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.io.*;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		int max = 0, n = Integer.parseInt(in.readLine()),dpLen[][] = new int[1<<5][1<<5];				
		for (int i = 1; i<=n; i++)
		{			
			String s = in.readLine();			
			int end = s.charAt(s.length()-1)-'a',thru = s.charAt(0)-'a';	
			if (end==thru) {
				dpLen[thru][end] += s.length();
				if (max<dpLen[thru][end]) max = dpLen[thru][end];
			}
			else if (s.length()>dpLen[thru][end])
				dpLen[thru][end] = s.length();			
			for (int start = 0; start+'a'<='z';start++){
				boolean sp =(end==thru)&&(start==thru);				
				if (dpLen[start][thru]!=0&&dpLen[start][end]<dpLen[start][thru]+s.length()){					
					if (!sp)dpLen[start][end] = dpLen[start][thru]+s.length();					
					if (end==start&&max<dpLen[start][end]){						
						max = dpLen[start][end];					
					}
				}
			}
		}
		System.out.println(max);
	}
}