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
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cgeejggc
acfd
jjg
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eghhebiic
bih
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jjaa
idc
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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.*;

import javax.sound.sampled.AudioFormat.Encoding;

public class Main {
    static BufferedReader br = new BufferedReader(new InputStreamReader(
            System.in));
    static StreamTokenizer in = new StreamTokenizer(br);
    static PrintWriter out = new PrintWriter(System.out);

    public static void main(String[] args) throws IOException {
        int a, b;
        String str;

        int n = nextInt();
        int dp[][] = new int[26][26];
        for (int c = 1; c <= n; c++) {
            str = next();
            a = str.charAt(0) - 'a';
            b = str.charAt(str.length() - 1) - 'a';
            for (int i = 0; i < 26; i++)
                if (dp[i][a] > 0)
                    dp[i][b] = Math.max(dp[i][b], dp[i][a] + str.length());
            dp[a][b] = Math.max(dp[a][b], str.length());
        }

        int max = 0;
        for (int i = 0; i < 26; i++)
            max = Math.max(max, dp[i][i]);
        out.println(max);
        out.flush();
        out.close();
    }

    static String next() throws IOException {
        in.nextToken();
        return in.sval;
    }

    static char nextChar() throws IOException {
        in.nextToken();
        return in.sval.charAt(0);
    }

    static int nextInt() throws IOException {
        in.nextToken();
        return (int) in.nval;
    }

    static long nextLong() throws IOException {
        in.nextToken();
        return (long) in.nval;
    }

    static float nextFloat() throws IOException {
        in.nextToken();
        return (float) in.nval;
    }

    static double nextDouble() throws IOException {
        in.nextToken();
        return in.nval;
    }
}