#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;
#define ll long long
#define rep(i,n,N) for(int i = n; i<=N; ++i)
#define rap(i,n,N) for(int i = n; i>=N; --i)
#define For(i,n,N) for(int i = n; i< N; ++i)
#define endl '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define mems(x,y) memset(x,y,sizeof x)
#define ari(x) array<int,x>
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fi first
#define se second
const int MAX = 2500 + 5;
mt19937 rng(time(NULL));
int n,m,mnr,mnc,cnt,y[MAX][MAX],z[MAX][MAX],ans,res;
char c;
bool x[MAX][MAX];
vector<ari(3)> v;
inline int fr(int k){
int ret = n;
rep(j,k,m){
rep(i,1,n){
if(z[i][j]-z[i][j-k]==k)++cnt;
else if(cnt)ret = min(ret, cnt), cnt = 0;
}
if(cnt)ret = min(ret, cnt), cnt = 0;
}
return ret;
}
inline int fc(int k){
int ret = m;
rep(i,k,n){
rep(j,1,m){
if(y[i][j]-y[i-k][j]==k)++cnt;
else if(cnt)ret = min(ret, cnt), cnt = 0;
}
if(cnt)ret = min(ret, cnt), cnt = 0;
}
return ret;
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n>>m;
mnr = n, mnc = m;
rep(i,1,n){
rep(j,1,m){
cin>>c;
x[i][j] = c=='1';
y[i][j] = y[i-1][j]+x[i][j];
z[i][j] = z[i][j-1]+x[i][j];
if(x[i][j])++cnt;
else if(cnt)mnc = min(mnc, cnt), cnt = 0;
}
if(cnt)mnc = min(mnc, cnt), cnt = 0;
}
rep(j,1,m){
rep(i,1,n){
if(x[i][j])++cnt;
else if(cnt)mnr = min(mnr, cnt), cnt = 0;
}
if(cnt)mnr = min(mnr, cnt), cnt = 0;
}
int r = 1, c = mnc;
ans = max(mnr, mnc);
while(c > 1){
res = fr(c);
ans = max(ans, res*c);
r = max(r+1, res);
while(r<=mnr && r*c<=ans)++r;
if(r>mnr)break;
res = fc(r);
ans = max(ans, res*r);
c = min(c-1, res);
}
cout<<ans<<endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
468 KB |
Output is correct |
| 3 |
Correct |
12 ms |
26460 KB |
Output is correct |
| 4 |
Correct |
12 ms |
26540 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
468 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 10 |
Correct |
0 ms |
468 KB |
Output is correct |
| 11 |
Correct |
0 ms |
468 KB |
Output is correct |
| 12 |
Correct |
0 ms |
468 KB |
Output is correct |
| 13 |
Correct |
0 ms |
468 KB |
Output is correct |
| 14 |
Correct |
0 ms |
468 KB |
Output is correct |
| 15 |
Correct |
0 ms |
468 KB |
Output is correct |
| 16 |
Correct |
0 ms |
468 KB |
Output is correct |
| 17 |
Incorrect |
1 ms |
980 KB |
Output isn't correct |
| 18 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
1364 KB |
Output isn't correct |
| 21 |
Correct |
1 ms |
852 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 23 |
Incorrect |
1 ms |
1364 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
1236 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
1364 KB |
Output isn't correct |
| 26 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4052 KB |
Output is correct |
| 28 |
Correct |
4 ms |
4180 KB |
Output is correct |
| 29 |
Correct |
9 ms |
5332 KB |
Output is correct |
| 30 |
Incorrect |
5 ms |
6228 KB |
Output isn't correct |
| 31 |
Incorrect |
5 ms |
5028 KB |
Output isn't correct |
| 32 |
Incorrect |
7 ms |
5716 KB |
Output isn't correct |
| 33 |
Incorrect |
6 ms |
6612 KB |
Output isn't correct |
| 34 |
Correct |
4 ms |
4692 KB |
Output is correct |
| 35 |
Incorrect |
9 ms |
6740 KB |
Output isn't correct |
| 36 |
Incorrect |
6 ms |
6612 KB |
Output isn't correct |
| 37 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 38 |
Correct |
89 ms |
55364 KB |
Output is correct |
| 39 |
Incorrect |
0 ms |
468 KB |
Output isn't correct |
| 40 |
Incorrect |
21 ms |
15548 KB |
Output isn't correct |
| 41 |
Incorrect |
0 ms |
468 KB |
Output isn't correct |
| 42 |
Incorrect |
1 ms |
1364 KB |
Output isn't correct |
| 43 |
