#include<iostream>
#include<vector>
#include<deque>
#include<array>
using namespace std;
int main(){
int n, m;
cin >> n >> m;
vector<string> a(n + 2);
string c = "";
for(int i = 0; i <= m + 1; i++) c += "*";
a[0] = c;
a[n + 1] = c;
for(int i = 1; i <= n; i++){
cin >> a[i];
a[i] = "*" + a[i] + "*";
}
vector<vector<int>> b(n + 2, vector<int>(m + 2, -1));
deque<array<int, 2>> dq;
b[1][1] = 1;
int maxi = 1;
dq.push_back({1, 1});
vector<array<int, 2>> dir = {{1, 0}, {0, -1}, {-1, 0}, {0, 1}};
while(!dq.empty()){
int x = dq.front()[0];
int y = dq.front()[1];
dq.pop_front();
for(auto d : dir){
int xd = x + d[0];
int yd = y + d[1];
if(b[xd][yd] == -1){
if(a[x][y] == a[xd][yd]){
dq.push_front({xd, yd});
b[xd][yd] = b[x][y];
}
else if(a[xd][yd] != '*'){
dq.push_back({xd, yd});
b[xd][yd] = b[x][y] + 1;
maxi = b[x][y] + 1;
}
}
}
}
cout << maxi << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
2 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
2 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
20 ms |
7144 KB |
Output is correct |
17 |
Correct |
18 ms |
7004 KB |
Output is correct |
18 |
Correct |
18 ms |
7260 KB |
Output is correct |
19 |
Correct |
19 ms |
7244 KB |
Output is correct |
20 |
Correct |
17 ms |
7000 KB |
Output is correct |
21 |
Correct |
41 ms |
6748 KB |
Output is correct |
22 |
Correct |
40 ms |
6744 KB |
Output is correct |
23 |
Correct |
40 ms |
6748 KB |
Output is correct |
24 |
Correct |
40 ms |
7004 KB |
Output is correct |
25 |
Correct |
39 ms |
7084 KB |
Output is correct |
26 |
Correct |
41 ms |
7004 KB |
Output is correct |
27 |
Correct |
39 ms |
6748 KB |
Output is correct |
28 |
Correct |
40 ms |
6748 KB |
Output is correct |
29 |
Correct |
42 ms |
7004 KB |
Output is correct |
30 |
Correct |
42 ms |
6916 KB |
Output is correct |