928 KB Output isn't correct