oj.uz

Submission #706360

# Submission time Handle Problem Language Result Execution time Memory
706360 2023-03-06T10:30:17 Z nifeshe Bomb (IZhO17_bomb) C++17
76 / 100
 689 ms 56336 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) if (a[i][j] == '1') 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;
    bool ok = 0;
    for (int i = 1; i <= m; ++i) {
        umin(mx[i], mx[i - 1]);
        if (i > 1 && mx[i] != mx[i - 1] && mx[i] > 0) ok = 1;
        umax(ans, mx[i] * i);
    }
    assert(ok);
    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
76.0 / 100.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 6
2 Runtime error 1 ms 468 KB Execution killed with signal 6
3 Runtime error 2 ms 1108 KB Execution killed with signal 6
4 Runtime error 2 ms 1108 KB Execution killed with signal 6
5 Runtime error 1 ms 468 KB Execution killed with signal 6
6 Runtime error 1 ms 468 KB Execution killed with signal 6
7 Runtime error 1 ms 468 KB Execution killed with signal 6
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Runtime error 1 ms 468 KB Execution killed with signal 6
14 Runtime error 1 ms 468 KB Execution killed with signal 6
15 Correct 1 ms 212 KB Output is correct
16 Runtime error 1 ms 468 KB Execution killed with signal 6
17 Runtime error 1 ms 596 KB Execution killed with signal 6
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Runtime error 1 ms 596 KB Execution killed with signal 6
27 Runtime error 3 ms 980 KB Execution killed with signal 6
28 Correct 2 ms 1240 KB Output is correct
29 Correct 4 ms 1364 KB Output is correct
30 Correct 4 ms 2004 KB Output is correct
31 Correct 3 ms 1620 KB Output is correct
32 Correct 4 ms 1748 KB Output is correct
33 Correct 4 ms 2132 KB Output is correct
34 Correct 2 ms 1040 KB Output is correct
35 Correct 4 ms 2132 KB Output is correct
36 Runtime error 9 ms 2132 KB Execution killed with signal 6
37 Correct 0 ms 212 KB Output is correct
38 Runtime error 631 ms 56200 KB Execution killed with signal 6
39 Correct 0 ms 212 KB Output is correct
40 Correct 44 ms 7260 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Runtime error 527 ms 56168 KB Execution killed with signal 6
44 Correct 5 ms 2132 KB Output is correct
45 Correct 487 ms 56228 KB Output is correct
46 Runtime error 486 ms 56260 KB Execution killed with signal 6
47 Correct 534 ms 56164 KB Output is correct
48 Correct 429 ms 56188 KB Output is correct
49 Runtime error 648 ms 56188 KB Execution killed with signal 6
50 Correct 420 ms 56220 KB Output is correct
51 Correct 467 ms 56160 KB Output is correct
52 Correct 479 ms 56296 KB Output is correct
53 Correct 486 ms 56084 KB Output is correct
54 Correct 331 ms 56196 KB Output is correct
55 Correct 354 ms 56196 KB Output is correct
56 Runtime error 663 ms 56168 KB Execution killed with signal 6
57 Correct 334 ms 56204 KB Output is correct
58 Correct 356 ms 56160 KB Output is correct
59 Correct 295 ms 56160 KB Output is correct
60 Runtime error 389 ms 56168 KB Execution killed with signal 6
61 Runtime error 653 ms 56196 KB Execution killed with signal 6
62 Runtime error 674 ms 56168 KB Execution killed with signal 6
63 Runtime error 664 ms 56164 KB Execution killed with signal 6
64 Runtime error 410 ms 56160 KB Execution killed with signal 6
65 Correct 489 ms 56164 KB Output is correct
66 Correct 505 ms 56192 KB Output is correct
67 Correct 559 ms 56160 KB Output is correct
68 Correct 606 ms 56160 KB Output is correct
69 Correct 614 ms 56164 KB Output is correct
70 Correct 185 ms 36072 KB Output is correct
71 Correct 291 ms 56140 KB Output is correct
72 Correct 341 ms 56168 KB Output is correct
73 Correct 326 ms 56164 KB Output is correct
74 Correct 376 ms 56160 KB Output is correct
75 Correct 334 ms 56164 KB Output is correct
76 Correct 381 ms 56336 KB Output is correct
77 Correct 341 ms 56196 KB Output is correct
78 Correct 336 ms 56196 KB Output is correct
79 Correct 194 ms 56160 KB Output is correct
80 Correct 193 ms 56208 KB Output is correct
81 Correct 278 ms 56164 KB Output is correct
82 Correct 373 ms 56160 KB Output is correct
83 Correct 364 ms 56196 KB Output is correct
84 Correct 200 ms 56260 KB Output is correct
85 Correct 360 ms 56168 KB Output is correct
86 Correct 666 ms 56168 KB Output is correct
87 Correct 346 ms 56160 KB Output is correct
88 Correct 381 ms 56160 KB Output is correct
89 Correct 408 ms 56160 KB Output is correct
90 Correct 238 ms 36060 KB Output is correct
91 Correct 447 ms 56208 KB Output is correct
92 Correct 442 ms 56164 KB Output is correct
93 Correct 689 ms 56160 KB Output is correct
94 Correct 448 ms 56160 KB Output is correct
95 Correct 385 ms 56164 KB Output is correct
96 Correct 371 ms 56164 KB Output is correct
97 Correct 626 ms 56160 KB Output is correct
98 Correct 389 ms 56184 KB Output is correct
99 Correct 459 ms 56164 KB Output is correct
100 Correct 617 ms 56164 KB Output is correct