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
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c
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cgeejggc
acfd
jjg
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eghhebiic
bih
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idc
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dbigbjiehj
cedif
ahidfaaajg
hfhhiccbgb
dgegjgieif
hgjebhfdc
j
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ahdah
bijbhh
a
dabiggfhac
dedigbjbf
ihbdj
iihagchd
gfebhfdi
jbjdcggdh
f

0
 35
 5
 6
 9
 5
 10
 7
 37

/*st-6:45 */
import java.util.*;
import java.io.*;

public class p11{

    static class FastReader{
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                     InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException  e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }

    public static void main (String[] args) throws Exception{
        FastReader sc = new FastReader();

        int n = sc.nextInt();
        String[] arr = new String[n];
        Map<Integer, ArrayList<Integer>> map = new HashMap<Integer, ArrayList<Integer>>();

        for(int i=0;i<n;i++){
            arr[i] = sc.nextLine();
            int key = (int)(arr[i].charAt(0)-'a');
            ArrayList<Integer> list = map.get(key);
            if(list==null)
                list = new ArrayList<Integer>();

            list.add(i);
            map.put(key, list);
        }

        int[][] dp = new int[n][26];

        for(int i=0;i<n;i++){
            int st = (int)arr[i].charAt(0)-'a';
            int end = (int)arr[i].charAt(arr[i].length()-1)-'a';

            dp[i][st] = Math.max(dp[i][st], arr[i].length());

            ArrayList<Integer> clist = map.get(st);
            clist.remove(0);
            map.put(st, clist);

            clist = map.get(end);
            if(clist==null) continue;

            for(int j: clist){
                for(int k=0;k<26;k++)
                    dp[j][k] = Math.max(dp[j][k], dp[i][k]+arr[j].length());
            }


        }


        int ans = 0;
        for(int i=0;i<n;i++){
            int end = (int)arr[i].charAt(arr[i].length()-1)-'a';
            ans = Math.max(ans, dp[i][end]);
        }


        System.out.println( ans );

    }

}
