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, 13, ['9669', '7783', 'M', 'Q', 'U', '3521', '9305', 'X', 'd', '7401', '4845', '9237', 'P', 'o', 'O']

Ex Output:
U35219305Xd740148459237P


Ex Input:
2, 5, ['3451', 'e', '5763', '4231', '4787']

Ex Output:
e576342314787


Ex Input:
3, 6, ['d', '2387', 'p', 'I', '2663', 'm', '4919', 'n', 'J']

Ex Output:

pI2663m