Update: Rename folder name to XSMOJ

XSMOJ/小兔子乖乖,把门儿开开.cpp

@@ -0,0 +1,25 @@
+#include <algorithm>
+#include <iostream>
+#include <iomanip>
+#include <cstring>
+#include <cstdio>
+#include <stack>
+#include <ctime>
+#include <cmath>
+#include <queue>
+typedef long long l;
+typedef double d;
+typedef char c;
+using namespace std;
+int wjh(int a){
+	if(a<=2){
+		return 1;
+	}
+	return wjh(a-1)+wjh(a-2);
+}
+int main(){
+	int a;
+	cin >>a;
+	cout <<wjh(a)*2;
+	return 0;
+}