Correct |
151 ms |
55456 KB |
Output is correct |
| 44 |
Incorrect |
25 ms |
6612 KB |
Output isn't correct |
| 45 |
Execution timed out |
1083 ms |
55368 KB |
Time limit exceeded |
| 46 |
Correct |
136 ms |
55480 KB |
Output is correct |
| 47 |
Execution timed out |
1094 ms |
55428 KB |
Time limit exceeded |
| 48 |
Incorrect |
196 ms |
55564 KB |
Output isn't correct |
| 49 |
Correct |
149 ms |
55400 KB |
Output is correct |
| 50 |
Incorrect |
217 ms |
55468 KB |
Output isn't correct |
| 51 |
Incorrect |
200 ms |
55452 KB |
Output isn't correct |
| 52 |
Incorrect |
202 ms |
55472 KB |
Output isn't correct |
| 53 |
Incorrect |
211 ms |
55400 KB |
Output isn't correct |
| 54 |
Execution timed out |
1085 ms |
55380 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1078 ms |
55392 KB |
Time limit exceeded |
| 56 |
Correct |
140 ms |
55348 KB |
Output is correct |
| 57 |
Execution timed out |
1093 ms |
55532 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1091 ms |
55376 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1088 ms |
55372 KB |
Time limit exceeded |
| 60 |
Correct |
147 ms |
55468 KB |
Output is correct |
| 61 |
Correct |
143 ms |
55400 KB |
Output is correct |
| 62 |
Correct |
178 ms |
55476 KB |
Output is correct |
| 63 |
Correct |
157 ms |
55412 KB |
Output is correct |
| 64 |
Correct |
145 ms |
55432 KB |
Output is correct |
| 65 |
Incorrect |
210 ms |
55468 KB |
Output isn't correct |
| 66 |
Incorrect |
229 ms |
55476 KB |
Output isn't correct |
| 67 |
Incorrect |
212 ms |
55472 KB |
Output isn't correct |
| 68 |
Incorrect |
232 ms |
55412 KB |
Output isn't correct |
| 69 |
Execution timed out |
1101 ms |
55376 KB |
Time limit exceeded |
| 70 |
Incorrect |
190 ms |
44452 KB |
Output isn't correct |
| 71 |
Incorrect |
330 ms |
55472 KB |
Output isn't correct |
| 72 |
Incorrect |
342 ms |
55436 KB |
Output isn't correct |
| 73 |
Incorrect |
323 ms |
55472 KB |
Output isn't correct |
| 74 |
Incorrect |
279 ms |
55468 KB |
Output isn't correct |
| 75 |
Incorrect |
372 ms |
55468 KB |
Output isn't correct |
| 76 |
Incorrect |
276 ms |
55372 KB |
Output isn't correct |
| 77 |
Incorrect |
350 ms |
55472 KB |
Output isn't correct |
| 78 |
Incorrect |
321 ms |
55352 KB |
Output isn't correct |
| 79 |
Incorrect |
139 ms |
55448 KB |
Output isn't correct |
| 80 |
Incorrect |
144 ms |
55468 KB |
Output isn't correct |
| 81 |
Incorrect |
259 ms |
55420 KB |
Output isn't correct |
| 82 |
Incorrect |
328 ms |
55472 KB |
Output isn't correct |
| 83 |
Incorrect |
269 ms |
55472 KB |
Output isn't correct |
| 84 |
Incorrect |
199 ms |
55468 KB |
Output isn't correct |
| 85 |
Incorrect |
310 ms |
55468 KB |
Output isn't correct |
| 86 |
Correct |
199 ms |
55508 KB |
Output is correct |
| 87 |
Correct |
207 ms |
55436 KB |
Output is correct |
| 88 |
Incorrect |
318 ms |
55440 KB |
Output isn't correct |
| 89 |
Incorrect |
317 ms |
55420 KB |
Output isn't correct |
| 90 |
Incorrect |
155 ms |
44456 KB |
Output isn't correct |
| 91 |
Incorrect |
259 ms |
55476 KB |
Output isn't correct |
| 92 |
Incorrect |
324 ms |
55656 KB |
Output isn't correct |
| 93 |
Incorrect |
284 ms |
55472 KB |
Output isn't correct |
| 94 |
Incorrect |
320 ms |
55520 KB |
Output isn't correct |
| 95 |
Incorrect |
331 ms |
55476 KB |
Output isn't correct |
| 96 |
Incorrect |
336 ms |
55468 KB |
Output isn't correct |
| 97 |
Incorrect |
244 ms |
55384 KB |
Output isn't correct |
| 98 |
Incorrect |
344 ms |
55436 KB |
Output isn't correct |
| 99 |
Incorrect |
324 ms |
55468 KB |
Output isn't correct |
| 100 |
Incorrect |
245 ms |
55472 KB |
Output isn't correct |
