In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.

Ex Input:
5, 20, ['1289', 'z', '8037', 'g', '197', 'D', '2689', 'Z', '2795', '6727', 'f', '5913', 'j', '8043', '3365', 'n', 'L', 'g', 'v', '453', '413', '8101', 'u', 'A', '6691', 'y', 'i', '8459', '4127', 'X']

Ex Output:
197D2689Z27956727f5913j80433365nLgv453


Ex Input:
3, 5, ['f', '3797', 'm', 'Q', 'g', '1147']

Ex Output:
mQg


Ex Input:
18, 19, ['7947', '3335', 'x', 'e', 'G', 'T', '2215', '7223', 'j', 'X', '2665', '2987', 'X', 'n', 'J', '3303', 'g', '779', '9637', 'T', 'r', 'P', 'm', 'q']

Ex Output:

7799637