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package com.javarush.task.task18.task1803;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Самые частые байты
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
FileInputStream stream = new FileInputStream(reader.readLine());
ArrayList<Integer> list = new ArrayList<>();
while (stream.available()>0){
list.add(stream.read());
}
stream.close();
int a[]=new int[list.size()];
for(int i=0;i<a.length;i++){
a[i]=1;
}
for(int i=0;i<list.size();i++){
for (int j = 1; j < list.size(); j++) {
if(list.get(i) == list.get(j)&&list.get(i)!=0){
a[i]++;
list.set(j,0);
}
}
}
int c[]=new int[a.length];
int max=a[0];
for (int i = 1; i < a.length; i++) {
if(max<a[i]) {
max = a[i];
}
}
for (int i = 0; i < a.length; i++) {
if(max==a[i]){
c[i]=max;
}
}
for (int i = 0; i < c.length; i++) {
if(c[i]!=0){
System.out.print(c[i]+" ");
}
}
}
}