| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 37226 |
2017-12-22T17:49:48 Z |
alenam0161 |
Bomb (IZhO17_bomb) |
C++14 |
|
496 ms |
61440 KB |
#include <iostream>
#include <fstream>
#include <set>
#include <map>
#include <string>
#include <vector>
#include <bitset>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <cmath>
#include <cassert>
#include <queue>
#define mp make_pair
#define pb push_back
typedef long long ll;
typedef long double ld;
using namespace std;
const int MAXN = 2600;
int n, m;
char s[MAXN][MAXN];
int ans[MAXN];
int up[MAXN][MAXN];
int dw[MAXN][MAXN];
int main() {
// freopen("bomb.in","r",stdin);
// freopen("bomb.out","w",stdout);
scanf("%d%d", &n, &m);
for (int i = 0; i < n; ++i)
scanf(" %s", s[i]);
int mxh = n;
int mxw = m;
for (int i = 0; i < n; ++i) {
int cnt = 0;
for (int j = 0; j < m; ++j) {
if (s[i][j] == '1')
++cnt;
if (s[i][j] == '1' && (j == m - 1 || s[i][j + 1] == '0')) {
mxw = min(mxw, cnt);
cnt = 0;
}
}
}
for (int i = 0; i < m; ++i) {
int cnt = 0;
for (int j = 0; j < n; ++j) {
if (s[j][i] == '1')
++cnt, up[j][i] = cnt;
if (s[j][i] == '1' && (j == n - 1 || s[j + 1][i] == '0')) {
mxh = min(mxh, cnt);
cnt = 0;
}
}
}
for (int i = 0; i < m; ++i) {
int cnt = 0;
for (int j = n - 1; j >= 0; --j) {
if (s[j][i] == '1')
++cnt, dw[j][i] = cnt;
else
cnt = 0;
}
}
for (int i = 0; i <= mxw; ++i)
ans[i] = mxh;
for (int i = 0; i < n; ++i) {
int a = MAXN;
int b = MAXN;
int cnt = 0;
for (int j = 0; j < m; ++j) {
if (s[i][j] == '1') {
a = min(a, up[i][j]);
b = min(b, dw[i][j]);
++cnt;
ans[cnt] = min(ans[cnt], a + b - 1);
}
else {
a = MAXN;
b = MAXN;
cnt = 0;
}
}
}
for (int i = 0; i < n; ++i) {
int a = MAXN;
int b = MAXN;
int cnt = 0;
for (int j = m - 1; j >= 0; --j) {
if (s[i][j] == '1') {
a = min(a, up[i][j]);
b = min(b, dw[i][j]);
++cnt;
ans[cnt] = min(ans[cnt], a + b - 1);
}
else {
a = MAXN;
b = MAXN;
cnt = 0;
}
}
}
for (int i = 1; i <= mxw; ++i)
ans[i] = min(ans[i], ans[i - 1]);
int mh = 0;
int mw = 0;
for (int i = 1; i <= mxw; ++i)
if (mh * mw < i * ans[i])
mw = i, mh = ans[i];
cout << mh * mw << "\n";
return 0;
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:34:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
^
bomb.cpp:36:21: 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 |
0 ms |
61440 KB |
Output is correct |
| 2 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 3 |
Correct |
6 ms |
61440 KB |
Output is correct |
| 4 |
Correct |
3 ms |
61440 KB |
Output is correct |
| 5 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 6 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 7 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 8 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 9 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 10 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 11 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 12 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 13 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 14 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 15 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 16 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 17 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 18 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 19 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 20 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 21 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 22 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 23 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 24 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 25 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 26 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 27 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 28 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 29 |
Correct |
3 ms |
61440 KB |
Output is correct |
| 30 |
Correct |
3 ms |
61440 KB |
Output is correct |
| 31 |
Correct |
3 ms |
