#!/usr/bin/python3
import sys


def main():
    parametros = len(sys.argv) - 1
    if len(sys.argv) - 1 == 0:
        print("0 arguments.")
    elif len(sys.argv) - 1 == 1:
        print("1 argument:")
        print("1: {}".format(sys.argv[1]))
    else:
        print("{} arguments:".format(parametros))
        for count in range(1, parametros + 1):
            print("{}: {}".format(count, sys.argv[count]))

if __name__ == "__main__":
    main()
