diff --git a/AcWing/769/769.cpp b/AcWing/769/769.cpp
new file mode 100644
index 00000000..b2da7a0e
--- /dev/null
+++ b/AcWing/769/769.cpp
@@ -0,0 +1,21 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    string s;
+    cin >> s;
+
+    char op;
+    cin >> op;
+
+    for (char c : s) {
+        if (c != op) {
+            cout << c;
+        } else {
+            cout << '#';
+        }
+    }
+
+    return 0;
+}