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:
1, 15, ['F', '6719', '7233', '4085', 'Q', 'N', '3827', '9487', 'o', '2955', '3199', '6321', 'R', '1021', 'u', 'k', '9039', 'k', 'c', '1197', '805', 'f', '5155', 'P', 'm', '6037', 'J', '6089', 'W', 'N']
answer:
F671972334085QN38279487o295531996321R1021u


question:
8, 20, ['6321', '8465', '2149', '763', '6673', '4537', 'e', '7015', 'D', '3603', '8923', '2289', '3251', '2857', 'L', '5887', '6521', '7615', '235', 'V', '5551', 'V', '5127', '6743', '8281', '4365', '3747', 'A']
answer:
7015D36038923228932512857L588765217615235V


question:
1, 1, ['U', '2203', 'L', 'l', '6115', 'Y', 'p', '9061', '6433', '7473', '2331', '6325', 'k', '7911', 'V', 'h', '4501', 'v', 'U', '5783']
answer:

U