| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 94315 |
2019-01-17T13:51:22 Z |
Kastanda |
Bomb (IZhO17_bomb) |
C++11 |
|
127 ms |
56952 KB |
#include<bits/stdc++.h>
using namespace std;
const int N = 2505;
int n, m, Mnx, Mny, R[N], up[N][N], dn[N][N];
char A[N][N];
inline void Init()
{
Mnx = m; Mny = n;
for (int i = 1; i <= n; i++)
{
int last = 0;
for (int j = 1; j <= m; j++)
if (A[i][j] == '0')
{
if (last != j - 1)
Mnx = min(Mnx, j - last - 1);
last = j;
}
if (last != m)
Mnx = min(Mnx, m - last);
}
for (int i = 1; i <= m; i++)
{
int last = 0;
for (int j = 1; j <= n; j++)
if (A[j][i] == '0')
{
if (last != j - 1)
Mny = min(Mny, j - last - 1);
last = j;
}
if (last != n)
Mny = min(Mny, n - last);
}
}
int main()
{
scanf("%d%d", &n, &m);
for (int i = 1; i <= n; i++)
scanf("%s", &A[i][1]);
Init();
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
{
up[i][j] = i - 1;
if (A[i - 1][j] == '1')
up[i][j] = up[i - 1][j];
}
for (int i = n; i; i--)
for (int j = 1; j <= m; j++)
{
dn[i][j] = i + 1;
if (A[i + 1][j] == '1')
dn[i][j] = dn[i + 1][j];
}
for (int i = 0; i <= Mnx; i++)
R[i] = Mny;
for (int i = 1; i <= n; i++)
{
int l = 0, r = n + 1, c = 0;
for (int j = 1; j <= m; j++)
{
if (A[i][j] == '1')
{
c ++;
l = max(l, up[i][j]);
r = min(r, dn[i][j]);
R[c] = min(R[c], r - l - 1);
}
else
l = 0, r = n + 1, c = 0;
}
l = 0, r = n + 1, c = 0;
for (int j = m; j; j--)
{
if (A[i][j] == '1')
{
c ++;
l = max(l, up[i][j]);
r = min(r, dn[i][j]);
R[c] = min(R[c], r - l - 1);
}
else
l = 0, r = n + 1, c = 0;
}
}
int Mx_s = 0;
for (int i = 1; i <= Mnx; i++)
{
R[i] = min(R[i], R[i - 1]);
Mx_s = max(Mx_s, i * R[i]);
}
return !printf("%d", Mx_s);
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:40:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~
bomb.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", &A[i][1]);
~~~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
18 ms |
26616 KB |
Output is correct |
| 4 |
Correct |
21 ms |
26488 KB |
Output is correct |
| 5 |
Correct |
2 ms |
380 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Correct |
2 ms |
504 KB |
Output is correct |
| 9 |
Correct |
2 ms |
504 KB |
Output is correct |
| 10 |
Correct |
2 ms |
504 KB |
Output is correct |
| 11 |
Correct |
2 ms |
504 KB |
Output is correct |
| 12 |
Correct |
2 ms |
504 KB |
Output is correct |
| 13 |
Correct |
2 ms |
504 KB |
Output is correct |
| 14 |
Correct |
2 ms |
504 KB |
Output is correct |
| 15 |
Correct |
2 ms |
504 KB |
Output is correct |
| 16 |
Correct |
2 ms |
504 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1404 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1400 KB |
Output is correct |
| 21 |
Correct |
2 ms |
888 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1144 KB |
Output is correct |
| 23 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 24 |
Correct |
3 ms |
1272 KB |
Output is correct |
| 25 |
Correct |
3 ms |
1532 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 27 |
Correct |
5 ms |
4060 KB |
Output is correct |
| 28 |
Correct |
6 ms |
4216 KB |
Output is correct |
| 29 |
Correct |
7 ms |
5368 KB |
Output is correct |
| 30 |
Correct |
8 ms |
6396 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5012 KB |
Output is correct |
| 32 |
Correct |
8 ms |
5808 KB |
Output is correct |
| 33 |
Correct |
8 ms |
6776 KB |
Output is correct |
| 34 |
Correct |
6 ms |
4728 KB |
Output is correct |
| 35 |
Correct |
8 ms |
6648 KB |
Output is correct |
| 36 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 37 |
Correct |
2 ms |
504 KB |
Output is correct |
| 38 |
Correct |
