oj.uz

Submission #854582

# Submission time Handle Problem Language Result Execution time Memory
854582 2023-09-28T06:05:29 Z The_Samurai Bomb (IZhO17_bomb) C++17
39 / 100
 1000 ms 55792 KB 
#include "bits/stdc++.h"
using namespace std;
using ll = long long;
const int inf = 1e9, N = 1e6 + 5;

int main() {
    cin.tie(0)->sync_with_stdio(false);
#ifdef sunnatov
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
//    freopen("game.in", "r", stdin);
//    freopen("game.out", "w", stdout);
#endif

    int n, m;
    cin >> n >> m;
    vector<vector<char>> a(n + 1, vector<char>(m + 1));
    vector<vector<int>> pref(n + 1, vector<int>(m + 1));
    for (int i = 1; i <= n; i++) for (int j = 1; j <= m; j++) {
        cin >> a[i][j];
        pref[i][j] = pref[i][j - 1] + pref[i - 1][j] - pref[i - 1][j - 1] + (int) (a[i][j] == '1');
    }
    auto get_sum = [&](int x1, int y1, int x2, int y2) {
        return pref[x2][y2] - pref[x2][y1 - 1] - pref[x1 - 1][y2] + pref[x1 - 1][y1 - 1];
    };
    vector<vector<int>> checked(n + 1, vector<int>(m + 1));
    int z = 0;
    auto check = [&](int h, int w) {
        z++;
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= m; j++) {
                if (a[i][j] == '0') continue;
                if (i + h - 1 <= n and j + w - 1 <= m and get_sum(i, j, i + h - 1, j + w - 1) == h * w) {
                    for (int x = i; x < i + h; x++) {
                        for (int y = j; y < j + w; y++) {
                            checked[x][y] = z;
                        }
                    }
                }
                if (checked[i][j] < z) return false;
            }
        }
        return true;
    };
    vector<int> best(n + 1, -1);
    auto get = [&](int h) {
        if (best[h] != -1) return best[h];
        int lx = 1, rx = (h > 1 ? best[h - 1] : m);
        best[h] = 0;
        while (lx <= rx) {
            int mid = (lx + rx) >> 1;
            if (check(h, mid)) {
                best[h] = mid;
                lx = mid + 1;
            } else {
                rx = mid - 1;
            }
        }
        return best[h];
    };
    int ans = 0;
    for (int i = 1; i <= n; i++) ans = max(ans, get(i) * i);
    cout << ans;
}

