#include <bits/stdc++.h>
using namespace std;
bool t[2507][2507],r[2507][2507];
int p[2507][2507],d[2507][2507],n,m;
bool provera(int x,int y)
{
for(int i=x;i<=n;i++) for(int j=y;j<=m;j++) r[i][j]=(p[i][j]-p[i-x][j]-p[i][j-y]+p[i-x][j-y]==x*y);
for(int i=n;i>0;i--) for(int j=m;j>0;j--) d[i][j]=r[i][j]+d[i+1][j]+d[i][j+1]-d[i+1][j+1];
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) if(t[i][j] && d[i][j]-d[i+x][j]-d[i][j+y]+d[i+x][j+y]==0) return false;
return true;
}
int main()
{
int lh=2507,lv=2507;
cin>>n>>m;
for(int i=1;i<=n;i++)
{
string s;
cin>>s;
for(int j=1;j<=m;j++) t[i][j]=(s[j-1]=='1'?1:0);
}
for(int i=1;i<=n;i++)
{
int cur=0;
for(int j=1;j<=m;j++)
{
if(t[i][j]==0) {if(cur!=0) lh=min(lh,cur); cur=0;}
else cur++;
}
if(cur!=0) lh=min(lh,cur);
}
for(int i=1;i<=m;i++)
{
int cur=0;
for(int j=1;j<=n;j++)
{
if(t[j][i]==0) {if(cur!=0) lv=min(lv,cur); cur=0;}
else cur++;
}
if(cur!=0) lv=min(lv,cur);
}
int sol=0;
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) p[i][j]=t[i][j]+p[i-1][j]+p[i][j-1]-p[i-1][j-1];
for(int i=1;i<=lv;i++)
{
while(!provera(lh,i)) lh--;
sol=max(sol,lh*i);
}
printf("%d",sol);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Correct |
2 ms |
632 KB |
Output is correct |
3 |
Correct |
49 ms |
32840 KB |
Output is correct |
4 |
Correct |
51 ms |
32840 KB |
Output is correct |
5 |
Incorrect |
3 ms |
32840 KB |
Output isn't correct |
6 |
Incorrect |
3 ms |
32840 KB |
Output isn't correct |
7 |
Correct |
2 ms |
32840 KB |
Output is correct |
8 |
Correct |
3 ms |
32840 KB |
Output is correct |
9 |
Correct |
3 ms |
32840 KB |
Output is correct |
10 |
Correct |
3 ms |
32840 KB |
Output is correct |
11 |
Correct |
3 ms |
32840 KB |
Output is correct |
12 |
Correct |
3 ms |
32840 KB |
Output is correct |
13 |
Incorrect |
3 ms |
32840 KB |
Output isn't correct |
14 |
Correct |
3 ms |
32840 KB |
Output is correct |
15 |
Correct |
3 ms |
32840 KB |
Output is correct |
16 |
Incorrect |
2 ms |
32840 KB |
Output isn't correct |
17 |
Incorrect |
4 ms |
32840 KB |
Output isn't correct |
18 |
Correct |
4 ms |
32840 KB |
Output is correct |
19 |
Runtime error |
12 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
20 |
Runtime error |
11 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
21 |
Correct |
3 ms |
32840 KB |
Output is correct |
22 |
Correct |
4 ms |
32840 KB |
Output is correct |
23 |
Correct |
7 ms |
32840 KB |
Output is correct |
24 |
Runtime error |
10 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
25 |
Correct |
8 ms |
32840 KB |
Output is correct |
26 |
Correct |
5 ms |
32840 KB |
Output is correct |
27 |
Incorrect |
13 ms |
32840 KB |
Output isn't correct |
28 |
Correct |
21 ms |
32840 KB |
Output is correct |
29 |
Runtime error |
143 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
30 |
Correct |
272 ms |
32840 KB |
Output is correct |
31 |
Correct |
158 ms |
32840 KB |
Output is correct |
32 |
Runtime error |
142 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
33 |
Correct |
333 ms |
32840 KB |
Output is correct |
34 |
Correct |
21 ms |
32840 KB |
Output is correct |
35 |
Incorrect |
176 ms |
32840 KB |
Output isn't correct |
36 |
Runtime error |
108 ms |
32840 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
37 |
Incorrect |
2 ms |
32840 KB |
Output isn't correct |
38 |
Execution timed out |
1077 ms |
71368 KB |
Time limit exceeded |
39 |
Correct |
2 ms |
71368 KB |
Output is correct |
40 |
Execution timed out |
1070 ms |
71368 KB |
Time limit exceeded |
41 |
Correct |
3 ms |
71368 KB |
Output is correct |
42 |
Correct |
10 ms |
71368 KB |
Output is correct |
43 |
Execution timed out |
1078 ms |
83176 KB |
Time limit exceeded |
44 |
Correct |
492 ms |
83176 KB |
Output is correct |
45 |
Execution timed out |
1031 ms |