115 ms |
56312 KB |
Output is correct |
| 39 |
Correct |
2 ms |
504 KB |
Output is correct |
| 40 |
Correct |
22 ms |
15864 KB |
Output is correct |
| 41 |
Correct |
2 ms |
504 KB |
Output is correct |
| 42 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 43 |
Correct |
118 ms |
56184 KB |
Output is correct |
| 44 |
Correct |
8 ms |
6648 KB |
Output is correct |
| 45 |
Correct |
119 ms |
56184 KB |
Output is correct |
| 46 |
Correct |
127 ms |
56432 KB |
Output is correct |
| 47 |
Correct |
118 ms |
56184 KB |
Output is correct |
| 48 |
Correct |
123 ms |
56356 KB |
Output is correct |
| 49 |
Correct |
106 ms |
56184 KB |
Output is correct |
| 50 |
Correct |
109 ms |
56376 KB |
Output is correct |
| 51 |
Correct |
118 ms |
56184 KB |
Output is correct |
| 52 |
Correct |
111 ms |
56288 KB |
Output is correct |
| 53 |
Correct |
117 ms |
56156 KB |
Output is correct |
| 54 |
Correct |
111 ms |
56156 KB |
Output is correct |
| 55 |
Correct |
115 ms |
56200 KB |
Output is correct |
| 56 |
Correct |
124 ms |
56184 KB |
Output is correct |
| 57 |
Correct |
117 ms |
56312 KB |
Output is correct |
| 58 |
Correct |
113 ms |
56212 KB |
Output is correct |
| 59 |
Correct |
105 ms |
56248 KB |
Output is correct |
| 60 |
Correct |
102 ms |
56184 KB |
Output is correct |
| 61 |
Correct |
108 ms |
56184 KB |
Output is correct |
| 62 |
Correct |
112 ms |
56320 KB |
Output is correct |
| 63 |
Correct |
111 ms |
56156 KB |
Output is correct |
| 64 |
Correct |
101 ms |
56268 KB |
Output is correct |
| 65 |
Correct |
105 ms |
56196 KB |
Output is correct |
| 66 |
Correct |
113 ms |
56184 KB |
Output is correct |
| 67 |
Correct |
124 ms |
56184 KB |
Output is correct |
| 68 |
Correct |
117 ms |
56188 KB |
Output is correct |
| 69 |
Correct |
110 ms |
56312 KB |
Output is correct |
| 70 |
Correct |
78 ms |
45012 KB |
Output is correct |
| 71 |
Correct |
108 ms |
56312 KB |
Output is correct |
| 72 |
Correct |
116 ms |
56184 KB |
Output is correct |
| 73 |
Correct |
119 ms |
56312 KB |
Output is correct |
| 74 |
Correct |
118 ms |
56844 KB |
Output is correct |
| 75 |
Correct |
109 ms |
56744 KB |
Output is correct |
| 76 |
Correct |
115 ms |
56872 KB |
Output is correct |
| 77 |
Correct |
111 ms |
56848 KB |
Output is correct |
| 78 |
Correct |
121 ms |
56764 KB |
Output is correct |
| 79 |
Correct |
117 ms |
56772 KB |
Output is correct |
| 80 |
Correct |
107 ms |
56796 KB |
Output is correct |
| 81 |
Correct |
111 ms |
56816 KB |
Output is correct |
| 82 |
Correct |
117 ms |
56796 KB |
Output is correct |
| 83 |
Correct |
111 ms |
56920 KB |
Output is correct |
| 84 |
Correct |
113 ms |
56796 KB |
Output is correct |
| 85 |
Correct |
118 ms |
56824 KB |
Output is correct |
| 86 |
Correct |
117 ms |
56952 KB |
Output is correct |
| 87 |
Correct |
115 ms |
56768 KB |
Output is correct |
| 88 |
Correct |
115 ms |
56824 KB |
Output is correct |
| 89 |
Correct |
111 ms |
56888 KB |
Output is correct |
| 90 |
Correct |
76 ms |
45732 KB |
Output is correct |
| 91 |
Correct |
115 ms |
56824 KB |
Output is correct |
| 92 |
Correct |
114 ms |
56844 KB |
Output is correct |
| 93 |
Correct |
116 ms |
56876 KB |
Output is correct |
| 94 |
Correct |
119 ms |
56868 KB |
Output is correct |
| 95 |
Correct |
106 ms |
56824 KB |
Output is correct |
| 96 |
Correct |
118 ms |
56824 KB |
Output is correct |
| 97 |
Correct |
117 ms |
56868 KB |
Output is correct |
| 98 |
Correct |
116 ms |
56824 KB |
Output is correct |
| 99 |
Correct |
115 ms |
56792 KB |
Output is correct |
| 100 |
Correct |
118 ms |
56780 KB |
Output is correct |