Subtask #1
39.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 872 KB Output is correct
4 Correct 4 ms 880 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 500 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 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 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 5 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 4 ms 348 KB Output is correct
26 Correct 12 ms 556 KB Output is correct
27 Correct 2 ms 1116 KB Output is correct
28 Correct 3 ms 1368 KB Output is correct
29 Execution timed out 1093 ms 1436 KB Time limit exceeded
30 Correct 195 ms 2144 KB Output is correct
31 Correct 206 ms 1628 KB Output is correct
32 Correct 84 ms 1628 KB Output is correct
33 Correct 791 ms 2392 KB Output is correct
34 Correct 3 ms 1116 KB Output is correct
35 Correct 15 ms 2304 KB Output is correct
36 Execution timed out 1014 ms 2140 KB Time limit exceeded
37 Correct 0 ms 348 KB Output is correct
38 Execution timed out 1081 ms 55556 KB Time limit exceeded
39 Correct 0 ms 348 KB Output is correct
40 Execution timed out 1083 ms 7260 KB Time limit exceeded
41 Correct 0 ms 344 KB Output is correct
42 Correct 70 ms 344 KB Output is correct
43 Execution timed out 1055 ms 55636 KB Time limit exceeded
44 Execution timed out 1061 ms 2140 KB Time limit exceeded
45 Execution timed out 1045 ms 55632 KB Time limit exceeded
46 Execution timed out 1068 ms 55540 KB Time limit exceeded
47 Execution timed out 1014 ms 55632 KB Time limit exceeded
48 Execution timed out 1048 ms 55636 KB Time limit exceeded
49 Execution timed out 1070 ms 55636 KB Time limit exceeded
50 Execution timed out 1014 ms 55632 KB Time limit exceeded
51 Execution timed out 1048 ms 55632 KB Time limit exceeded
52 Execution timed out 1077 ms 55628 KB Time limit exceeded
53 Execution timed out 1064 ms 55596 KB Time limit exceeded
54 Execution timed out 1056 ms 55636 KB Time limit exceeded
55 Execution timed out 1049 ms 55628 KB Time limit exceeded
56 Execution timed out 1060 ms 55636 KB Time limit exceeded
57 Execution timed out 1058 ms 55636 KB Time limit exceeded
58 Execution timed out 1035 ms 55636 KB Time limit exceeded
59 Execution timed out 1018 ms 55636 KB Time limit exceeded
60 Execution timed out 1082 ms 55764 KB Time limit exceeded
61 Execution timed out 1058 ms 55636 KB Time limit exceeded
62 Execution timed out 1043 ms 55632 KB Time limit exceeded
63 Execution timed out 1078 ms 55636 KB Time limit exceeded
64 Execution timed out 1092 ms 55632 KB Time limit exceeded
65 Execution timed out 1044 ms 55636 KB Time limit exceeded
66 Execution timed out 1063 ms 55556 KB Time limit exceeded
67 Execution timed out 1067 ms 55552 KB Time limit exceeded
68 Execution timed out 1036 ms 55556 KB Time limit exceeded
69 Execution timed out 1036 ms 55632 KB Time limit exceeded
70 Execution timed out 1033 ms 35664 KB Time limit exceeded
71 Execution timed out 1060 ms 55540 KB Time limit exceeded
72 Execution timed out 1064 ms 55636 KB Time limit exceeded
73 Execution timed out 1031 ms 55540 KB Time limit exceeded
74 Execution timed out 1030 ms 55544 KB Time limit exceeded
75 Execution timed out 1049 ms 55540 KB Time limit exceeded
76 Execution timed out 1044 ms 55544 KB Time limit exceeded
77 Execution timed out 1014 ms 55636 KB Time limit exceeded
78 Execution timed out 1045 ms 55632 KB Time limit exceeded
79 Execution timed out 1050 ms 55632 KB Time limit exceeded
80 Execution timed out 1060 ms 55636 KB Time limit exceeded
81 Execution timed out 1043 ms 55544 KB Time limit exceeded
82 Execution timed out 1034 ms 55632 KB Time limit exceeded
83 Execution timed out 1065 ms 55540 KB Time limit exceeded
84 Correct 252 ms 55792 KB Output is correct
85 Execution timed out 1071 ms 55636 KB Time limit exceeded
86 Execution timed out 1050 ms 55632 KB Time limit exceeded
87 Execution timed out 1032 ms 55632 KB Time limit exceeded
88 Execution timed out 1067 ms 55636 KB Time limit exceeded
89 Execution timed out 1066 ms 55700 KB Time limit exceeded
90 Execution timed out 1035 ms 35668 KB Time limit exceeded
91 Execution timed out 1066 ms 55560 KB Time limit exceeded
92 Execution timed out 1022 ms 55552 KB Time limit exceeded
93 Execution timed out 1020 ms 55552 KB Time limit exceeded
94 Execution timed out 1073 ms 55636 KB Time limit exceeded
95 Execution timed out 1058 ms 55544 KB Time limit exceeded
96 Execution timed out 1071 ms 55556 KB Time limit exceeded
97 Execution timed out 1083 ms 55632 KB Time limit exceeded
98 Execution timed out 1072 ms 55632 KB Time limit exceeded
99 Execution timed out 1057 ms 55636 KB Time limit exceeded
100 Execution timed out 1048 ms 55636 KB Time limit exceeded