Task: Program Execution
Input (English): 3, 4, ['J', 'f', 'r', '8743', 'R', 'U', 'c', 'k', '4957', 'K', '1259', '8203', 'z', 'f', '5291', 'k', 'M', '2457']
Output (English): r, c, 1259, 5291