| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 93830 |
2019-01-11T23:48:39 Z |
dalgerok |
Bomb (IZhO17_bomb) |
C++14 |
|
465 ms |
61688 KB |
#include<bits/stdc++.h>
using namespace std;
const int N = 2505, INF = 2e9;
int n, m, dn[N][N], up[N][N];
char a[N][N];
int dp[N];
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> a[i][j];
}
}
int mnw = INF, mnh = INF;
for(int i = 1; i <= n; i++){
int cur = 0;
for(int j = 1; j <= m; j++){
if(a[i][j] == '1'){
cur += 1;
}
else if(cur > 0){
mnw = min(mnw, cur);
cur = 0;
}
}
if(cur > 0){
mnw = min(mnw, cur);
}
}
for(int j = 1; j <= m; j++){
int cur = 0;
for(int i = 1; i <= n; i++){
if(a[i][j] == '1'){
cur += 1;
}
else if(cur > 0){
mnh = min(mnh, cur);
cur = 0;
}
}
if(cur > 0){
mnh = min(mnh, cur);
}
}
for(int j = 1; j <= m; j++){
for(int i = 1; i <= n; i++){
if(a[i][j] == '1'){
up[i][j] = up[i - 1][j] + 1;
}
}
for(int i = n; i >= 1; i--){
if(a[i][j] == '1'){
dn[i][j] = dn[i + 1][j] + 1;
}
}
}
for(int i = 1; i <= mnw; i++){
dp[i] = mnh;
}
for(int i = 1; i <= n; i++){
int l = INF, r = INF, cur = 0;
for(int j = 1; j <= m; j++){
if(a[i][j] == '1'){
l = min(l, up[i][j]);
r = min(r, dn[i][j]);
cur += 1;
dp[cur] = min(dp[cur], l + r - 1);
}
else{
l = r = INF;
cur = 0;
}
}
l = r = INF;
cur = 0;
for(int j = m; j >= 1; j--){
if(a[i][j] == '1'){
l = min(l, up[i][j]);
r = min(r, dn[i][j]);
cur += 1;
dp[cur] = min(dp[cur], l + r - 1);
}
else{
l = r = INF;
cur = 0;
}
}
}
int ans = dp[1];
for(int i = 2; i <= mnw; i++){
dp[i] = min(dp[i], dp[i - 1]);
ans = max(ans, dp[i] * i);
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
380 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
18 ms |
26516 KB |
Output is correct |
| 4 |
Correct |
17 ms |
26488 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Correct |
2 ms |
504 KB |
Output is correct |
| 9 |
Correct |
2 ms |
504 KB |
Output is correct |
| 10 |
Correct |
2 ms |
504 KB |
Output is correct |
| 11 |
Correct |
2 ms |
504 KB |
Output is correct |
| 12 |
Correct |
2 ms |
504 KB |
Output is correct |
| 13 |
Correct |
2 ms |
504 KB |
Output is correct |
| 14 |
Correct |
2 ms |
504 KB |
Output is correct |
| 15 |
Correct |
2 ms |
508 KB |
Output is correct |
| 16 |
Correct |
2 ms |
504 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 18 |
Correct |
2 ms |
888 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 21 |
Correct |
2 ms |
632 KB |
Output is correct |
| 22 |
Correct |
2 ms |
888 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1144 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1016 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1400 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 27 |
Correct |
6 ms |
4088 KB |
Output is correct |
| 28 |
Correct |
4 ms |
1528 KB |
Output is correct |
| 29 |
Correct |
8 ms |
5240 KB |
Output is correct |
| 30 |
Correct |
7 ms |
4324 KB |
Output is correct |
| 31 |
Correct |
6 ms |
3064 KB |
Output is correct |
| 32 |
Correct |
7 ms |
4216 KB |
Output is correct |
| 33 |
Correct |
9 ms |
5368 KB |
Output is correct |
| 34 |
Correct |
4 ms |
1768 KB |
Output is correct |
| 35 |
Correct |
6 ms |
2168 KB |
Output is correct |
| 36 |
Correct |
11 ms |
6776 KB |
Output is correct |
| 37 |
Correct |
2 ms |
632 KB |
Output is correct |
| 38 |
Correct |
465 ms |
61432 KB |
Output is correct |
| 39 |
Correct |
2 ms |
632 KB |
Output is correct |
| 40 |
Correct |
36 ms |
16160 KB |
Output is correct |
