int countSubstrings(string s) {

         int count = ;

         if( s.size() == )

             return ;

         for( int i = ; i < s.size(); i++){

             count += checkPalindromic(s, i,i);

             count += checkPalindromic(s, i, i+);

         }

         return count ;

     }

     int checkPalindromic( string s ,int i ,int j ){

         int count = ;

         while( i >= && j < s.size() && s[i] == s[j]){

             i--;

             j++;

             count++;

         }

         return count;

     }