restructure zeta/** to storage/zeta/**

storage/zeta/cpp/completed/27323.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    int A, B;
+    cin >> A >> B;
+    cout << A * B;
+    return 0;
+}