Task: Program Execution
Input (English): 1, ['R', 'y', '2513', 'A', 'N', 'u', 'v', '27', 'I', 'i', 'f', 'u', 'm', '8545', '1431', '4505', 'C', 'X', '4181', 'e', 'Z', 's', 'U', 's', '4901']
Output (English): R