diff --git a/TangDou/LanQiaoBei/LanQiao14STEMA202301/BC2.cpp b/TangDou/LanQiaoBei/LanQiao14STEMA202301/BC2.cpp
new file mode 100644
index 0000000..0320465
--- /dev/null
+++ b/TangDou/LanQiaoBei/LanQiao14STEMA202301/BC2.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+using namespace std;
+int a[101];
+int main() {
+    int n;
+    cin >> n;
+    for (int i = 0; i < n; i++) cin >> a[i];
+
+    int s = a[0] + a[1] + a[2];
+    for (int i = 1; i < n - 2; i++) s = max(s, a[i] + a[i + 1] + a[i + 2]);
+    cout << s << endl;
+    return 0;
+}
\ No newline at end of file