Scanner scn = new Scanner(System.in);
String in = scn.nextLine();
Composition(in);
}
static void Composition(String in) {
int[] count = new int[256];
int len = in.length();
for(int i = 0; i<len ; i++) {
count[(int) in.charAt(i)]++;
}
for(int i = 0; i<256 ;i++) {
if(count[i]!=0 && count[i]>1) {
System.out.print((char)i+""+count[i]);
}else if (count[i]!=0 && count[i]==1) {
System.out.print((char)i);
}
}
}
}
