[Init] Solved solutions

cpp/443A.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+#include <string>
+
+using namespace std;
+
+int main()
+{
+    string s;
+    int c = 0;
+    getline(cin, s);
+    for (int i = s.length() - 2; i > 0; i -= 3)
+    {
+        if (s.find(s[i]) == i)
+        {
+            c++;
+        }
+    }
+    cout << c;
+    return 0;
+}