codeforces#P988B. Substrings Sort
Substrings Sort
Description
You are given $n$ strings. Each string consists of lowercase English letters. Rearrange (reorder) the given strings in such a way that for every string, all strings that are placed before it are its substrings.
String $a$ is a substring of string $b$ if it is possible to choose several consecutive letters in $b$ in such a way that they form $a$. For example, string "for" is contained as a substring in strings "codeforces", "for" and "therefore", but is not contained as a substring in strings "four", "fofo" and "rof".
The first line contains an integer $n$ ($1 \le n \le 100$) — the number of strings.
The next $n$ lines contain the given strings. The number of letters in each string is from $1$ to $100$, inclusive. Each string consists of lowercase English letters.
Some strings might be equal.
If it is impossible to reorder $n$ given strings in required order, print "NO" (without quotes).
Otherwise print "YES" (without quotes) and $n$ given strings in required order.
Input
The first line contains an integer $n$ ($1 \le n \le 100$) — the number of strings.
The next $n$ lines contain the given strings. The number of letters in each string is from $1$ to $100$, inclusive. Each string consists of lowercase English letters.
Some strings might be equal.
Output
If it is impossible to reorder $n$ given strings in required order, print "NO" (without quotes).
Otherwise print "YES" (without quotes) and $n$ given strings in required order.
Samples
5
a
aba
abacaba
ba
aba
YES
a
ba
aba
aba
abacaba
5
a
abacaba
ba
aba
abab
NO
3
qwerty
qwerty
qwerty
YES
qwerty
qwerty
qwerty
Note
In the second example you cannot reorder the strings because the string "abab" is not a substring of the string "abacaba".