#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pld pair<ld, ld>
#define pb push_back
#define fi first
#define se second
#define debug(x) cout << #x << " => " << x << endl
#define all(x) x.begin(),x.end()
bool vis[4010][4010];
int main()
{
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
int n,m;cin>>n>>m;
string s[n];
for(int i=0;i<n;i++) cin>>s[i];
priority_queue<pair<int,pii>> pq;
pq.push({0,{0,0}});
int ans=0;
while(!pq.empty())
{
int x=pq.top().se.fi,y=pq.top().se.se,v=pq.top().fi;
pq.pop();
if(vis[x][y]) continue;
ans=max(ans,v);
vis[x][y]=1;
if(x+1<n && !vis[x+1][y]) pq.push({-(v+(s[x][y]!=s[x+1][y])),{x+1,y}});
if(y+1<n && !vis[x][y+1]) pq.push({-(v+(s[x][y]!=s[x][y+1])),{x,y+1}});
}
cout<<ans+1;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
32 ms |
3240 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
604 KB |
Output isn't correct |
| 4 |
Incorrect |
16 ms |
2912 KB |
Output isn't correct |
| 5 |
Incorrect |
6 ms |
1788 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
604 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
896 KB |
Output isn't correct |
| 10 |
Incorrect |
8 ms |
1500 KB |
Output isn't correct |
| 11 |
Incorrect |
3 ms |
1372 KB |
Output isn't correct |
| 12 |
Incorrect |
11 ms |
1884 KB |
Output isn't correct |
| 13 |
Incorrect |
7 ms |
1760 KB |
Output isn't correct |
| 14 |
Incorrect |
8 ms |
1920 KB |
Output isn't correct |
| 15 |
Incorrect |
20 ms |
3308 KB |
Output isn't correct |
| 16 |
Incorrect |
28 ms |
3360 KB |
Output isn't correct |
| 17 |
Incorrect |
19 ms |
3148 KB |
Output isn't correct |
| 18 |
Incorrect |
16 ms |
2908 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
931 ms |
22508 KB |
Output isn't correct |
| 2 |
Incorrect |
128 ms |
10188 KB |
Output isn't correct |
| 3 |
Incorrect |
1476 ms |
63620 KB |
Output isn't correct |
| 4 |
Incorrect |
274 ms |
16940 KB |
Output isn't correct |
| 5 |
Incorrect |
360 ms |
30932 KB |
Output isn't correct |
| 6 |
Incorrect |
1196 ms |
55908 KB |
Output isn't correct |
| 7 |
Incorrect |
1272 ms |
29424 KB |
Output isn't correct |
| 8 |
Incorrect |
919 ms |
22300 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
604 KB |
Output isn't correct |
| 10 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 11 |
Runtime error |
21 ms |
32540 KB |
Execution killed with signal 11 |
| 12 |
Incorrect |
2 ms |
856 KB |
Output isn't correct |
| 13 |
Incorrect |
120 ms |
10152 KB |
Output isn't correct |
| 14 |
Incorrect |
65 ms |
6732 KB |
Output isn't correct |
| 15 |
Incorrect |
42 ms |
6236 KB |
Output isn't correct |
| 16 |
Incorrect |
13 ms |
3608 KB |
Output isn't correct |
| 17 |
Incorrect |
324 ms |
23604 KB |
Output isn't correct |
| 18 |
Incorrect |
174 ms |
16468 KB |
Output isn't correct |
| 19 |
Incorrect |
258 ms |
17100 KB |
Output isn't correct |
| 20 |
Incorrect |
266 ms |
17448 KB |
Output isn't correct |
| 21 |
Incorrect |
608 ms |
38588 KB |
Output isn't correct |
| 22 |
Incorrect |
355 ms |
30888 KB |
Output isn't correct |
| 23 |
Incorrect |
575 ms |
33316 KB |
Output isn't correct |
| 24 |
Incorrect |
693 ms |
37892 KB |
Output isn't correct |
| 25 |
Incorrect |
1404 ms |
62116 KB |
Output isn't correct |
| 26 |
Correct |
493 ms |
39748 KB |
Output is correct |
| 27 |
Incorrect |
868 ms |
51172 KB |
Output isn't correct |
| 28 |
Incorrect |
1184 ms |
57280 KB |
Output isn't correct |
| 29 |
Incorrect |
1230 ms |
57284 KB |
Output isn't correct |
| 30 |
Incorrect |
1145 ms |
55440 KB |
Output isn't correct |
| 31 |
Incorrect |
1026 ms |
48312 KB |
Output isn't correct |
| 32 |
Incorrect |
1022 ms |
51072 KB |
Output isn't correct |
