#include <bits/stdc++.h>
using  namespace std;

int main()
{
  char S;
  cin >> S;
  switch (S) {
    case 'A':
    case 'B':
    case 'C':
    case 'D':
    case 'F':
    case 'G':
      cout << S << "#" << endl;
      break;
    case 'E':
      cout << "F" << endl;
    break;
  }
}