def extract_arguments(fh):
    datasets = []
    while True:
        n = int(fh.readline().strip())
        if n == 0:
            break
        S = list(map(int, fh.readline().strip().split()))
        datasets.append((n, S))
    return datasets

# if __name__ == "__main__":
#     input_path = sys.argv[1]
#     with open(input_path, 'r') as fh: 
#     datasets = extract_arguments(fh)
#     for dataset in datasets:
#         n, S = dataset
#         f(n, S)