Osajono

import java.util.*;
 
public class ratkaisu {
 
	static Scanner scanner = new Scanner (System.in);
	
	public static void main(String[] args) {
		
		IO io = new IO();
		//System.out.println("Input string:");
	
		String a = io.next();
		//String a = scanner.nextLine();
	
		int sum = a.length();
	
		List<String> osajonot = new ArrayList<String>();
	
		for (int i = 2; i <= a.length(); i++){
			for (int j = 0; j < a.length(); j++){  //20
				if (j+i <= a.length()){
					osajonot.add(a.substring(j, j+i));
				}
			}
		}
	
		int e = osajonot.size();
		for (int k = 0; k < e; k++){
			String osajono = osajonot.get(k);
			char eka_char = osajono.charAt(0);
			char vika_char = osajono.charAt(osajono.length()-1);
			if (eka_char == vika_char){
				sum += 1;
			}	
		}
	
		io.println(sum);
		//System.out.println(sum);
	
		io.close();
		//scanner.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: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

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