oj.uz

Submission #706343

# Submission time Handle Problem Language Result Execution time Memory
706343 2023-03-06T09:46:12 Z KiriLL1ca Bomb (IZhO17_bomb) C++17
1 / 100
 623 ms 56304 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fr first
#define sc second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define endl '\n'
#define sz(x) (int)((x).size())
#define vec vector
#define pw(x) (1ll << x)

using namespace std;
using namespace __gnu_pbds;

template <typename T> inline bool umin (T &a, const T &b) { if (a > b) { a = b; return 1; } return 0; }
template <typename T> inline bool umax (T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

const int inf = 1e9 + 17;

inline void solve () {
    int n, m; cin >> n >> m;
    vec <string> a (n);
    for (auto &i : a) cin >> i;

    vec <int> mx (m + 2, inf);

    for (int iter = 0; iter < 2; ++iter) {
        vec <vec <int>> p (n, vec <int> (m)), s (n, vec <int> (m));
        for (int j = 0; j < m; ++j) {
            p[0][j] = (a[0][j] == '1');
            for (int i = 1; i < n; ++i) {
                if (a[i][j] == '1') p[i][j] = p[i - 1][j] + 1;
            }

            s[n - 1][j] = (a[n - 1][j] == '1');
            for (int i = n - 2; ~i; --i) {
                if (a[i][j] == '1') s[i][j] = s[i + 1][j] + 1;
            }

            for (int i = 0; i < n; ++i) umin(mx[1], p[i][j] + s[i][j] - 1);
        }

        for (int i = 0; i < n; ++i) {
            for (int l = 0, r = 0; r < m; ) {
                while (r < m && a[i][r] == '1') ++r;
                if (l == r) {
                    ++l, ++r;
                    continue;
                }

                int mn_down = inf, mn_up = inf;
                for (int q = l; q < r; ++q) {
                    umin(mn_up, p[i][q]);
                    umin(mn_down, s[i][q]);
                    umin(mx[q - l + 1], mn_down + mn_up - 1);
                }
                umin(mx[r - l + 1], 0);

                l = r;
            }
        }

        for (auto &i : a) reverse(all(i));
    }

    int ans = 0;
    for (int i = 1; i <= m; ++i) {
        umin(mx[i], mx[i - 1]);
//        cout << mx[i] << " " << i << endl;
        umax(ans, mx[i] * i);
    }
    cout << ans << endl;
}

signed 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);
    #endif// LOCAL
    int t = 1; //cin >> t;
    while (t--) solve();
    return 0;
}

Subtask #1
1.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Incorrect 1 ms 212 KB Output isn't correct
3 Incorrect 1 ms 596 KB Output isn't correct
4 Incorrect 1 ms 596 KB Output isn't correct
5 Incorrect 1 ms 340 KB Output isn't correct
6 Incorrect 0 ms 212 KB Output isn't correct
7 Incorrect 1 ms 212 KB Output isn't correct
8 Incorrect 0 ms 212 KB Output isn't correct
9 Incorrect 0 ms 212 KB Output isn't correct
10 Incorrect 0 ms 212 KB Output isn't correct
11 Incorrect 0 ms 212 KB Output isn't correct
12 Incorrect 0 ms 212 KB Output isn't correct
13 Incorrect 0 ms 212 KB Output isn't correct
14 Incorrect 1 ms 212 KB Output isn't correct
15 Incorrect 0 ms 212 KB Output isn't correct
16 Incorrect 1 ms 212 KB Output isn't correct
17 Incorrect 1 ms 340 KB Output isn't correct
18 Incorrect 1 ms 340 KB Output isn't correct
19 Incorrect 1 ms 340 KB Output isn't correct
20 Incorrect 1 ms 340 KB Output isn't correct
21 Incorrect 0 ms 340 KB Output isn't correct
22 Incorrect 1 ms 340 KB Output isn't correct
23 Incorrect 1 ms 340 KB Output isn't correct
24 Incorrect 0 ms 340 KB Output isn't correct
25 Incorrect 1 ms 340 KB Output isn't correct
26 Incorrect 1 ms 340 KB Output isn't correct
27 Incorrect 2 ms 980 KB Output isn't correct
28 Incorrect 3 ms 1240 KB Output isn't correct
29 Incorrect 3 ms 1380 KB Output isn't correct
30 Incorrect 4 ms 2004 KB Output isn't correct
31 Incorrect 3 ms 1620 KB Output isn't correct
32 Incorrect 5 ms 1748 KB Output isn't correct
33 Incorrect 5 ms 2132 KB Output isn't correct
34 Incorrect 2 ms 1040 KB Output isn't correct
35 Incorrect 4 ms 2132 KB Output isn't correct
36 Incorrect 6 ms 2132 KB Output isn't correct
37 Incorrect 0 ms 212 KB Output isn't correct
38 Correct 600 ms 56168 KB Output is correct
39 Incorrect 0 ms 212 KB Output isn't correct
40 Incorrect 46 ms 7252 KB Output isn't correct
41 Incorrect 0 ms 212 KB Output isn't correct
42 Incorrect 1 ms 340 KB Output isn't correct
43 Incorrect 556 ms 56176 KB Output isn't correct
44 Incorrect 5 ms 2132 KB Output isn't correct
45 Incorrect 543 ms 56236 KB Output isn't correct
46 Incorrect 513 ms 56248 KB Output isn't correct
47 Incorrect 573 ms 56188 KB Output isn't correct
48 Incorrect 543 ms 56228 KB Output isn't correct
49 Incorrect 612 ms 56164 KB Output isn't correct
50 Incorrect 499 ms 56296 KB Output isn't correct
51 Incorrect 513 ms 56192 KB Output isn't correct
52 Incorrect 513 ms 56196 KB Output isn't correct
53 Incorrect 505 ms 56164 KB Output isn't correct
54 Incorrect 458 ms 56264 KB Output isn't correct
55 Incorrect 447 ms 56164 KB Output isn't correct
56 Incorrect 605 ms 56304 KB Output isn't correct
57 Incorrect 439 ms 56184 KB Output isn't correct
58 Incorrect 448 ms 56240 KB Output isn't correct
59 Incorrect 437 ms 56172 KB Output isn't correct
60 Incorrect 473 ms 56300 KB Output isn't correct
61 Incorrect 623 ms 56288 KB Output isn't correct
62 Incorrect 616 ms 56164 KB Output isn't correct
63 Incorrect 595 ms 56172 KB Output isn't correct
64 Incorrect 452 ms 56148 KB Output isn't correct
65 Incorrect 528 ms 56192 KB Output isn't correct
66 Incorrect 517 ms 56148 KB Output isn't correct
67 Incorrect 536 ms 56164 KB Output isn't correct
68 Incorrect 559 ms 56296 KB Output isn't correct
69 Incorrect 456 ms 56204 KB Output isn't correct
70 Incorrect 254 ms 36068 KB Output isn't correct
71 Incorrect 435 ms 56156 KB Output isn't correct
72 Incorrect 460 ms 56168 KB Output isn't correct
73 Incorrect 499 ms 56140 KB Output isn't correct
74 Incorrect 447 ms 56236 KB Output isn't correct
75 Incorrect 452 ms 56228 KB Output isn't correct
76 Incorrect 447 ms 56196 KB Output isn't correct
77 Incorrect 445 ms 56164 KB Output isn't correct
78 Incorrect 451 ms 56168 KB Output isn't correct
79 Incorrect 398 ms 56212 KB Output isn't correct
80 Incorrect 388 ms 56160 KB Output isn't correct
81 Incorrect 404 ms 56172 KB Output isn't correct
82 Incorrect 462 ms 56276 KB Output isn't correct
83 Incorrect 476 ms 56168 KB Output isn't correct
84 Incorrect 381 ms 56168 KB Output isn't correct
85 Incorrect 456 ms 56184 KB Output isn't correct
86 Incorrect 591 ms 56212 KB Output isn't correct
87 Incorrect 482 ms 56164 KB Output isn't correct
88 Incorrect 467 ms 56156 KB Output isn't correct
89 Incorrect 513 ms 56228 KB Output isn't correct
90 Incorrect 274 ms 36068 KB Output isn't correct
91 Incorrect 453 ms 56156 KB Output isn't correct
92 Incorrect 501 ms 56204 KB Output isn't correct
93 Incorrect 573 ms 56164 KB Output isn't correct
94 Incorrect 513 ms 56192 KB Output isn't correct
95 Incorrect 444 ms 56160 KB Output isn't correct
96 Incorrect 437 ms 56164 KB Output isn't correct
97 Incorrect 565 ms 56164 KB Output isn't correct
98 Incorrect 444 ms 56304 KB Output isn't correct
99 Incorrect 462 ms 56196 KB Output isn't correct
100 Incorrect 586 ms 56188 KB Output isn't correct