TASK DEFINITION: In this task, you are given an input i,A where i is an integer and A is an array. You need to find every ith element of A starting with the 1st element.
PROBLEM: 1, ['E', '2873', '9021', '5331', '5345', 'd']

SOLUTION: E, 2873, 9021, 5331, 5345, d

PROBLEM: 17, ['C', '5583', '4989', '2271', '503', 'B', 'Y', '2555', '591', 'z', '1521', '5063', '3365', 's', '8363', '6635', '4045', 'B', 'l', 'y', 's', '765', '8235', 'Y', 'V', '9715', 'l', '6215', 'a', '3095', '2145', 'N', '6083', 'k', '1257']

SOLUTION: C, B, 1257

PROBLEM: 12, ['5419', '3955', '5927', 'm', '309', '4369', '4433', '9377', 'S', '769', 'i', '5641', '9957', '249', 'h', 's', 'B', '5975', 'k', 'T', '5615', '6747', 'M', '6053', '699', 'S', 'v', 'w', 'E', '5507', '1603', '8085', 'l', '6693', 'l', '5217', '2467', '4377', '2781', '5437', '659', 'D', 'q', 'M', '4359']

SOLUTION:
5419, 9957, 699, 2467