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.*;

public class Main {

    public static void main(String args[]) {
        System.out.println(run());
    }

    static int run() {
        Scanner in = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        
        int inputs = in.nextInt();
        int [][] a = new int[26][26];
        for(int i = 0; i < inputs; i++){
            String s = in.next();
            int l = s.length();
            int b = s.charAt(0) - 'a';
            int e = s.charAt(l-1) - 'a';
            for(int k = 0; k <= 25; k++){
                int t = 0;
                if(a[k][b]!=0) t = a[k][b] + l;
                if(a[k][e] < t) a[k][e] = t;
            }
            if(a[b][e] < l) a[b][e] = l;
        }
        int save = 0;
        for(int i = 0; i <= 25; i++){
            if(save < a[i][i]) {
                save = a[i][i];
            }
        }
        return save;
    }
    
   
}
