'commit'

2025-08-30 18:35:01 +08:00
commit 1f397eca87
6258 changed files with 1487241 additions and 0 deletions
--- a/TangDou/LanQiaoBei/LanQiao13STEMA202210/4.cpp
+++ b/TangDou/LanQiaoBei/LanQiao13STEMA202210/4.cpp
@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+struct Node {
+    int num;
+    int step;
+};
+
+const int N = 1010;
+int n, m;
+queue<Node> q;
+int st[N];
+
+void bfs() {
+    q.push({n, 0});
+    while (q.size()) {
+        auto x = q.front();
+        q.pop();
+        if (x.num == m) {
+            printf("%d\n", x.step);
+            break;
+        }
+        if (!st[x.num + 1]) {
+            q.push({x.num + 1, x.step + 1});
+            st[x.num + 1] = 1;
+        }
+        if (!st[x.num - 1]) {
+            q.push({x.num - 1, x.step + 1});
+            st[x.num - 1] = 1;
+        }
+        if (!st[x.num * 2]) {
+            q.push({x.num * 2, x.step + 1});
+            st[x.num * 2] = 1;
+        }
+    }
+}
+
+int main() {
+    cin >> n >> m;
+    bfs();
+    return 0;
+}