（Optional）Given an array of integers, return indices of the two numbers such that they add up to a specific target. Below the sample code is to create an array with 5 elements, and initialize each of them.

#include <iostream>
#include <array>
#include <vector>
#include <ctime>
using namespace std;
int main () {
    int number[5]; 
        number[0] = 1;
        number[1] = 2;
        number[2] = 3;
        number[3] = 4;
        number[4] = 5;
}

The input consists of n (0<n<100) samples.
Each sample consists of 2 lines.
The fisrt line of each sample consists of N input (range from 1 to 100), target sum (range from 0 to 20000).
The Second line of each samples consists of N integers of an array (range 0 to 10000).
The last line of input consists of Int(-1).
The values in the array can be equal.
There is only one pair of values added equal to the target in the array.

Output the indices by order.