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:
4, 18, ['r', 'W', '2683', '1451', 'b', '5295', '6037', 's', 'o', 'p', 'S', 'C', 'U', 'z', 'K', '6539', '4519', 'T', 'i', '4467']

Ex Output:
1451b52956037sopSCUzK65394519T


Ex Input:
1, 2, ['T', 'r']

Ex Output:
Tr


Ex Input:
11, 21, ['3941', '1169', '2867', 'v', '3439', '1829', 'k', 'P', 'V', 'Z', 'L', '7093', 'E', '1279', '4983', '4677', '6597', 'u', 'E', 'f', 'r', '1635']

Ex Output:

L7093E1279498346776597uEfr