import sys
file_path = sys.argv[1]


def calculate(file_path):
    f = open(file_path,"r")
    lines = f.readlines()
    f.close()

    ll = [line.strip().split(",") for line in lines]
    ll = [l[0].strip() for l in ll]
    ll = list(set(ll))
    print(ll[:3])
    print(len(ll))


calculate(file_path)