| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1017456 |
2024-07-09T08:09:09 Z |
Gray |
Bomb (IZhO17_bomb) |
C++17 |
|
251 ms |
80464 KB |
#include <cassert>
#include <iostream>
#include <vector>
#define ll int
#define ln "\n"
#define ff first
#define ss second
#define ld long double
const ll INF = 1e9;
const ll MOD = 1e9+7;
using namespace std;
void solve(){
ll n, m; cin >> n >> m;
vector<vector<ll>> a(n+1, vector<ll>(m+1)), left(n+1, vector<ll>(m+2)), right(n+1, vector<ll>(m+2));
for (ll i=1; i<=n; i++)
for (ll j=1; j<=m; j++){
char x; cin >> x;
a[i][j]=x-'0';
}
vector<ll> mxwid(n+1, INF);
for (ll i=1; i<=n; i++) {
for (ll j=1; j<=m; j++){
left[i][j] = a[i][j]?left[i][j-1]+1:0;
}
for (ll j=m; j>=1; j--){
right[i][j] = a[i][j]?right[i][j+1]+1:0;
if (a[i][j])mxwid[1]=min(mxwid[1], right[i][j]+left[i][j]-1);
}
}
ll mxh=INF;
for (ll j=1; j<=m; j++){
ll l=m, r=m, cc=0;
for (ll i=1; i<=n; i++){
if (a[i][j]){
l=min(l, left[i][j]);
r=min(r, right[i][j]);
cc++;
mxwid[cc]=min(mxwid[cc], l+r-1);
}else{
if (cc)mxh=min(mxh, cc);
cc=0;
l=m; r=m;
}
}
if (cc) mxh=min(mxh, cc);
}
for (ll j=m; j>=1; j--){
ll l=m, r=m, cc=0;
for (ll i=1; i<=n; i++){
if (a[i][j]){
l=min(l, left[i][j]);
r=min(r, right[i][j]);
cc++;
mxwid[cc]=min(mxwid[cc], l+r-1);
}else{
if (cc) mxh=min(mxh, cc);
cc=0;
l=m; r=m;
}
}
if (cc) mxh=min(mxh, cc);
}
ll ans=0;
for (ll i=1; i<=mxh; i++){
// cout << i << ":" << mxwid[i] << ln;
if (i>1) mxwid[i]=min(mxwid[i-1], mxwid[i]);
ans=max(ans, mxwid[i]*i);
}
cout << ans << ln;
}
void setIO(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
}
int main(){
setIO();
ll t=1;
// cin >> t;
while (t--) solve();
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
1 ms |
860 KB |
Output is correct |
| 4 |
Correct |
1 ms |
860 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 20 |
Correct |
1 ms |
344 KB |
Output is correct |
| 21 |
Correct |
0 ms |
344 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
2 ms |
1380 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 29 |
Correct |
3 ms |
1884 KB |
Output is correct |
| 30 |
Incorrect |
4 ms |
2652 KB |
Output isn't correct |
| 31 |
Incorrect |
3 ms |
2396 KB |
Output isn't correct |
| 32 |
Incorrect |
5 ms |
2392 KB |
Output isn't correct |
| 33 |
Correct |
5 ms |
3100 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1372 KB |
Output is correct |
| 35 |
Incorrect |
4 ms |
3028 KB |
Output isn't correct |
| 36 |
Correct |
5 ms |
2908 KB |
Output is correct |
| 37 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 38 |
Correct |
214 ms |
80040 KB |
Output is correct |
| 39 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 40 |
Correct |
23 ms |
10332 KB |
Output is correct |
| 41 |
Correct |
0 ms |
344 KB |
Output is correct |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
239 ms |
80148 KB |
Output is correct |
| 44 |
Correct |
4 ms |
2908 KB |
Output is correct |
| 45 |
Incorrect |
197 ms |
80172 KB |
Output isn't correct |
| 46 |
Correct |
188 ms |
80152 KB |
Output is correct |
| 47 |
Incorrect |
183 ms |
80148 KB |
Output isn't correct |
| 48 |
Correct |
175 ms |
