| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 170221 |
2019-12-24T09:25:46 Z |
theboatman |
Bomb (IZhO17_bomb) |
C++17 |
|
48 ms |
7208 KB |
#include <bits/stdc++.h>
#define y1 theboatman
#define make_struct(args...) {args}
using namespace std;
typedef long long ll;
const long long INF = ll(1e18) + 10;
const int inf = int(1e9) + 10;
const int N = int(1e6) + 10;
bool can(int first, int c, int n, int m, vector <string> &a) {
for(int i = 0; i < n; i++) {
for(int j = 0; j < m; j++) {
if (a[i][j] == '1') {
int sz = 0;
while(j < m && a[i][j] == '1') {
j++;
sz++;
}
j--;
if (sz < c) {
return false;
}
}
}
}
for(int j = 0; j < m; j++) {
for(int i = 0; i < n; i++) {
if (a[i][j] == '1') {
int sz = 0;
while(i < n && a[i][j] == '1') {
i++;
sz++;
}
i--;
if (sz < first) {
return false;
}
}
}
}
return true;
}
void brute(int n, int m) {
vector <string> a(n);
for(int i = 0; i < n; i++) {
cin >> a[i];
}
ll ans = 0;
for(int i = 1; i <= n; i++) {
int first = i;
if (!can(i, 1, n, m, a)) {
continue;
}
int l = 1, r = m + 1;
while(l < r) {
int c = l + r >> 1;
if (can(first, c, n, m, a)) {
l = c + 1;
}
else {
r = c;
}
}
l--;
ans = max(ans, 1LL * first * l);
}
for(int i = 1; i <= m; i++) {
int first = i;
if (!can(1, i, n, m, a)) {
continue;
}
int l = 1, r = n + 1;
while(l < r) {
int c = l + r >> 1;
if (can(c, first, n, m, a)) {
l = c + 1;
}
else {
r = c;
}
}
l--;
ans = max(ans, 1LL * first * l);
}
cout << ans << "\n";
}
int main() {
cin.tie(0);
ios::sync_with_stdio(0);
int n, m;
cin >> n >> m;
if (1LL * n * m * n * 5 <= int(5e7)) {
brute(n, m);
return 0;
}
vector <string> a(n);
for(int i = 0; i < n; i++) {
cin >> a[i];
}
int second = m;
for(int i = 0; i < n; i++) {
for(int j = 0; j < m; j++) {
if (a[i][j] == '1') {
int sz = 0;
while(j < m && a[i][j] == '1') {
j++;
sz++;
}
j--;
second = min(second, sz);
}
}
}
int first = n;
for(int j = 0; j < m; j++) {
for(int i = 0; i < n; i++) {
if (a[i][j] == '1') {
int sz = 0;
while(i < n && a[i][j] == '1') {
i++;
sz++;
}
i--;
first = min(first, sz);
}
}
}
cout << 1LL * first * second << "\n";
return 0;
}
/*
*/
Compilation message
bomb.cpp: In function 'void brute(int, int)':
bomb.cpp:67:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int c = l + r >> 1;
~~^~~
bomb.cpp:89:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int c = l + r >> 1;
~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
256 KB |
Output is correct |
| 3 |
Correct |
22 ms |
376 KB |
Output is correct |
| 4 |
Correct |
21 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Correct |
2 ms |
256 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 9 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
256 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 12 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
2 ms |
376 KB |
Output is correct |
| 15 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
3 ms |
376 KB |
Output is correct |
| 18 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 19 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
| 20 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
| 21 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 22 |
Incorrect |
3 ms |
380 KB |
Output isn't correct |
| 23 |
Incorrect |
9 ms |
376 KB |
Output isn't correct |
| 24 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
| 25 |
Incorrect |
9 ms |
376 KB |
Output isn't correct |
| 26 |
Correct |
6 ms |
432 KB |
Output is correct |
| 27 |
Correct |
2 ms |
504 KB |
Output is correct |
| 28 |
Incorrect |
2 ms |
504 KB |
Output isn't correct |
| 29 |
Incorrect |
3 ms |
508 KB |
Output isn't correct |
| 30 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 31 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 32 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 33 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 34 |
Incorrect |
2 ms |
504 KB |
Output isn't correct |
| 35 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 36 |
Correct |
3 ms |
632 KB |
Output is correct |
| 37 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 38 |
Correct |
43 ms |
7032 KB |
Output is correct |
| 39 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 40 |
Incorrect |
6 ms |
1144 KB |
Output isn't correct |
| 41 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 42 |
Incorrect |
19 ms |
376 KB |
Output isn't correct |
| 43 |
Correct |
46 ms |
7032 KB |
Output is correct |
| 44 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 45 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 46 |
Correct |
45 ms |
7032 KB |
Output is correct |
| 47 |
Incorrect |
42 ms |
7160 KB |
Output isn't correct |
| 48 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 49 |
Correct |
43 ms |
7032 KB |
Output is correct |
| 50 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 51 |
Incorrect |
45 ms |
7160 KB |
Output isn't correct |
| 52 |
Incorrect |
46 ms |
7208 KB |
Output isn't correct |
| 53 |
Incorrect |
41 ms |
7032 KB |
Output isn't correct |
| 54 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 55 |
Incorrect |
43 ms |
7160 KB |
Output isn't correct |
| 56 |
Correct |
44 ms |
7032 KB |
Output is correct |
| 57 |
Incorrect |
47 ms |
7032 KB |
Output isn't correct |
| 58 |
Incorrect |
48 ms |
7032 KB |
Output isn't correct |
| 59 |
Incorrect |
44 ms |
7088 KB |
Output isn't correct |
| 60 |
Correct |
46 ms |
7032 KB |
Output is correct |
| 61 |
Correct |
42 ms |
7160 KB |
Output is correct |
| 62 |
Correct |
42 ms |
7032 KB |
Output is correct |
| 63 |
Correct |
42 ms |
7032 KB |
Output is correct |
| 64 |
Correct |
46 ms |
7088 KB |
Output is correct |
| 65 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 66 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 67 |
Incorrect |
43 ms |
7160 KB |
Output isn't correct |
| 68 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 69 |
Incorrect |
48 ms |
7004 KB |
Output isn't correct |
| 70 |
Incorrect |
24 ms |
4728 KB |
Output isn't correct |
| 71 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 72 |
Incorrect |
47 ms |
7032 KB |
Output isn't correct |
| 73 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 74 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 75 |
Incorrect |
47 ms |
7032 KB |
Output isn't correct |
| 76 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 77 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 78 |
Incorrect |
45 ms |
7032 KB |
Output isn't correct |
| 79 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 80 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 81 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 82 |
Incorrect |
43 ms |
7036 KB |
Output isn't correct |
| 83 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 84 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 85 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 86 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 87 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 88 |
Incorrect |
45 ms |
7032 KB |
Output isn't correct |
| 89 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
| 90 |
Incorrect |
24 ms |
4600 KB |
Output isn't correct |
| 91 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 92 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 93 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 94 |
Incorrect |
43 ms |
7032 KB |
Output isn't correct |
| 95 |
Incorrect |
48 ms |
7032 KB |
Output isn't correct |
| 96 |
Incorrect |
46 ms |
7032 KB |
Output isn't correct |
| 97 |
Incorrect |
35 ms |
7032 KB |
Output isn't correct |
| 98 |
Incorrect |
46 ms |
7160 KB |
Output isn't correct |
| 99 |
Incorrect |
44 ms |
7032 KB |
Output isn't correct |
| 100 |
Incorrect |
42 ms |
7032 KB |
Output isn't correct |
