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:
2, 5, ['7791', '8561', 'r', 'e', '7821', '2611', '1', 'P', 'n', '4097', 'z', 'a', '9589', 'M', '8867']

Ex Output:
8561re7821


Ex Input:
3, 12, ['8127', '8893', 'u', 'a', '3305', 'Y', '9121', 'h', 'R', '4505', '7829', 'T', '6431', '717', '6317', '4431', '9801', '1485', 'y', '2915', 'i', 'o', '2073', '9427', '2391', '1919']

Ex Output:
ua3305Y9121hR45057829T


Ex Input:
5, 21, ['K', '1227', 'z', '83', 'd', 'H', 'c', '4615', '9639', 'R', 'z', '1421', '6709', 'L', 'M', 'p', 'S', '4789', '4453', '5325', 'd', '2913', '5793', 'D', 'K']

Ex Output:

dHc46159639Rz14216709LMpS478944535325d