Added 1721A - Image.cpp

Author: vikashpatel24

1721A - Image.cpp

@@ -0,0 +1,35 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+
+#define ll long long
+#define pb push_back
+#define ff first
+#define ss second
+#define mp make_pair
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+
+int main()
+{
+    ios_base::sync_with_stdio(0);
+    cin.tie(0);
+    cout.tie(0);
+    
+    // #ifndef ONLINE_JUDGE
+    // freopen("input.txt", "r", stdin);
+    // freopen("/Users/vikash/Desktop/output.txt", "w", stdout);
+    // #endif
+    
+    int t;
+    cin>>t;
+    while(t--)
+    {
+        string a, b;
+        cin>>a>>b;
+        set<char> st= {a[0], a[1], b[0], b[1]};
+        cout<<-1+st.size()<<endl;
+    }
+    return 0;
+}