// editor1
import re

# Read number of visitors
n = int(input().strip())

names = []
valid = True

for _ in range(n):
    name = input().strip()
    # Check for invalid characters (only alphabets allowed)
    if not re.match("^[A-Za-z]+$", name):
        valid = False
    names.append(name)

if valid:
    print(" ".join(names))
else:
    print("Invalid input")