#include<bits/stdc++.h>
using namespace std;
const int inf = 1000000000;
char c1[2505][2505],c2[2505][2505];
int n,m,l,r,bolo;
int lf[2505][2505],rg[2505][ 2505],zr[2505];
pair<int, int> ans;
int main(){
scanf("%d%d",&n,&m);
for(int i=1;i<=n;++i) scanf("%s", &c1[i][1]);
for(int i=0;i<2505;++i) zr[i] = inf;
for(int i=0;i<2;++i) {
memset((lf), 0, sizeof(lf));
memset((rg), 0, sizeof(rg));
for(int i=1;i<=n;++i){
for(int j=1;j<=m;++j)
if(c1[i][j] == '1') lf[i][j] = lf[i][j-1] + 1;
for(int j=m;j>=1;--j)
if(c1[i][j] == '1') rg[i][j] = rg[i][j+1] + 1;
for(int j=1;j<=m;++j)
if(c1[i][j] == '1' && c1[i][j+1] != '1') zr[1] = min(zr[1], lf[i][j]);
}
for(int j=1;j<=m;++j)
for(int i=0;i<=n+1;++i)
if(c1[i][j] == '1') {
l = min(l, lf[i][j]); r = min(r, rg[i][j]);
zr[i - bolo] = min(zr[i - bolo], l + r - 1);
} else {
if(i && bolo != i-1) zr[i - bolo] = 0;
l = inf; r = inf; bolo = i;
}
for(int i=1;i<=n;++i)
for(int j=1;j<=m;++j)
c2[i][j] = c1[n+1-i][j];
for(int i=1;i<=n;++i)
for(int j=1;j<=m;++j)
c1[i][j] = c2[i][j];
}
int b = inf;
for(int a=1;a<=2504;++a) {
b = min(b, zr[a]);
ans = max(ans, {a*b, b});
}
cout << ans.first<< endl;
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:10:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
^
bomb.cpp:11:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=1;i<=n;++i) scanf("%s", &c1[i][1]);
^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 2 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 3 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 4 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 5 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 6 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 7 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 8 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 9 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 10 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 11 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 12 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 13 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 14 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 15 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 16 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 17 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 18 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 19 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 20 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 21 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 22 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 23 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 24 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 25 |
Correct |
23 ms |
63304 KB |
Output is correct |
| 26 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 27 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 28 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 29 |
Correct |
23 ms |
63304 KB |
Output is correct |
| 30 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 31 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 32 |
Correct |
23 ms |
63304 KB |
Output is correct |
| 33 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 34 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 35 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 36 |
Correct |
23 ms |
63304 KB |
Output is correct |
| 37 |
Correct |
9 ms |
63304 KB |
Output is correct |
| 38 |
Correct |
769 ms |
63304 KB |
Output is correct |
| 39 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 40 |
Correct |
83 ms |
63304 KB |
Output is correct |
| 41 |
Correct |
13 ms |
63304 KB |
Output is correct |
| 42 |
Correct |
16 ms |
63304 KB |
Output is correct |
| 43 |
Correct |
549 ms |
63304 KB |
Output is correct |
| 44 |
Correct |
19 ms |
63304 KB |
Output is correct |
| 45 |
Correct |
533 ms |
63304 KB |
Output is correct |
| 46 |
Correct |
449 ms |
63304 KB |
Output is correct |
| 47 |
Correct |
513 ms |
63304 KB |
Output is correct |
| 48 |
Correct |
496 ms |
63304 KB |
Output is correct |
| 49 |
Correct |
756 ms |
63304 KB |
Output is correct |
| 50 |
Correct |
496 ms |
63304 KB |
Output is correct |
| 51 |
Correct |
479 ms |
63304 KB |
Output is correct |
| 52 |
Correct |
493 ms |
63304 KB |
Output is correct |
| 53 |
Correct |
483 ms |
63304 KB |
Output is correct |
| 54 |
Correct |
316 ms |
63304 KB |
Output is correct |
| 55 |
Correct |
329 ms |
63304 KB |
Output is correct |
| 56 |
Correct |
746 ms |
63304 KB |
Output is correct |
| 57 |
Correct |
336 ms |
63304 KB |
Output is correct |
| 58 |
Correct |
306 ms |
63304 KB |
Output is correct |
| 59 |
Correct |
323 ms |
63304 KB |
Output is correct |
| 60 |
Correct |
469 ms |
63304 KB |
Output is correct |
| 61 |
Correct |
746 ms |
63304 KB |
Output is correct |
| 62 |
Correct |
759 ms |
63304 KB |
Output is correct |
| 63 |
Correct |
763 ms |
63304 KB |
Output is correct |
| 64 |
Correct |
299 ms |
63304 KB |
Output is correct |
| 65 |
Correct |
466 ms |
63304 KB |
Output is correct |
| 66 |
Correct |
493 ms |
63304 KB |
Output is correct |
| 67 |
Correct |
549 ms |
63304 KB |
Output is correct |
| 68 |
Correct |
569 ms |
63304 KB |
Output is correct |
| 69 |
Correct |
303 ms |
63304 KB |
Output is correct |
| 70 |
Correct |
149 ms |
63304 KB |
Output is correct |
| 71 |
Correct |
246 ms |
63304 KB |
Output is correct |
| 72 |
Correct |
306 ms |
63304 KB |
Output is correct |
| 73 |
Correct |
349 ms |
63304 KB |
Output is correct |
| 74 |
Correct |
306 ms |
63304 KB |
Output is correct |
| 75 |
Correct |
296 ms |
63304 KB |
Output is correct |
| 76 |
Correct |
289 ms |
63304 KB |
Output is correct |
| 77 |
Correct |
316 ms |
63304 KB |
Output is correct |
| 78 |
Correct |
296 ms |
63304 KB |
Output is correct |
| 79 |
Correct |
136 ms |
63304 KB |
Output is correct |
| 80 |
Correct |
146 ms |
63304 KB |
Output is correct |
| 81 |
Correct |
153 ms |
63304 KB |
Output is correct |
| 82 |
Correct |
356 ms |
63304 KB |
Output is correct |
| 83 |
Correct |
313 ms |
63304 KB |
Output is correct |
| 84 |
Correct |
126 ms |
63304 KB |
Output is correct |
| 85 |
Correct |
293 ms |
63304 KB |
Output is correct |
| 86 |
Correct |
663 ms |
63304 KB |
Output is correct |
| 87 |
Correct |
296 ms |
63304 KB |
Output is correct |
| 88 |
Correct |
326 ms |
63304 KB |
Output is correct |
| 89 |
Correct |
436 ms |
63304 KB |
Output is correct |
| 90 |
Correct |
176 ms |
63304 KB |
Output is correct |
| 91 |
Correct |
366 ms |
63304 KB |
Output is correct |
| 92 |
Correct |
416 ms |
63304 KB |
Output is correct |
| 93 |
Correct |
736 ms |
63304 KB |
Output is correct |
| 94 |
Correct |
456 ms |
63304 KB |
Output is correct |
| 95 |
Correct |
359 ms |
63304 KB |
Output is correct |
| 96 |
Correct |
389 ms |
63304 KB |
Output is correct |
| 97 |
Correct |
706 ms |
63304 KB |
Output is correct |
| 98 |
Correct |
346 ms |
63304 KB |
Output is correct |
| 99 |
Correct |
439 ms |
63304 KB |
Output is correct |
| 100 |
Correct |
676 ms |
63304 KB |
Output is correct |
