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.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class C
{
    public static BufferedReader br;
    public static StringTokenizer inp;
    public static PrintWriter out;
    
    public static void main(String[] args)  throws IOException
    {

        br = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(System.out);
        int n = Integer.parseInt(br.readLine());
        int m = 'z'-'a'+1;
        int ans[][] = new int[m][m];
        for(int i = 0 ; i < n ; i++)
        {
            String s = br.readLine();
            int f = s.charAt(0)-'a';
            int l = s.charAt(s.length()-1)-'a';
            
            for(int j = 0 ; j < m ; j++)
            {
                if(ans[j][f]>0)
                {
                    ans[j][l] = Math.max(ans[j][l], ans[j][f]+s.length());
                }
            }
            ans[f][l] = Math.max(ans[f][l], s.length());
        }
        
        
        int a = 0;
        for(int i = 0 ; i < m ; i++)a = Math.max(a, ans[i][i]);
        
        System.out.println(a);
        
        
        br.close();
        out.close();
    }
    
    public static void read() throws IOException{inp = new StringTokenizer(br.readLine());}
    public static int nextInt(){return Integer.parseInt(inp.nextToken());}
    public static long nextLong(){return Long.parseLong(inp.nextToken());}
    public static double nextDouble(){return Double.parseDouble(inp.nextToken());}
    public static String next(){return inp.nextToken();}
    
}