| 41 |
Correct |
2 ms |
632 KB |
Output is correct |
| 42 |
Correct |
2 ms |
1528 KB |
Output is correct |
| 43 |
Correct |
289 ms |
57592 KB |
Output is correct |
| 44 |
Correct |
9 ms |
6136 KB |
Output is correct |
| 45 |
Correct |
273 ms |
59000 KB |
Output is correct |
| 46 |
Correct |
270 ms |
61432 KB |
Output is correct |
| 47 |
Correct |
277 ms |
59000 KB |
Output is correct |
| 48 |
Correct |
264 ms |
61532 KB |
Output is correct |
| 49 |
Correct |
349 ms |
61432 KB |
Output is correct |
| 50 |
Correct |
374 ms |
61688 KB |
Output is correct |
| 51 |
Correct |
265 ms |
61432 KB |
Output is correct |
| 52 |
Correct |
274 ms |
61432 KB |
Output is correct |
| 53 |
Correct |
263 ms |
60808 KB |
Output is correct |
| 54 |
Correct |
208 ms |
48248 KB |
Output is correct |
| 55 |
Correct |
219 ms |
46456 KB |
Output is correct |
| 56 |
Correct |
354 ms |
61532 KB |
Output is correct |
| 57 |
Correct |
200 ms |
41444 KB |
Output is correct |
| 58 |
Correct |
228 ms |
46560 KB |
Output is correct |
| 59 |
Correct |
209 ms |
43504 KB |
Output is correct |
| 60 |
Correct |
274 ms |
53240 KB |
Output is correct |
| 61 |
Correct |
370 ms |
61432 KB |
Output is correct |
| 62 |
Correct |
377 ms |
61432 KB |
Output is correct |
| 63 |
Correct |
387 ms |
61560 KB |
Output is correct |
| 64 |
Correct |
201 ms |
44280 KB |
Output is correct |
| 65 |
Correct |
290 ms |
60404 KB |
Output is correct |
| 66 |
Correct |
283 ms |
57316 KB |
Output is correct |
| 67 |
Correct |
291 ms |
61484 KB |
Output is correct |
| 68 |
Correct |
339 ms |
61560 KB |
Output is correct |
| 69 |
Correct |
219 ms |
41080 KB |
Output is correct |
| 70 |
Correct |
103 ms |
19064 KB |
Output is correct |
| 71 |
Correct |
166 ms |
34168 KB |
Output is correct |
| 72 |
Correct |
187 ms |
39672 KB |
Output is correct |
| 73 |
Correct |
202 ms |
40184 KB |
Output is correct |
| 74 |
Correct |
202 ms |
41592 KB |
Output is correct |
| 75 |
Correct |
201 ms |
43228 KB |
Output is correct |
| 76 |
Correct |
203 ms |
44508 KB |
Output is correct |
| 77 |
Correct |
207 ms |
45080 KB |
Output is correct |
| 78 |
Correct |
226 ms |
45304 KB |
Output is correct |
| 79 |
Correct |
133 ms |
17784 KB |
Output is correct |
| 80 |
Correct |
133 ms |
19064 KB |
Output is correct |
| 81 |
Correct |
156 ms |
19396 KB |
Output is correct |
| 82 |
Correct |
229 ms |
47820 KB |
Output is correct |
| 83 |
Correct |
214 ms |
47868 KB |
Output is correct |
| 84 |
Correct |
120 ms |
13048 KB |
Output is correct |
| 85 |
Correct |
220 ms |
46980 KB |
Output is correct |
| 86 |
Correct |
339 ms |
60524 KB |
Output is correct |
| 87 |
Correct |
204 ms |
45784 KB |
Output is correct |
| 88 |
Correct |
215 ms |
46908 KB |
Output is correct |
| 89 |
Correct |
252 ms |
55416 KB |
Output is correct |
| 90 |
Correct |
116 ms |
33272 KB |
Output is correct |
| 91 |
Correct |
220 ms |
50540 KB |
Output is correct |
| 92 |
Correct |
260 ms |
52172 KB |
Output is correct |
| 93 |
Correct |
332 ms |
59476 KB |
Output is correct |
| 94 |
Correct |
252 ms |
54140 KB |
Output is correct |
| 95 |
Correct |
210 ms |
47992 KB |
Output is correct |
| 96 |
Correct |
227 ms |
47736 KB |
Output is correct |
| 97 |
Correct |
330 ms |
60320 KB |
Output is correct |
| 98 |
Correct |
209 ms |
47480 KB |
Output is correct |
| 99 |
Correct |
270 ms |
53752 KB |
Output is correct |
| 100 |
Correct |
336 ms |
59128 KB |
Output is correct |
