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

storage/zeta/c/completed/24266.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main() {
+    long long n;
+    scanf("%lld", &n);
+    printf("%lld\n%d\n", n * n * n, 3);
+    return 0;
+}