#include <iostream>
#include <string>
#include <cstdio>
using namespace std;
int main(){
  string str,cnt;
  string code[]={"101","000000","000011","10010001","010001","000001","100101","10011010","0101","0001","110","01001","10011011","010000","0111","10011000","0110","00100","10011001","10011110","00101","111","10011111","1000","00110","00111","10011100","10011101","000010","10010010","10010011","10010000"};
  string alph=" ',-.?ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  string code2[]={"00000","00001","00010","00011","00100","00101","00110","00111","01000","01001","01010","01011","01100","01101","01110","01111","10000","10001","10010","10011","10100","10101","10110","10111","11000","11001","11010","11011","11100","11101","11110","11111"};
  string alph2="ABCDEFGHIJKLMNOPQRSTUVWXYZ .,-'?";
  string ans,hm;
  getline(cin,str);
  for(int i=0,l=str.size();i<l;i++){
    for(int j=0;;j++){
      if(str[i]==alph[j]){
	cnt += code[j];
	break;
      }
    }
  }
  if(cnt.size()%5!=0) for(int i=0,l=5-cnt.size()%5;i<l;i++)cnt += "0";
  for(int i=0,l=cnt.size();i<l/5;i++){
    hm=cnt.substr(i*5,5);
    for(int j=0;;j++){
      if(hm==code2[j]){
	ans += alph2[j];
	break;
      }
    }
  }
  cout << ans << endl;
}