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| author | crupest <crupest@outlook.com> | 2021-03-12 15:39:09 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2021-03-12 15:39:09 +0800 |
| commit | c3ea801238646fe7a54b29a244d59cbfaabd0903 (patch) | |
| tree | fa8d4c60f8ebaabe04c57b0f4b6baf0fcfcfbe3d | |
| parent | fbf896d210c528c7a8bd499a79c189c049f8424d (diff) | |
| download | crupest-c3ea801238646fe7a54b29a244d59cbfaabd0903.tar.gz crupest-c3ea801238646fe7a54b29a244d59cbfaabd0903.tar.bz2 crupest-c3ea801238646fe7a54b29a244d59cbfaabd0903.zip | |
import(solutions): Add acwing problem 1233.
| -rw-r--r-- | works/solutions/acwing/1233.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/works/solutions/acwing/1233.cpp b/works/solutions/acwing/1233.cpp new file mode 100644 index 0000000..117b2fb --- /dev/null +++ b/works/solutions/acwing/1233.cpp @@ -0,0 +1,69 @@ +#include <iostream>
+#include <utility>
+
+const int M = 1010;
+
+int N;
+char map[M][M];
+bool visited[M][M];
+
+int not_sink_count;
+
+const std::pair<int, int> moves[]{{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
+
+void dfs(int r, int c) {
+ if (visited[r][c])
+ return;
+ if (map[r][c] != '#')
+ return;
+
+ visited[r][c] = true;
+
+ bool sink = false;
+
+ for (const auto &move : moves) {
+ if (map[r + move.first][c + move.second] == '.') {
+ sink = true;
+ break;
+ }
+ }
+
+ if (!sink) {
+ not_sink_count++;
+ }
+
+ for (const auto &move : moves) {
+ dfs(r + move.first, c + move.second);
+ }
+}
+
+int main() {
+ std::ios_base::sync_with_stdio(false);
+ std::cin.tie(nullptr);
+
+ std::cin >> N;
+
+ for (int i = 1; i <= N; i++) {
+ for (int j = 1; j <= N; j++) {
+ std::cin >> map[i][j];
+ }
+ }
+
+ int result = 0;
+
+ for (int i = 1; i <= N; i++) {
+ for (int j = 1; j <= N; j++) {
+ if (map[i][j] == '#' && !visited[i][j]) {
+ dfs(i, j);
+ if (not_sink_count == 0) {
+ result++;
+ }
+ not_sink_count = 0;
+ }
+ }
+ }
+
+ std::cout << result;
+
+ return 0;
+}
|