def registerparticipants(name1, name2):
    return (name1, name2)
name1 = input()
name2 = input()
print(registerparticipants(name1, name2))

def registerparticipants(name1, name2):
    return (name1, name2)
name1 = input()
name2 = input()
print(registerparticipants(name1, name2))