| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 333923 |
2020-12-08T03:20:58 Z |
juggernaut |
Bomb (IZhO17_bomb) |
C++14 |
|
1000 ms |
31156 KB |
#include<bits/stdc++.h>
using namespace std;
int n,m,mx,cnt[2505][2505],pref[2505][2505];
bool a[2505][2505];
char rd(){
char ch;
do{
scanf("%c",&ch);
}while(ch!='0'&&ch!='1');
return ch;
}
bool sum(int x,int y,int x2,int y2){
return (cnt[x2][y2]-cnt[x2][y-1]-cnt[x-1][y2]+cnt[x-1][y-1])==((x2-x+1)*(y2-y+1));
}
bool check(int x,int y){
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)pref[i][j]=0;
for(int i=1;i+x-1<=n;i++)
for(int j=1;j+y-1<=m;j++)
if(sum(i,j,i+x-1,j+y-1)){
for(int k=i;k<=i+x-1;k++)pref[k][j]++,pref[k][j+y]--;
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
pref[i][j]+=pref[i][j-1];
if(a[i][j]&&!pref[i][j])return false;
}
}
return true;
}
int main(){
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++){
a[i][j]=(rd()=='1');
cnt[i][j]=cnt[i-1][j]+cnt[i][j-1]-cnt[i-1][j-1]+a[i][j];
}
if(n<m){
for(int x=1;x<=m;x++){
int l=1,r=n;
while(l<r){
int mid=(l+r+1)>>1;
if(check(mid,x))l=mid;
else r=mid-1;
}
if(!check(l,x))l=0;
mx=max(mx,x*l);
}
printf("%d",mx);
}
}
Compilation message
bomb.cpp: In function 'char rd()':
bomb.cpp:8:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
8 | scanf("%c",&ch);
| ~~~~~^~~~~~~~~~
bomb.cpp: In function 'int main()':
bomb.cpp:32:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
32 | scanf("%d%d",&n,&m);
| ~~~~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 3 |
Incorrect |
10 ms |
16492 KB |
Output isn't correct |
| 4 |
Incorrect |
11 ms |
16492 KB |
Output isn't correct |
| 5 |
Correct |
8 ms |
364 KB |
Output is correct |
| 6 |
Correct |
3 ms |
404 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 11 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 15 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 17 |
Correct |
5 ms |
1004 KB |
Output is correct |
| 18 |
Incorrect |
1 ms |
748 KB |
Output isn't correct |
| 19 |
Incorrect |
1 ms |
1004 KB |
Output isn't correct |
| 20 |
Incorrect |
1 ms |
1004 KB |
Output isn't correct |
| 21 |
Correct |
5 ms |
876 KB |
Output is correct |
| 22 |
Correct |
9 ms |
1132 KB |
Output is correct |
| 23 |
Incorrect |
2 ms |
1004 KB |
Output isn't correct |
| 24 |
Incorrect |
2 ms |
876 KB |
Output isn't correct |
| 25 |
Incorrect |
2 ms |
1004 KB |
Output isn't correct |
| 26 |
Incorrect |
1 ms |
1004 KB |
Output isn't correct |
| 27 |
Incorrect |
6 ms |
2540 KB |
Output isn't correct |
| 28 |
Correct |
515 ms |
4308 KB |
Output is correct |
| 29 |
Incorrect |
8 ms |
3308 KB |
Output isn't correct |
| 30 |
Execution timed out |
1030 ms |
6252 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1002 ms |
5064 KB |
Time limit exceeded |
| 32 |
Incorrect |
10 ms |
3564 KB |
Output isn't correct |
| 33 |
Incorrect |
12 ms |
4064 KB |
Output isn't correct |
| 34 |
Incorrect |
6 ms |
2924 KB |
Output isn't correct |
| 35 |
Incorrect |
13 ms |
4076 KB |
Output isn't correct |
| 36 |
Incorrect |
13 ms |
4076 KB |
Output isn't correct |
| 37 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 38 |
Incorrect |
337 ms |
30948 KB |
Output isn't correct |
| 39 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 40 |
Execution timed out |
1082 ms |
15596 KB |
Time limit exceeded |
| 41 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 42 |
Incorrect |
2 ms |
1004 KB |
Output isn't correct |
| 43 |
Incorrect |
388 ms |
31084 KB |
Output isn't correct |
| 44 |
Incorrect |
