using System;

public class MAxOccurChar {

    public static void Main(){

        string str = "Maniiisha";

        MaxoccuredString(str);

    }

    public static void MaxoccuredString(string str) 

    {           

        int maxChar=1;

        char ch= ' ';

        char[] c =  str.ToCharArray();

        for(int i=0 ;i< c.Length;i++)

        {   int count=1;

            for(int j=i+1;j<c.Length;j++)

            {

                if(c[i]== c[j])

                {

                    count++;            

                }

            }

            if(count>maxChar)

            {

                maxChar=count;

                ch= c[i];

            }

        }

        Console.WriteLine(ch);

    }

}