| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 88109 |
2018-12-03T20:16:33 Z |
Pajaraja |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
69340 KB |
#include <bits/stdc++.h>
#define MAXN 2507
using namespace std;
bool t[MAXN][MAXN],r[MAXN][MAXN];
int p[MAXN][MAXN],d[MAXN][MAXN],n,m;
char s[MAXN][MAXN];
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[min(n+1,i+x)][j]-d[i][min(m+1,j+y)]+d[min(n+1,i+x)][min(m+1,j+y)]==0) return false;
return true;
}
int main()
{
int lh=2507,lv=2507;
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
{
scanf("%s",s[i]);
for(int j=1;j<=m;j++) t[i][j]=(s[i][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(i,lh)) lh--;
if(sol>lh*n) break;
sol=max(sol,lh*i);
}
printf("%d",sol);
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
~~~~~^~~~~~~~~~~~~~
bomb.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s",s[i]);
~~~~~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
3 ms |
636 KB |
Output is correct |
| 3 |
Correct |
59 ms |
38940 KB |
Output is correct |
| 4 |
Correct |
56 ms |
38940 KB |
Output is correct |
| 5 |
Correct |
2 ms |
38940 KB |
Output is correct |
| 6 |
Correct |
2 ms |
38940 KB |
Output is correct |
| 7 |
Correct |
2 ms |
38940 KB |
Output is correct |
| 8 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 9 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 10 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 11 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 12 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 13 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 14 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 15 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 16 |
Correct |
3 ms |
38940 KB |
Output is correct |
| 17 |
Correct |
4 ms |
38940 KB |
Output is correct |
| 18 |
Correct |
4 ms |
38940 KB |
Output is correct |
| 19 |
Correct |
5 ms |
38940 KB |
Output is correct |
| 20 |
Correct |
6 ms |
38940 KB |
Output is correct |
| 21 |
Correct |
4 ms |
38940 KB |
Output is correct |
| 22 |
Correct |
4 ms |
38940 KB |
Output is correct |
| 23 |
Correct |
6 ms |
38940 KB |
Output is correct |
| 24 |
Correct |
5 ms |
38940 KB |
Output is correct |
| 25 |
Correct |
8 ms |
38940 KB |
Output is correct |
| 26 |
Correct |
5 ms |
38940 KB |
Output is correct |
| 27 |
Correct |
10 ms |
38940 KB |
Output is correct |
| 28 |
Correct |
17 ms |
38940 KB |
Output is correct |
| 29 |
Correct |
123 ms |
38940 KB |
Output is correct |
| 30 |
Correct |
267 ms |
38940 KB |
Output is correct |
| 31 |
Correct |
117 ms |
38940 KB |
Output is correct |
| 32 |
Correct |
154 ms |
38940 KB |
Output is correct |
| 33 |
Correct |
179 ms |
38940 KB |
Output is correct |
| 34 |
Correct |
17 ms |
38940 KB |
Output is correct |
| 35 |
Correct |
185 ms |
38940 KB |
Output is correct |
| 36 |
Correct |
102 ms |
38940 KB |
Output is correct |
| 37 |
Correct |
2 ms |
38940 KB |
Output is correct |
| 38 |
Execution timed out |
1051 ms |
68508 KB |
Time limit exceeded |
| 39 |
Correct |
3 ms |
68508 KB |
Output is correct |
| 40 |
Execution timed out |
1078 ms |
68508 KB |
Time limit exceeded |
| 41 |
Correct |
3 ms |
68508 KB |
Output is correct |
| 42 |
Correct |
9 ms |
68508 KB |
Output is correct |
| 43 |
Execution timed out |
1089 ms |
68576 KB |
Time limit exceeded |
| 44 |
Correct |
473 ms |
68576 KB |
Output is correct |
| 45 |
Execution timed out |
1077 ms |
68576 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1058 ms |
68576 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1047 ms |
68576 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1067 ms |
68576 KB |
Time limit exceeded |
| 49 |
Correct |
467 ms |
68600 KB |
Output is correct |
| 50 |
Execution timed out |
1084 ms |
68600 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1069 ms |
68600 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1066 ms |
68600 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1054 ms |
68600 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1060 ms |
68600 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1074 ms |
68724 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1072 ms |
68804 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1062 ms |
68804 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1074 ms |
68804 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1066 ms |
68804 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1067 ms |
68804 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1084 ms |
68804 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1073 ms |
68932 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1084 ms |
68932 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1081 ms |
68932 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1076 ms |
68932 KB |
Time limit exceeded |
| 66 |
Correct |
767 ms |
68932 KB |
Output is correct |
| 67 |
Execution timed out |
1070 ms |
69052 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1089 ms |
69052 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1080 ms |
69116 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1082 ms |
69116 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1070 ms |
69116 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1075 ms |
69116 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1074 ms |
69116 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1076 ms |
69116 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1082 ms |
69116 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1078 ms |
69116 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1071 ms |
69116 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1086 ms |
69136 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1085 ms |
69256 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1082 ms |
69256 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1087 ms |
69256 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1081 ms |
69264 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1078 ms |
69264 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1084 ms |
69264 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1084 ms |
69264 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1070 ms |
69340 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1087 ms |
69340 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1078 ms |
69340 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1087 ms |
69340 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1081 ms |
69340 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1096 ms |
69340 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1091 ms |
69340 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1086 ms |
69340 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1077 ms |
69340 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1087 ms |
69340 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1071 ms |
69340 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1076 ms |
69340 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1084 ms |
69340 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1064 ms |
69340 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1065 ms |
69340 KB |
Time limit exceeded |
