| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 58869 |
2018-07-19T16:57:14 Z |
Benq |
Bomb (IZhO17_bomb) |
C++14 |
|
1000 ms |
132096 KB |
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;
typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;
typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)
#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 2505;
int cum1[MX][MX], cum2[MX][MX];
char gr[MX][MX];
int n,m;
bool ok(int x, int y) {
FOR(i,1,n+1) FOR(j,1,m+1) cum2[i][j] = 0;
F0R(i,n+1-x) F0R(j,m+1-y) if (cum1[i+x][j+y]-cum1[i][j+y]-cum1[i+x][j]+cum1[i][j] == x*y) {
cum2[i+1][j+1] ++;
cum2[i+1][j+1+y] --;
cum2[i+1+x][j+1] --;
cum2[i+1+x][j+1+y] ++;
}
FOR(i,1,n+1) FOR(j,1,m+1) {
cum2[i][j] += cum2[i][j-1]+cum2[i-1][j]-cum2[i-1][j-1];
if (gr[i][j] == '1' && !cum2[i][j]) return 0;
}
return 1;
}
int main() {
// freopen("bomb.in","r",stdin);
// freopen("bomb.out","w",stdout);
cin >> n >> m;
FOR(i,1,n+1) FOR(j,1,m+1) {
cin >> gr[i][j];
cum1[i][j] = cum1[i-1][j]+cum1[i][j-1]-cum1[i-1][j-1];
if (gr[i][j] == '1') cum1[i][j] ++;
}
int x = 0, ans = 0;
FORd(i,1,n+1) {
while (ok(i,x+1)) x ++;
ans = max(ans,i*x);
}
cout << ans;
}
/* Look for:
* the exact constraints (multiple sets are too slow for n=10^6 :( )
* special cases (n=1?)
* overflow (ll vs int?)
* array bounds
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
3 ms |
620 KB |
Output is correct |
| 3 |
Correct |
223 ms |
26672 KB |
Output is correct |
| 4 |
Correct |
190 ms |
26840 KB |
Output is correct |
| 5 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 6 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 7 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 8 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 9 |
Correct |
4 ms |
26840 KB |
Output is correct |
| 10 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 11 |
Correct |
2 ms |
26840 KB |
Output is correct |
| 12 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 13 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 14 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 15 |
Correct |
3 ms |
26840 KB |
Output is correct |
| 16 |
Correct |
4 ms |
26840 KB |
Output is correct |
| 17 |
Correct |
5 ms |
26840 KB |
Output is correct |
| 18 |
Correct |
5 ms |
26840 KB |
Output is correct |
| 19 |
Correct |
6 ms |
26840 KB |
Output is correct |
| 20 |
Correct |
8 ms |
26840 KB |
Output is correct |
| 21 |
Correct |
4 ms |
26840 KB |
Output is correct |
| 22 |
Correct |
6 ms |
26840 KB |
Output is correct |
| 23 |
Correct |
12 ms |
26840 KB |
Output is correct |
| 24 |
Correct |
8 ms |
26840 KB |
Output is correct |
| 25 |
Correct |
10 ms |
26840 KB |
Output is correct |
| 26 |
Correct |
10 ms |
26840 KB |
Output is correct |
| 27 |
Correct |
84 ms |
26840 KB |
Output is correct |
| 28 |
Correct |
75 ms |
26840 KB |
Output is correct |
| 29 |
Correct |
224 ms |
26840 KB |
Output is correct |
| 30 |
Correct |
340 ms |
26840 KB |
Output is correct |
| 31 |
Correct |
266 ms |
26840 KB |
Output is correct |
| 32 |
Correct |
195 ms |
26840 KB |
Output is correct |
| 33 |
Correct |
424 ms |
26840 KB |
Output is correct |
| 34 |
Correct |
59 ms |
26840 KB |
Output is correct |
| 35 |
Correct |
321 ms |
26840 KB |
Output is correct |
| 36 |
Correct |
353 ms |
26840 KB |
Output is correct |
| 37 |
Correct |
4 ms |
26840 KB |
Output is correct |
| 38 |
Execution timed out |
1078 ms |
63632 KB |
Time limit exceeded |
| 39 |
Correct |
4 ms |
63632 KB |
Output is correct |
| 40 |
Execution timed out |
1076 ms |
63632 KB |
Time limit exceeded |
| 41 |
Correct |
3 ms |
63632 KB |
Output is correct |
| 42 |
Correct |
10 ms |
63632 KB |
Output is correct |
| 43 |
Execution timed out |
1082 ms |
70572 KB |
Time limit exceeded |
| 44 |
Correct |
500 ms |
70572 KB |
Output is correct |
| 45 |
Execution timed out |
1076 ms |
76948 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1087 ms |
82884 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1084 ms |
89152 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1091 ms |
95304 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1087 ms |
101448 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1077 ms |
107508 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1092 ms |
113624 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1081 ms |
119772 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1086 ms |
125816 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1078 ms |
131976 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1088 ms |
132096 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1083 ms |
132096 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1089 ms |
132096 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1064 ms |
132096 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1090 ms |
132096 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1087 ms |
132096 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1067 ms |
132096 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1086 ms |
132096 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1090 ms |
132096 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1075 ms |
132096 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1072 ms |
132096 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1087 ms |
132096 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1063 ms |
132096 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1080 ms |
132096 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1078 ms |
132096 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1095 ms |
132096 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1094 ms |
132096 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1089 ms |
132096 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1088 ms |
132096 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1089 ms |
132096 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1082 ms |
132096 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1092 ms |
132096 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1082 ms |
132096 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1089 ms |
132096 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1088 ms |
132096 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1095 ms |
132096 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1085 ms |
132096 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1086 ms |
132096 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1084 ms |
132096 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1086 ms |
132096 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1091 ms |
132096 KB |
Time limit exceeded |
