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:
7, 20, ['M', 'w', '4271', 'S', 'N', '2229', 'I', '5851', 'M', '7427', '9069', '507', 't', '9823', '1015', 'v', '3835', '2015', '3625', 'F', '9195', 'V', '3613', '6431', '3293', '2945', '4373', '2835', 'J']

Ex Output:
I5851M74279069507t98231015v383520153625F


Ex Input:
9, 9, ['3149', '8605', '3995', 'R', '4511', 'W', '9457', 'P', '8439', '1467', 'Y', '7429', 'D', 'R', '4749', '3351', '2555', 'Q', 'F', 'u', '6815', 'B', '4005', '8113', 'A']

Ex Output:
8439


Ex Input:
3, 9, ['y', '5877', '5963', '7733', 'c', 'U', '9497', 'X', '4111', '5007', 'h', '6249', 'e', 'G', '1391', '5707', '2877']

Ex Output:

59637733cU9497X4111