10
abdcced
bdacdac
ecb
dc
eaeeebdd
adcdbadcac
eb
aadecccde
edbaeacad
accd
 100
d
a
e
eb
c
d
d
e
c
e
ac
d
c
aa
a
e
da
e
e
c
e
a
c
c
bc
bd
d
da
cc
be
b
a
ee
d
be
be
e
b
a
ed
cb
ab
a
ea
ac
aa
ed
d
b
eb
e
ed
c
ce
c
d
c
d
d
ee
e
b
ea
ea
da
ab
ba
ed
da
ec
ea
bd
ee
dc
d
bd
d
c
cc
ab
bd
a
ad
e
d
e
bc
bb
c
bc
a
a
e
ca
ac
c
ad
c
be
d
 3
ab
acb
ba
 10
a
b
a
c
b
a
b
a
a
a
 5
cab
bbc
caa
ccc
aca
 3
ac
abc
ca
 5
ab
bc
cd
de
ffffffffff
 16
ddgcb
fgbhgbdg
gha
dh
ddfb
fggbc
edb
hd
d
hfgcabf
hdaef
fhbcdgba
chee
cafeggc
f
ecb
 50
agecd
cghafi
fiide
iecc
jbdcfjhgd
diee
hfeg
ehc
gfijgjh
gacaifebg
dicbbddc
hjgciaei
jjcdh
g
gc
cf
hfdjhd
c
icidbec
ji
eeh
cgeejggc
acfd
jjg
ajefdj
eghhebiic
bih
gbb
jjaa
idc
gafi
ecg
dbigbjiehj
cedif
ahidfaaajg
hfhhiccbgb
dgegjgieif
hgjebhfdc
j
ahehd
ahdah
bijbhh
a
dabiggfhac
dedigbjbf
ihbdj
iihagchd
gfebhfdi
jbjdcggdh
f

0
 35
 5
 6
 9
 5
 10
 7
 37

import java.util.*;
import java.io.*;

public class Main
{
	public static void main(String arg[])
	{
		new Main();
	}
	Main()
	{
		new TaskA();
	}
}

class TaskA
{
	TaskA()
	{
		Scanner cin=new Scanner(new BufferedInputStream(System.in));
		int n=cin.nextInt();
		String s[]=new String[n];
		for (int i=0;i<n;i++)
			s[i]=cin.next();
		int ans=0;
		for (int r=0;r<26;r++)
		{
			int f[]=new int[26];
			Arrays.fill(f,-19930309);
			f[r]=0;
			for (int i=0;i<n;i++)
			{
				f[s[i].charAt(s[i].length()-1)-'a']=Math.max(f[s[i].charAt(s[i].length()-1)-'a'],f[s[i].charAt(0)-'a']+s[i].length());
			}
			ans=Math.max(f[r],ans);
		}
		System.out.println(ans);
		cin.close();
	}
}