61440 KB |
Output is correct |
| 32 |
Correct |
3 ms |
61440 KB |
Output is correct |
| 33 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 34 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 35 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 36 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 37 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 38 |
Correct |
426 ms |
61440 KB |
Output is correct |
| 39 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 40 |
Correct |
19 ms |
61440 KB |
Output is correct |
| 41 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 42 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 43 |
Correct |
319 ms |
61440 KB |
Output is correct |
| 44 |
Correct |
0 ms |
61440 KB |
Output is correct |
| 45 |
Correct |
313 ms |
61440 KB |
Output is correct |
| 46 |
Correct |
293 ms |
61440 KB |
Output is correct |
| 47 |
Correct |
309 ms |
61440 KB |
Output is correct |
| 48 |
Correct |
306 ms |
61440 KB |
Output is correct |
| 49 |
Correct |
496 ms |
61440 KB |
Output is correct |
| 50 |
Correct |
313 ms |
61440 KB |
Output is correct |
| 51 |
Correct |
339 ms |
61440 KB |
Output is correct |
| 52 |
Correct |
319 ms |
61440 KB |
Output is correct |
| 53 |
Correct |
299 ms |
61440 KB |
Output is correct |
| 54 |
Correct |
179 ms |
61440 KB |
Output is correct |
| 55 |
Correct |
196 ms |
61440 KB |
Output is correct |
| 56 |
Correct |
439 ms |
61440 KB |
Output is correct |
| 57 |
Correct |
179 ms |
61440 KB |
Output is correct |
| 58 |
Correct |
169 ms |
61440 KB |
Output is correct |
| 59 |
Correct |
156 ms |
61440 KB |
Output is correct |
| 60 |
Correct |
253 ms |
61440 KB |
Output is correct |
| 61 |
Correct |
426 ms |
61440 KB |
Output is correct |
| 62 |
Correct |
413 ms |
61440 KB |
Output is correct |
| 63 |
Correct |
443 ms |
61440 KB |
Output is correct |
| 64 |
Correct |
186 ms |
61440 KB |
Output is correct |
| 65 |
Correct |
283 ms |
61440 KB |
Output is correct |
| 66 |
Correct |
239 ms |
61440 KB |
Output is correct |
| 67 |
Correct |
276 ms |
61440 KB |
Output is correct |
| 68 |
Correct |
296 ms |
61440 KB |
Output is correct |
| 69 |
Correct |
156 ms |
61440 KB |
Output is correct |
| 70 |
Correct |
76 ms |
61440 KB |
Output is correct |
| 71 |
Correct |
119 ms |
61440 KB |
Output is correct |
| 72 |
Correct |
149 ms |
61440 KB |
Output is correct |
| 73 |
Correct |
133 ms |
61440 KB |
Output is correct |
| 74 |
Correct |
176 ms |
61440 KB |
Output is correct |
| 75 |
Correct |
146 ms |
61440 KB |
Output is correct |
| 76 |
Correct |
143 ms |
61440 KB |
Output is correct |
| 77 |
Correct |
163 ms |
61440 KB |
Output is correct |
| 78 |
Correct |
176 ms |
61440 KB |
Output is correct |
| 79 |
Correct |
66 ms |
61440 KB |
Output is correct |
| 80 |
Correct |
89 ms |
61440 KB |
Output is correct |
| 81 |
Correct |
83 ms |
61440 KB |
Output is correct |
| 82 |
Correct |
206 ms |
61440 KB |
Output is correct |
| 83 |
Correct |
226 ms |
61440 KB |
Output is correct |
| 84 |
Correct |
79 ms |
61440 KB |
Output is correct |
| 85 |
Correct |
189 ms |
61440 KB |
Output is correct |
| 86 |
Correct |
426 ms |
61440 KB |
Output is correct |
| 87 |
Correct |
206 ms |
61440 KB |
Output is correct |
| 88 |
Correct |
199 ms |
61440 KB |
Output is correct |
| 89 |
Correct |
246 ms |
61440 KB |
Output is correct |
| 90 |
Correct |
99 ms |
61440 KB |
Output is correct |
| 91 |
Correct |
216 ms |
61440 KB |
Output is correct |
| 92 |
Correct |
269 ms |
61440 KB |
Output is correct |
| 93 |
Correct |
479 ms |
61440 KB |
Output is correct |
| 94 |
Correct |
309 ms |
61440 KB |
Output is correct |
| 95 |
Correct |
166 ms |
61440 KB |
Output is correct |
| 96 |
Correct |
196 ms |
61440 KB |
Output is correct |
| 97 |
Correct |
409 ms |
61440 KB |
Output is correct |
| 98 |
Correct |
213 ms |
61440 KB |
Output is correct |
| 99 |
Correct |
203 ms |
61440 KB |
Output is correct |
| 100 |
Correct |
376 ms |
61440 KB |
Output is correct |
