diff --git a/1811A Insert Digit/1811A.cpp b/1811A Insert Digit/1811A.cpp
new file mode 100644
index 0000000..cdb5a21
--- /dev/null
+++ b/1811A Insert Digit/1811A.cpp	
@@ -0,0 +1,35 @@
+#include <bits/stdc++.h>
+using namespace std;
+using ll = long long;
+
+void solve()
+{
+    int n;
+    char c;
+    cin >> n >> c;
+    string s;
+    cin >> s;
+    for (int i = 0; i < s.size(); ++i)
+    {
+        if (c > s[i])
+        {
+            s.insert(i, 1, c);
+            cout << s << endl;
+            return;
+        }
+    }
+    s=s+c;
+    cout<<s<<endl;
+}
+
+int main()
+{
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int TC = 1;
+    cin >> TC;
+    cin.ignore();
+    while (TC--)
+        solve();
+}
\ No newline at end of file