diff --git a/UniversalOJ/9/9.cpp b/UniversalOJ/9/9.cpp
new file mode 100644
index 00000000..5d21e18c
--- /dev/null
+++ b/UniversalOJ/9/9.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <algorithm>
+#include <string>
+#include <vector>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int n;
+
+    cin >> n;
+
+    std::vector<std::string> v(n);
+
+    for (auto& s : v) cin >> s;
+
+    std::sort(v.begin(), v.end(), [&](const std::string& lhs, const std::string& rhs) -> bool {
+        return lhs.size() == rhs.size() ? lhs < rhs : lhs.size() < rhs.size();
+    });
+
+    for (auto& s : v) cout << s << endl;
+
+    return 0;
+}