13 ms |
4076 KB |
Output isn't correct |
| 45 |
Incorrect |
397 ms |
30928 KB |
Output isn't correct |
| 46 |
Incorrect |
357 ms |
30956 KB |
Output isn't correct |
| 47 |
Incorrect |
383 ms |
30956 KB |
Output isn't correct |
| 48 |
Incorrect |
324 ms |
31084 KB |
Output isn't correct |
| 49 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 50 |
Incorrect |
340 ms |
30956 KB |
Output isn't correct |
| 51 |
Incorrect |
331 ms |
30956 KB |
Output isn't correct |
| 52 |
Incorrect |
327 ms |
30956 KB |
Output isn't correct |
| 53 |
Incorrect |
322 ms |
30956 KB |
Output isn't correct |
| 54 |
Incorrect |
322 ms |
31084 KB |
Output isn't correct |
| 55 |
Incorrect |
342 ms |
31108 KB |
Output isn't correct |
| 56 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 57 |
Incorrect |
320 ms |
30956 KB |
Output isn't correct |
| 58 |
Incorrect |
326 ms |
31084 KB |
Output isn't correct |
| 59 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 60 |
Incorrect |
324 ms |
30956 KB |
Output isn't correct |
| 61 |
Incorrect |
334 ms |
31084 KB |
Output isn't correct |
| 62 |
Incorrect |
326 ms |
31084 KB |
Output isn't correct |
| 63 |
Incorrect |
325 ms |
31084 KB |
Output isn't correct |
| 64 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 65 |
Incorrect |
330 ms |
31084 KB |
Output isn't correct |
| 66 |
Incorrect |
328 ms |
31084 KB |
Output isn't correct |
| 67 |
Incorrect |
339 ms |
31084 KB |
Output isn't correct |
| 68 |
Incorrect |
322 ms |
30956 KB |
Output isn't correct |
| 69 |
Incorrect |
320 ms |
31084 KB |
Output isn't correct |
| 70 |
Incorrect |
208 ms |
24812 KB |
Output isn't correct |
| 71 |
Incorrect |
325 ms |
30956 KB |
Output isn't correct |
| 72 |
Incorrect |
343 ms |
31156 KB |
Output isn't correct |
| 73 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 74 |
Incorrect |
328 ms |
31068 KB |
Output isn't correct |
| 75 |
Incorrect |
329 ms |
30956 KB |
Output isn't correct |
| 76 |
Incorrect |
324 ms |
30944 KB |
Output isn't correct |
| 77 |
Incorrect |
323 ms |
30956 KB |
Output isn't correct |
| 78 |
Incorrect |
321 ms |
30956 KB |
Output isn't correct |
| 79 |
Incorrect |
336 ms |
30920 KB |
Output isn't correct |
| 80 |
Incorrect |
318 ms |
30956 KB |
Output isn't correct |
| 81 |
Incorrect |
338 ms |
30984 KB |
Output isn't correct |
| 82 |
Incorrect |
331 ms |
31084 KB |
Output isn't correct |
| 83 |
Incorrect |
321 ms |
30956 KB |
Output isn't correct |
| 84 |
Incorrect |
343 ms |
31084 KB |
Output isn't correct |
| 85 |
Incorrect |
321 ms |
30956 KB |
Output isn't correct |
| 86 |
Incorrect |
324 ms |
30956 KB |
Output isn't correct |
| 87 |
Incorrect |
321 ms |
31084 KB |
Output isn't correct |
| 88 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 89 |
Incorrect |
327 ms |
30900 KB |
Output isn't correct |
| 90 |
Incorrect |
208 ms |
24812 KB |
Output isn't correct |
| 91 |
Incorrect |
327 ms |
30956 KB |
Output isn't correct |
| 92 |
Incorrect |
323 ms |
31016 KB |
Output isn't correct |
| 93 |
Incorrect |
319 ms |
30956 KB |
Output isn't correct |
| 94 |
Incorrect |
340 ms |
30956 KB |
Output isn't correct |
| 95 |
Incorrect |
328 ms |
30956 KB |
Output isn't correct |
| 96 |
Incorrect |
322 ms |
31084 KB |
Output isn't correct |
| 97 |
Incorrect |
323 ms |
31012 KB |
Output isn't correct |
| 98 |
Incorrect |
325 ms |
30896 KB |
Output isn't correct |
| 99 |
Incorrect |
324 ms |
31084 KB |
Output isn't correct |
| 100 |
Incorrect |
326 ms |
30996 KB |
Output isn't correct |
