| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 704713 |
2023-03-02T18:08:37 Z |
KiriLL1ca |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
56464 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)
#pragma GCC optimize ("Ofast")
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;
inline void solve () {
int n, m; cin >> n >> m;
vector <string> a (n);
for (auto &i : a) cin >> i;
vector <vector <int>> p (n, vector <int> (m));
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (i) p[i][j] += p[i - 1][j];
if (j) p[i][j] += p[i][j - 1];
if (i && j) p[i][j] -= p[i - 1][j - 1];
p[i][j] += (a[i][j] - '0');
}
}
auto get = [&] (int x, int y, int xx, int yy) {
int res = p[xx][yy];
if (x) res -= p[x - 1][yy];
if (y) res -= p[xx][y - 1];
if (x && y) res += p[x - 1][y - 1];
return res;
};
int ans = 0;
{
int side = 1e9;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
int res = 0;
for (int q = 12; ~q; --q) {
res += pw(q);
if (j + res - 1 >= m || get(i, j, i, j + res - 1) != res) res -= pw(q);
}
if (res) umin(side, res);
j += res;
}
}
auto bad = [&] (int t) {
vector <vector <int>> f (n + 1, vector <int> (m + 1));
for (int i = 0; i + t - 1 < n; ++i) {
for (int j = 0; j + side - 1 < m; ++j) {
if (get(i, j, i + t - 1, j + side - 1) == side * t) {
++f[i][j];
--f[i + t][j];
--f[i][j + side];
++f[i + t][j + side];
}
}
}
for (int i = 0; i <= n; ++i) {
for (int j = 0; j <= m; ++j) {
if (i) f[i][j] += f[i - 1][j];
if (j) f[i][j] += f[i][j - 1];
if (i && j) f[i][j] -= f[i - 1][j - 1];
}
}
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (a[i][j] == '1' && !f[i][j]) return 1;
}
}
return 0;
};
int res = 0;
for (int i = 12; ~i; --i) {
res += pw(i);
if (bad(res)) res -= pw(i);
}
umax(ans, side * res);
}
{
int side = 1e9;
for (int j = 0; j < m; ++j) {
for (int i = 0; i < n; ++i) {
int res = 0;
for (int q = 12; ~q; --q) {
res += pw(q);
if (i + res - 1 >= n || get(i, j, i + res - 1, j) != res) res -= pw(q);
}
if (res) umin(side, res);
i += res;
}
}
auto bad = [&] (int t) {
vector <vector <int>> f (n + 1, vector <int> (m + 1));
for (int i = 0; i + side - 1 < n; ++i) {
for (int j = 0; j + t - 1 < m; ++j) {
if (get(i, j, i + side - 1, j + t - 1) == side * t) {
++f[i][j];
--f[i + side][j];
--f[i][j + t];
++f[i + side][j + t];
}
}
}
for (int i = 0; i <= n; ++i) {
for (int j = 0; j <= m; ++j) {
if (i) f[i][j] += f[i - 1][j];
if (j) f[i][j] += f[i][j - 1];
if (i && j) f[i][j] -= f[i - 1][j - 1];
}
}
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (a[i][j] == '1' && !f[i][j]) return 1;
}
}
return 0;
};
int res = 0;
for (int i = 12; ~i; --i) {
res += pw(i);
if (bad(res)) res -= pw(i);
}
umax(ans, side * res);
}
cout << ans;
}
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;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
3 ms |
596 KB |
Output is correct |
| 4 |
Correct |
4 ms |
596 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is 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 |
1 ms |
340 KB |
Output isn't correct |
| 22 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 23 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 25 |
Incorrect |
2 ms |
384 KB |
Output isn't correct |
| 26 |
Correct |
2 ms |
340 KB |
Output is correct |
| 27 |
Correct |
14 ms |
1044 KB |
Output is correct |
| 28 |
Incorrect |
22 ms |
1300 KB |
Output isn't correct |
| 29 |
Incorrect |
22 ms |
1468 KB |
Output isn't correct |
| 30 |
Incorrect |
36 ms |
2032 KB |
Output isn't correct |
| 31 |
Incorrect |
29 ms |
1772 KB |
Output isn't correct |
| 32 |
Incorrect |
30 ms |
1816 KB |
Output isn't correct |
| 33 |
Incorrect |
38 ms |
2164 KB |
Output isn't correct |
| 34 |
Incorrect |
19 ms |
1092 KB |
Output isn't correct |
| 35 |
Incorrect |
42 ms |
2180 KB |
Output isn't correct |
| 36 |
Correct |
40 ms |
2164 KB |
Output is correct |
| 37 |
Correct |
0 ms |
212 KB |
Output is correct |
| 38 |
Correct |
856 ms |
56200 KB |
Output is correct |
| 39 |
Correct |
1 ms |
212 KB |
Output is correct |
| 40 |
Correct |
118 ms |
7324 KB |
Output is correct |
| 41 |
Correct |
1 ms |
212 KB |
Output is correct |
| 42 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 43 |
Execution timed out |
1089 ms |
56296 KB |
Time limit exceeded |
| 44 |
Incorrect |
32 ms |
2164 KB |
Output isn't correct |
| 45 |
Execution timed out |
1096 ms |
56244 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1081 ms |
56164 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1075 ms |
56316 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1084 ms |
56340 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1090 ms |
56204 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1068 ms |
56200 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1077 ms |
56284 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1048 ms |
56228 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1079 ms |
56232 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1084 ms |
56212 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1081 ms |
56272 KB |
Time limit exceeded |
| 56 |
Correct |
911 ms |
56228 KB |
Output is correct |
| 57 |
Execution timed out |
1083 ms |
56168 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1068 ms |
56216 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1043 ms |
56176 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1056 ms |
56288 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1089 ms |
56256 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1078 ms |
56260 KB |
Time limit exceeded |
| 63 |
Correct |
926 ms |
56352 KB |
Output is correct |
| 64 |
Execution timed out |
1076 ms |
56176 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1088 ms |
56284 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1082 ms |
56308 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1081 ms |
56364 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1079 ms |
56204 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1089 ms |
56140 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1014 ms |
36236 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1081 ms |
56216 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1077 ms |
56224 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1077 ms |
56172 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1088 ms |
56244 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1083 ms |
56184 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1086 ms |
56136 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1079 ms |
56172 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1088 ms |
56168 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1082 ms |
56236 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1088 ms |
56272 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1084 ms |
56172 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1076 ms |
56320 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1079 ms |
56180 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1078 ms |
56208 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1058 ms |
56160 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1085 ms |
56276 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1073 ms |
56176 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1072 ms |
56216 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1075 ms |
56348 KB |
Time limit exceeded |
| 90 |
Incorrect |
965 ms |
36192 KB |
Output isn't correct |
| 91 |
Execution timed out |
1084 ms |
56164 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1080 ms |
56208 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1081 ms |
56464 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1072 ms |
56196 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1067 ms |
56172 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1059 ms |
56200 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1068 ms |
56352 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1076 ms |
56316 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1074 ms |
56332 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1060 ms |
56384 KB |
Time limit exceeded |
