Bai1

using System;
using System.Collections.Generic;

namespace Bai1
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<char, int> res = new Dictionary<char, int>();
            string s = Console.ReadLine();

            foreach (char value in s)
            {
                if (value != ' ')
                {
                    if (res.ContainsKey(value)) res[value]++;
                    else res.Add(value, 1);
                }
            }

            int maxValue = 0;
            int dem = 1;
            char valueCurrent = ' ';

            foreach (KeyValuePair<char, int> item in res)
            {
                if (maxValue < item.Value)
                {
                    dem = 1;
                    maxValue = item.Value;
                    valueCurrent = item.Key;
                }
                else if (maxValue == item.Value) dem++;
            }

            if (dem > 1)
            {
                foreach (KeyValuePair<char, int> item in res)
                {
                    if (item.Value == maxValue && item.Key - '0' < valueCurrent - '0') valueCurrent = item.Key;
                }
            }

            Console.WriteLine($"{res.Count}\n{valueCurrent}");
        }
    }
}