Osajono

public class Osajono5 {

	 public static void main(String[] args)
	 {
		 IO io = new IO();
	     int tuloste = 0;
	     String input = io.next();
	     int inputLength = input.length();
	     
	     tuloste = tuloste + inputLength;
	     
	     for (int i = 0; i < inputLength-1; i++)
	     {
	    	 String kok = "" + input.charAt(i);
			 String endOfStr = input.substring(i);
	    	 tuloste = tuloste + Math.max(endOfStr.length() - endOfStr.replaceAll(kok, "").length()-1,0); 
	     }
	     io.println(tuloste);
	     io.close();
	 }
	 
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED