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.*;
import java.util.Arrays;

import static java.lang.Math.*;
import static java.lang.Integer.*;
@SuppressWarnings("unused")
public class round121C {

    
    public static void main(String[] args)throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int N = parseInt(br.readLine());
        int [][] dp = new int [30][30];
        for(int i = 0 ; i < N ; ++i){
            char [] in = br.readLine().toCharArray();
            int end = in.length - 1;
            for(int j = 0 ; j < 26 ; ++j){
                if(dp[j][in[0] - 'a'] == 0 && (j != in[0] - 'a'))
                    continue;
                dp[j][in[end] - 'a'] = max(dp[j][in[end] - 'a'], 
                        dp[j][in[0] - 'a'] + in.length);
            }
        }
        int ans = 0;
        for(int i = 0 ; i <= 25 ; ++i){
            ans = max(ans, dp[i][i]);
        }
        System.out.println(ans);        
    }
}