87776 KB |
Time limit exceeded |
46 |
Execution timed out |
1082 ms |
96636 KB |
Time limit exceeded |
47 |
Execution timed out |
1039 ms |
100000 KB |
Time limit exceeded |
48 |
Execution timed out |
1072 ms |
108952 KB |
Time limit exceeded |
49 |
Runtime error |
1008 ms |
132096 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
50 |
Execution timed out |
1093 ms |
132096 KB |
Time limit exceeded |
51 |
Execution timed out |
1059 ms |
132096 KB |
Time limit exceeded |
52 |
Execution timed out |
1092 ms |
132096 KB |
Time limit exceeded |
53 |
Execution timed out |
1038 ms |
132096 KB |
Time limit exceeded |
54 |
Execution timed out |
1033 ms |
132096 KB |
Time limit exceeded |
55 |
Execution timed out |
1040 ms |
132096 KB |
Time limit exceeded |
56 |
Execution timed out |
1041 ms |
132096 KB |
Time limit exceeded |
57 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
58 |
Execution timed out |
1061 ms |
132096 KB |
Time limit exceeded |
59 |
Execution timed out |
1041 ms |
132096 KB |
Time limit exceeded |
60 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
61 |
Execution timed out |
1043 ms |
132096 KB |
Time limit exceeded |
62 |
Execution timed out |
1051 ms |
132096 KB |
Time limit exceeded |
63 |
Execution timed out |
1081 ms |
132096 KB |
Time limit exceeded |
64 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
65 |
Execution timed out |
1044 ms |
132096 KB |
Time limit exceeded |
66 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
67 |
Execution timed out |
1068 ms |
132096 KB |
Time limit exceeded |
68 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
69 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
70 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
71 |
Execution timed out |
1063 ms |
132096 KB |
Time limit exceeded |
72 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
73 |
Execution timed out |
1083 ms |
132096 KB |
Time limit exceeded |
74 |
Execution timed out |
1086 ms |
132096 KB |
Time limit exceeded |
75 |
Execution timed out |
1076 ms |
132096 KB |
Time limit exceeded |
76 |
Execution timed out |
1064 ms |
132096 KB |
Time limit exceeded |
77 |
Execution timed out |
1087 ms |
132096 KB |
Time limit exceeded |
78 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
79 |
Execution timed out |
1090 ms |
132096 KB |
Time limit exceeded |
80 |
Execution timed out |
1082 ms |
132096 KB |
Time limit exceeded |
81 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
82 |
Execution timed out |
1094 ms |
132096 KB |
Time limit exceeded |
83 |
Execution timed out |
1086 ms |
132096 KB |
Time limit exceeded |
84 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
85 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
86 |
Execution timed out |
1090 ms |
132096 KB |
Time limit exceeded |
87 |
Execution timed out |
1082 ms |
132096 KB |
Time limit exceeded |
88 |
Execution timed out |
1094 ms |
132096 KB |
Time limit exceeded |
89 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
90 |
Execution timed out |
1093 ms |
132096 KB |
Time limit exceeded |
91 |
Execution timed out |
1081 ms |
132096 KB |
Time limit exceeded |
92 |
Execution timed out |
1077 ms |
132096 KB |
Time limit exceeded |
93 |
Execution timed out |
1083 ms |
132096 KB |
Time limit exceeded |
94 |
Execution timed out |
1087 ms |
132096 KB |
Time limit exceeded |
95 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
96 |
Execution timed out |
1090 ms |
132096 KB |
Time limit exceeded |
97 |
Execution timed out |
1076 ms |
132096 KB |
Time limit exceeded |
98 |
Execution timed out |
1081 ms |
132096 KB |
Time limit exceeded |
99 |
Execution timed out |
1093 ms |
132096 KB |
Time limit exceeded |
100 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |