Image

Author: seikhchilli

1721A.cpp

@@ -0,0 +1,27 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+
+#define ll long long
+#define endl '\n'
+#define debug(n) cout<<(n)<<endl;
+const ll INF = 2e18 + 99;
+
+int main(){
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+
+  int t;
+  cin>>t;
+  while(t--){
+    unordered_set<char> uos;
+    string s1, s2;
+    cin>>s1>>s2;
+    uos.insert(s1[0]);
+    uos.insert(s1[1]);
+    uos.insert(s2[0]);
+    uos.insert(s2[1]);
+    cout<<uos.size()-1<<endl;
+  }
+
+}