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

storage/zeta/cpp/completed/2501.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main() {
+    int count = 1;
+    int N, K;
+
+    cin >> N >> K;
+    if(K == 1) {
+        cout << 1 << endl;
+        return 0;
+    }
+    for(int i=2;i<=N;i++) {
+        if (N%i == 0) {
+            count += 1;
+            if (count == K) {
+                cout << i << endl;
+                break;
+            }
+        }
+    }
+    if (K > count) {
+        cout << 0 << endl;
+    }
+
+    return 0;
+}