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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.*;


public class C
{
    BufferedReader in;
    PrintStream out;
    StringTokenizer tok;
    public C() throws NumberFormatException, IOException
    {
        in = new BufferedReader(new InputStreamReader(System.in));
        //in = new BufferedReader(new FileReader("in.txt"));
        out = System.out;
        run();
    }

    void run() throws NumberFormatException, IOException
    {
        int n = nextInt();
        int maxmax = 0;
        int[][] max = new int[26][26];
        String[] s = new String[n];
        for(int i = 0; i < n; i++)
            s[i] = nextToken();
        for(int i = n-1; i>=0; i--)
        {
            char start = s[i].charAt(0);
            char end = s[i].charAt(s[i].length()-1);    
            for(int j = 0; j <26; j++)
            {
                if(max[end-'a'][j]>0)
                max[start-'a'][j] = Math.max(max[start-'a'][j], max[end-'a'][j]+s[i].length());
            }
            max[start-'a'][end-'a'] = Math.max(max[start-'a'][end-'a'], s[i].length());
        }
        for(int i = 0; i <26; i++)
            maxmax = Math.max(maxmax, max[i][i]);
        out.println(maxmax);
    }
    public static void main(String[] args) throws NumberFormatException, IOException 
    {
        new C();
    }
    String nextToken() throws IOException
    {
        if(tok == null || !tok.hasMoreTokens()) tok = new StringTokenizer(in.readLine());
        return tok.nextToken();
    }
    int nextInt() throws NumberFormatException, IOException
    {
        return Integer.parseInt(nextToken());
    }
    long nextLong() throws NumberFormatException, IOException
    {
        return Long.parseLong(nextToken());
    }
    double nextDouble() throws NumberFormatException, IOException
    {
        return Double.parseDouble(nextToken());
    }
}
