import sys
n=int(input())
data=[]
for i in range(n):
a=sys.stdin.readline()
data.append(str(len(a))+a)
for i in sorted(list(set(data))):
print(i[1:])
aW1wb3J0IHN5cwpuPWludChpbnB1dCgpKQpkYXRhPVtdCmZvciBpIGluIHJhbmdlKG4pOgogICAgYT1zeXMuc3RkaW4ucmVhZGxpbmUoKQogICAgZGF0YS5hcHBlbmQoc3RyKGxlbihhKSkrYSkKZm9yIGkgaW4gc29ydGVkKGxpc3Qoc2V0KGRhdGEpKSk6CiAgICBwcmludChpWzE6XSk=