'commit'

TangDou/XiTi/1386.cpp

@@ -0,0 +1,38 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 110;
+char a[N][N];
+#define x first
+#define y second
+typedef pair<int, int> PII;
+int dx[] = {-1, 0, 1, 0}; //上右下左
+int dy[] = {0, 1, 0, -1}; //上右下左
+int main() {
+    int n, m;
+    cin >> n >> m;
+    for (int i = 1; i <= n; i++)
+        for (int j = 1; j <= m; j++)
+            cin >> a[i][j];
+
+    queue<PII> q;
+    q.push({1, 1});
+    while (q.size()) {
+        auto t = q.front();
+        q.pop();
+        for (int i = 0; i < 4; i++) {
+            int tx = t.x + dx[i], ty = t.y + dy[i];
+            if (tx == 0 || tx > n || ty == 0 || ty > m) continue;
+            if (a[tx][ty] == '0') {
+                a[tx][ty] = 'x';
+                q.push({tx, ty});
+            }
+        }
+    }
+
+    if (a[n][m] == 'x')
+        cout << "yes" << endl;
+    else
+        cout << "no" << endl;
+    return 0;
+}