Käännöt

import java.math.BigInteger;
import java.util.Scanner;


public class Kaannot {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		
		BigInteger summa = new BigInteger("0");
		
		String alkup = s.nextLine();
		
		int n = alkup.length();
				
		
		for (int i=0; i<n; i++){
			
			for (int j=i; j<n; j++){
				
				//System.out.print(i+" "+j+" ");
				
				String käännettävä = alkup.substring(i, j+1);
				
				String käännetty = new StringBuilder(käännettävä).reverse().toString();
				
				String valmis = alkup.substring(0,i) + käännetty + alkup.substring(j+1);

				//System.out.println(valmis);
				summa = summa.add(new BigInteger(valmis));
				
			}
			
		}

		System.out.println(summa.mod(new BigInteger("1000000007")));
	}
}

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