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.Scanner;


public class Main {

    private void doit() {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int [][] list = new int[26][26];
        int [] start = new int [n];
        int [] end = new int [n];
        int [] len = new int [n];
        for(int i = 0; i < n; i++){
            String str = sc.next();
            start[i] = str.charAt(0) - 'a';
            end[i] = str.charAt(str.length() - 1) - 'a';
            len[i] = str.length();
        }

        for(int i = 0; i < n;i++){

            for(int j = 0; j < 26; j++){

                if(list[j][start[i]] > 0){
                    int value = list[j][start[i]] + len[i];
                    list[j][end[i]] = Math.max(list[j][end[i]], value);
                }

            }
            list[start[i]][end[i]] = Math.max(list[start[i]][end[i]], len[i]);
        }
        int ans = 0;
        for(int i =0; i < 26; i++){
            ans = Math.max(ans, list[i][i]);
        }
        System.out.println(ans);
//
//      //debug
//      for(int i=0; i < 26; i++){
//          for(int j = 0; j < 26; j++){
//              System.out.print(list[i][j]);
//          }
//          System.out.println();
//      }
    }
    public static void main(String[] args) {
        Main obj = new Main();
        obj.doit();

    }

}