diff --git a/AcWing/3988/3988.cpp b/AcWing/3988/3988.cpp
new file mode 100644
index 00000000..2cdab528
--- /dev/null
+++ b/AcWing/3988/3988.cpp
@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, k, i, a[105];
+map<int, int> b;
+
+int main() {
+    cin >> n >> k;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+        b[a[i]] = i;
+    }
+    if (b.size() < k) {
+        cout << "NO" << endl;
+    } else {
+        cout << "YES" << endl;
+        for (auto it : b) {
+            cout << it.second << ' ';
+            if (++i >= k) break;
+        }
+        cout << endl;
+    }
+    return 0;
+}