80028 KB |
Output is correct |
| 49 |
Correct |
219 ms |
80212 KB |
Output is correct |
| 50 |
Correct |
177 ms |
80208 KB |
Output is correct |
| 51 |
Correct |
182 ms |
80084 KB |
Output is correct |
| 52 |
Correct |
199 ms |
80212 KB |
Output is correct |
| 53 |
Correct |
182 ms |
80212 KB |
Output is correct |
| 54 |
Correct |
162 ms |
80208 KB |
Output is correct |
| 55 |
Correct |
159 ms |
80024 KB |
Output is correct |
| 56 |
Correct |
219 ms |
80264 KB |
Output is correct |
| 57 |
Correct |
156 ms |
80208 KB |
Output is correct |
| 58 |
Correct |
160 ms |
80208 KB |
Output is correct |
| 59 |
Correct |
159 ms |
80208 KB |
Output is correct |
| 60 |
Correct |
181 ms |
80236 KB |
Output is correct |
| 61 |
Correct |
224 ms |
80212 KB |
Output is correct |
| 62 |
Correct |
251 ms |
80152 KB |
Output is correct |
| 63 |
Correct |
229 ms |
80212 KB |
Output is correct |
| 64 |
Correct |
169 ms |
80148 KB |
Output is correct |
| 65 |
Correct |
193 ms |
80212 KB |
Output is correct |
| 66 |
Correct |
193 ms |
80152 KB |
Output is correct |
| 67 |
Correct |
183 ms |
80156 KB |
Output is correct |
| 68 |
Correct |
188 ms |
80208 KB |
Output is correct |
| 69 |
Correct |
154 ms |
80208 KB |
Output is correct |
| 70 |
Incorrect |
95 ms |
51536 KB |
Output isn't correct |
| 71 |
Incorrect |
153 ms |
80208 KB |
Output isn't correct |
| 72 |
Correct |
159 ms |
80020 KB |
Output is correct |
| 73 |
Incorrect |
160 ms |
80208 KB |
Output isn't correct |
| 74 |
Incorrect |
176 ms |
80208 KB |
Output isn't correct |
| 75 |
Incorrect |
157 ms |
80264 KB |
Output isn't correct |
| 76 |
Correct |
155 ms |
80212 KB |
Output is correct |
| 77 |
Correct |
160 ms |
80208 KB |
Output is correct |
| 78 |
Correct |
155 ms |
80212 KB |
Output is correct |
| 79 |
Incorrect |
136 ms |
80212 KB |
Output isn't correct |
| 80 |
Incorrect |
145 ms |
80020 KB |
Output isn't correct |
| 81 |
Incorrect |
172 ms |
80148 KB |
Output isn't correct |
| 82 |
Correct |
159 ms |
80212 KB |
Output is correct |
| 83 |
Incorrect |
168 ms |
80028 KB |
Output isn't correct |
| 84 |
Incorrect |
133 ms |
80208 KB |
Output isn't correct |
| 85 |
Incorrect |
160 ms |
80024 KB |
Output isn't correct |
| 86 |
Incorrect |
217 ms |
80464 KB |
Output isn't correct |
| 87 |
Correct |
160 ms |
80028 KB |
Output is correct |
| 88 |
Incorrect |
158 ms |
80108 KB |
Output isn't correct |
| 89 |
Incorrect |
179 ms |
80036 KB |
Output isn't correct |
| 90 |
Incorrect |
126 ms |
51564 KB |
Output isn't correct |
| 91 |
Correct |
162 ms |
80208 KB |
Output is correct |
| 92 |
Correct |
176 ms |
80204 KB |
Output is correct |
| 93 |
Correct |
210 ms |
80208 KB |
Output is correct |
| 94 |
Incorrect |
179 ms |
80212 KB |
Output isn't correct |
| 95 |
Incorrect |
170 ms |
80212 KB |
Output isn't correct |
| 96 |
Incorrect |
168 ms |
80264 KB |
Output isn't correct |
| 97 |
Correct |
210 ms |
80212 KB |
Output is correct |
| 98 |
Correct |
155 ms |
80036 KB |
Output is correct |
| 99 |
Incorrect |
177 ms |
80216 KB |
Output isn't correct |
| 100 |
Incorrect |
206 ms |
80152 KB |
Output isn't correct |
