Dictionary-1

#include<bits/stdc++.h>
using namespace std;
int main()
{
  char c=' ', ch;
  map<char, int> d;
  do {
    cin >> ch;
    ch = toupper(ch);
    if ('A' <= ch && ch <= 'Z')
    {
      d[ch]++;
      if ( d[c] < d[ch] || (d[c] == d[ch] && ch < c) )
        c = ch;
    }
  } while (ch != '.');
  cout << c << " " << d[c];
}