import java.util.*;

public class es8 {
    public static void main(String[] args) {
        int s;
        Scanner keyboard = new Scanner(System.in);

        System.out.print("Inserisci l'array di interi: ");
        String[] buffer = keyboard.nextLine().split(" "); // array di stringhe
        int[] ar = new int[buffer.length]; // array di interi

        System.out.print("Inserisci la key");
        s = keyboard.nextInt();

        keyboard.close();

        for (int i = 0; i < buffer.length; i++) { // converto string[] in int[]
            ar[i] = Integer.parseInt(buffer[i]);
        }
        int[] ciao = new int[2];

        ciao = calc(ar,s);
        for(int c : ciao) {
            System.out.print(c + " ");
        }
    }


    /*

     private static String search(int[] ar, int s, int i, int j) {
        if (i == ar.length - 2 && j == ar.length - 1) {
            return (ar[i] + ar[j] == s ? i + " " + j : null);
        } else if (i != ar.length - 2 && j == ar.length - 1) {
            return search(ar, s, i + 1, i + 2);
        } else {
            if (sumOfIJ(ar, i, j) > s) {
                return search(ar, s, i + 1, i + 2);
            } else if (sumOfIJ(ar, i, j) == s) {
                return i + " " + j;
            } else
                return search(ar, s, i, j + 1);

        }

    }
     */


    /**
     * works, tested
     *
     * @param ar
     * @param i
     * @param j
     * @return sum of elements in array of int ar
     */
    private static int sumOfIJ(int[] ar, int i, int j) {
        int sum = 0;
        while (i <= j) {
            sum = sum + ar[i];
            i++;
        }
        return sum;
    }



    private static int[] calc(int[] inputa, int keys) {
        int sum = 0, j = 0;
        for(int i = 0 ; i < inputa.length-1; i++) {
            j = i;
            sum = 0;
            if(inputa[i] != 0) {
                while(j < inputa.length-i) {
                    sum += inputa[j];
                    if(sum == keys) {
                        return new int[] {i, j};
                    }
                    j++;
                }
            }
        }
        return new int[] {-1,-1};
    }
}