instruction:
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.
question:
3, 15, ['1833', 'D', 'i', 'i', 'O', '4545', '133', '689', 'B', '9483', 'J', 'o', '4723', '6907', '3511', '3375', '7269', '545', 'C', '5563']
answer:
iiO4545133689B9483Jo472369073511


question:
8, 8, ['137', 'b', '7765', 'l', 'E', '6783', '4243', '715', 'm', 'R', '4375', '8647', 'c', 'l', '5443', '2711', 'x', 'J', '3455', 'x']
answer:
715


question:
12, 21, ['9559', '3287', 'd', '9059', '9873', '7785', 'y', 'M', '6949', 'n', '3163', 's', 'C', '8997', 'u', '5605', '2991', '113', 'I', '6353', 'D', '2977', '3087', '7943', 'D']
answer:

sC8997u56052991113I6353D