| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 574047 |
2022-06-07T15:57:28 Z |
vovamr |
Bomb (IZhO17_bomb) |
C++17 |
|
652 ms |
74244 KB |
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }
inline void solve() {
int n, m;
cin >> n >> m;
ve<ve<int>> a(n, ve<int>(m));
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
char x;
cin >> x;
a[i][j] = x - '0';
}
}
ve<int> mx(m + 2, iinf);
for (int rep = 0; rep < 2; ++rep) {
ve<ve<int>> dp1(n, ve<int> (m)), dp2(n, ve<int> (m));
for (int j = 0; j < m; ++j) {
for (int i = 0; i < n; ++i) {
dp1[i][j] = (a[i][j] ? 1 + (!i ? 0 : dp1[i - 1][j]) : 0);
}
for (int i = n - 1; ~i; --i) {
dp2[i][j] = (a[i][j] ? 1 + (i + 1 == n ? 0 : dp2[i + 1][j]) : 0);
if (a[i][j]) chmin(mx[1], dp1[i][j] + dp2[i][j] - 1);
}
}
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ) {
if (!a[i][j]) { ++j; continue; }
int p = j;
while (j < m && a[i][p]) ++p;
int a = iinf, b = iinf;
for (int k = j; k < p; ++k) {
chmin(a, dp1[i][k]); chmin(b, dp2[i][k]);
chmin(mx[k - j + 1], a + b - 1);
}
chmin(mx[p - j + 1], 0);
j = p;
}
}
for (int i = 0; i < n; ++i) reverse(all(a[i]));
}
ll ans = 0;
for (int i = 1; i <= m; ++i) {
chmin(mx[i], mx[i - 1]);
chmax(ans, i * 1ll * mx[i]);
}
cout << ans;
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int q = 1; // cin >> q;
while (q--) solve();
cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
724 KB |
Output is correct |
| 4 |
Correct |
1 ms |
724 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
228 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 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 |
1 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 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1236 KB |
Output is correct |
| 28 |
Correct |
5 ms |
1620 KB |
Output is correct |
| 29 |
Correct |
5 ms |
1764 KB |
Output is correct |
| 30 |
Correct |
7 ms |
2560 KB |
Output is correct |
| 31 |
Correct |
6 ms |
2088 KB |
Output is correct |
| 32 |
Correct |
6 ms |
2124 KB |
Output is correct |
| 33 |
Correct |
8 ms |
2696 KB |
Output is correct |
| 34 |
Correct |
3 ms |
1296 KB |
Output is correct |
| 35 |
Correct |
9 ms |
2696 KB |
Output is correct |
| 36 |
Correct |
10 ms |
2724 KB |
Output is correct |
| 37 |
Correct |
0 ms |
212 KB |
Output is correct |
| 38 |
Correct |
626 ms |
74080 KB |
Output is correct |
| 39 |
Correct |
0 ms |
212 KB |
Output is correct |
| 40 |
Correct |
63 ms |
9452 KB |
Output is correct |
| 41 |
Correct |
0 ms |
212 KB |
Output is correct |
| 42 |
Correct |
1 ms |
340 KB |
Output is correct |
| 43 |
Correct |
586 ms |
74064 KB |
Output is correct |
| 44 |
Correct |
8 ms |
2696 KB |
Output is correct |
| 45 |
Correct |
607 ms |
74032 KB |
Output is correct |
| 46 |
Correct |
597 ms |
74000 KB |
Output is correct |
| 47 |
Correct |
610 ms |
74020 KB |
Output is correct |
| 48 |
Correct |
619 ms |
74016 KB |
Output is correct |
| 49 |
Correct |
644 ms |
74000 KB |
Output is correct |
| 50 |
Correct |
597 ms |
74076 KB |
Output is correct |
| 51 |
Correct |
606 ms |
74052 KB |
Output is correct |
| 52 |
Correct |
602 ms |
74012 KB |
Output is correct |
| 53 |
Correct |
628 ms |
74024 KB |
Output is correct |
| 54 |
Correct |
603 ms |
74028 KB |
Output is correct |
| 55 |
Correct |
585 ms |
74080 KB |
Output is correct |
| 56 |
Correct |
652 ms |
74004 KB |
Output is correct |
| 57 |
Correct |
583 ms |
74024 KB |
Output is correct |
| 58 |
Correct |
567 ms |
74040 KB |
Output is correct |
| 59 |
Correct |
566 ms |
74012 KB |
Output is correct |
| 60 |
Correct |
585 ms |
74004 KB |
Output is correct |
| 61 |
Correct |
642 ms |
74032 KB |
Output is correct |
| 62 |
Correct |
618 ms |
74056 KB |
Output is correct |
| 63 |
Correct |
629 ms |
74244 KB |
Output is correct |
| 64 |
Correct |
582 ms |
74056 KB |
Output is correct |
| 65 |
Correct |
610 ms |
74024 KB |
Output is correct |
| 66 |
Correct |
622 ms |
74000 KB |
Output is correct |
| 67 |
Correct |
624 ms |
73952 KB |
Output is correct |
| 68 |
Correct |
598 ms |
74012 KB |
Output is correct |
| 69 |
Correct |
594 ms |
74012 KB |
Output is correct |
| 70 |
Correct |
342 ms |
47548 KB |
Output is correct |
| 71 |
Correct |
552 ms |
74004 KB |
Output is correct |
| 72 |
Correct |
549 ms |
74048 KB |
Output is correct |
| 73 |
Correct |
558 ms |
74008 KB |
Output is correct |
| 74 |
Correct |
609 ms |
74068 KB |
Output is correct |
| 75 |
Correct |
575 ms |
73980 KB |
Output is correct |
| 76 |
Correct |
565 ms |
74000 KB |
Output is correct |
| 77 |
Correct |
554 ms |
74040 KB |
Output is correct |
| 78 |
Correct |
571 ms |
74052 KB |
Output is correct |
| 79 |
Correct |
547 ms |
74048 KB |
Output is correct |
| 80 |
Correct |
516 ms |
74012 KB |
Output is correct |
| 81 |
Correct |
519 ms |
73964 KB |
Output is correct |
| 82 |
Correct |
559 ms |
74004 KB |
Output is correct |
| 83 |
Correct |
579 ms |
74008 KB |
Output is correct |
| 84 |
Correct |
540 ms |
74020 KB |
Output is correct |
| 85 |
Correct |
554 ms |
73916 KB |
Output is correct |
| 86 |
Correct |
623 ms |
74000 KB |
Output is correct |
| 87 |
Correct |
564 ms |
74016 KB |
Output is correct |
| 88 |
Correct |
565 ms |
74008 KB |
Output is correct |
| 89 |
Correct |
578 ms |
74016 KB |
Output is correct |
| 90 |
Correct |
358 ms |
47480 KB |
Output is correct |
| 91 |
Correct |
591 ms |
74060 KB |
Output is correct |
| 92 |
Correct |
593 ms |
74024 KB |
Output is correct |
| 93 |
Correct |
641 ms |
74040 KB |
Output is correct |
| 94 |
Correct |
603 ms |
74080 KB |
Output is correct |
| 95 |
Correct |
586 ms |
74028 KB |
Output is correct |
| 96 |
Correct |
572 ms |
74004 KB |
Output is correct |
| 97 |
Correct |
633 ms |
74084 KB |
Output is correct |
| 98 |
Correct |
597 ms |
74004 KB |
Output is correct |
| 99 |
Correct |
574 ms |
74084 KB |
Output is correct |
| 100 |
Correct |
617 ms |
74004 KB |
Output is correct |
