#7.1.3
list1 = input().split(' ')
print(list1)
list2 = []
for i in list1:
    if '2'<=i<='5':
        list2.append(i)
print(list2)
str1 = '-'.join(list2)
print(str1)

txt1 = open('7.1.3.txt',"w")
txt1.write(str1 + '\n')
txt1.writelines(list2)
txt1.close()