#include<bits/stdc++.h>
using namespace std;
#define in array<int, 2>
#define pf push_front
#define pb push_back
#define pob pop_back
#define pof pop_front
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
const int LMX = 2e7;
const int INF = LMX+1e5;
char g[LMX]; int n, m;
vector<int> d(LMX, INF);
signed main()
{
fast();
cin >> n >> m;
vector<int> dt = {+m, -m, +1, -1};
for(int i = 0; i < m*n; i++)
cin >> g[i];
deque<int> pq;
pq.pf(0); d[0] = 0;
while(pq.size())
{
int u = pq.front(); pq.pof();
for(auto x: dt)
{
int v = u+x;
if(v < 0 || (v >= (n*m)) || (g[v] == '.'))
continue;
int cn = (g[u] != g[v]);
if(d[v] > (d[u]+cn))
{
d[v] = d[u]+cn;
if(cn)
pq.pb(v);
else
pq.pf(v);
}
}
}
int ans = 0;
for(int i = 0; i < n*m; i++)
{
if(g[i] != '.')
ans = max(ans, ++d[i]);
}
cout << ans << "\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
47 ms |
80852 KB |
Output isn't correct |
| 2 |
Correct |
18 ms |
78680 KB |
Output is correct |
| 3 |
Correct |
16 ms |
78680 KB |
Output is correct |
| 4 |
Correct |
21 ms |
78940 KB |
Output is correct |
| 5 |
Correct |
18 ms |
78684 KB |
Output is correct |
| 6 |
Correct |
17 ms |
78680 KB |
Output is correct |
| 7 |
Correct |
15 ms |
78680 KB |
Output is correct |
| 8 |
Incorrect |
16 ms |
78684 KB |
Output isn't correct |
| 9 |
Correct |
18 ms |
78684 KB |
Output is correct |
| 10 |
Correct |
17 ms |
78644 KB |
Output is correct |
| 11 |
Correct |
16 ms |
78936 KB |
Output is correct |
| 12 |
Incorrect |
22 ms |
78684 KB |
Output isn't correct |
| 13 |
Correct |
18 ms |
78684 KB |
Output is correct |
| 14 |
Correct |
17 ms |
78600 KB |
Output is correct |
| 15 |
Correct |
23 ms |
81008 KB |
Output is correct |
| 16 |
Incorrect |
24 ms |
80988 KB |
Output isn't correct |
| 17 |
Correct |
23 ms |
80988 KB |
Output is correct |
| 18 |
Correct |
20 ms |
78876 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
21 ms |
78684 KB |
Output isn't correct |
| 2 |
Correct |
53 ms |
80980 KB |
Output is correct |
| 3 |
Correct |
249 ms |
95316 KB |
Output is correct |
| 4 |
Correct |
80 ms |
82780 KB |
Output is correct |
| 5 |
Incorrect |
204 ms |
89168 KB |
Output isn't correct |
| 6 |
Correct |
480 ms |
102356 KB |
Output is correct |
| 7 |
Incorrect |
16 ms |
78684 KB |
Output isn't correct |
| 8 |
Incorrect |
16 ms |
78684 KB |
Output isn't correct |
| 9 |
Correct |
17 ms |
78684 KB |
Output is correct |
| 10 |
Correct |
21 ms |
78784 KB |
Output is correct |
| 11 |
Correct |
16 ms |
78696 KB |
Output is correct |
| 12 |
Correct |
16 ms |
78684 KB |
Output is correct |
| 13 |
Correct |
47 ms |
80732 KB |
Output is correct |
| 14 |
Correct |
35 ms |
80972 KB |
Output is correct |
| 15 |
Correct |
32 ms |
80920 KB |
Output is correct |
| 16 |
Correct |
31 ms |
80988 KB |
Output is correct |
| 17 |
Correct |
99 ms |
82772 KB |
Output is correct |
| 18 |
Correct |
93 ms |
82772 KB |
Output is correct |
| 19 |
Correct |
88 ms |
82772 KB |
Output is correct |
| 20 |
Correct |
68 ms |
82780 KB |
Output is correct |
| 21 |
Correct |
158 ms |
89160 KB |
Output is correct |
| 22 |
Incorrect |
224 ms |
89168 KB |
Output isn't correct |
| 23 |
Correct |
177 ms |
87124 KB |
Output is correct |
| 24 |
Incorrect |
154 ms |
89164 KB |
Output isn't correct |
| 25 |
Correct |
353 ms |
95132 KB |
Output is correct |
| 26 |
Correct |
278 ms |
116236 KB |
Output is correct |
| 27 |
Correct |
392 ms |
105960 KB |
Output is correct |
| 28 |
Correct |
473 ms |
102604 KB |
Output is correct |
| 29 |
Incorrect |
498 ms |
102012 KB |
Output isn't correct |
| 30 |
Correct |
454 ms |
104900 KB |
Output is correct |
| 31 |
Incorrect |
364 ms |
89168 KB |
Output isn't correct |
| 32 |
Correct |
360 ms |
110324 KB |
Output is correct |
