Created
May 26, 2020 00:44
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Lake Counting
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#include <bits/stdc++.h> | |
using namespace std; | |
#define rep(i, n) for (int i = 0; i < (n); ++i) | |
const int INF = 1001001001; | |
void dfs(vector<vector<string>> &vect, int x, int y, int N, int M) { | |
vect[x][y] = "."; | |
for (int dx = -1; dx <= 1; dx++) { | |
for (int dy = -1; dy <= 1; dy++) { | |
int nx = x + dx; | |
int ny = y + dy; | |
if (0 <= nx && nx < N && 0 <= ny && ny < M) { | |
if (vect[nx][ny] == "W") { | |
dfs(vect, nx, ny, N, M); | |
} | |
} | |
} | |
} | |
} | |
int main() { | |
int N; | |
int M; | |
cin >> N >> M; | |
vector<vector<string>> data(N, vector<string>(M)); | |
// rep(i, vect.size()) cout << vect[i] << endl; | |
rep(i, N) { | |
string inputS; | |
cin >> inputS; | |
rep(j, M) { data.at(i).at(j) = inputS.at(j); } | |
} | |
int res = 0; | |
rep(i, N) { | |
rep(j, M) { | |
if (data.at(i).at(j) == "W") { | |
dfs(data, i, j, N, M); | |
res++; | |
} | |
} | |
} | |
rep(i, N) { | |
rep(j, M) { cout << data[i][j]; } | |
} | |
cout << res << endl; | |
return 0; | |
} |
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