Added 1833A - Musical Puzzle.cpp

Author: vikashpatel24

1833A - Musical Puzzle.cpp

@@ -0,0 +1,27 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+#define ll long long
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+ 
+int main()
+{
+    int t;
+    cin>>t;
+    while(t--)
+    {
+        int n;
+        cin>>n;
+        string s;
+        cin>>s;
+        unordered_set<string> st;
+        for(int i=0; i<n-1; i++)
+        {
+            st.insert(s.substr(i,2));
+        }
+        cout<<st.size()<<endl;
+    }
+    return 0;
+}