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
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.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
import java.util.Arrays;
import java.util.Scanner;
import java.util.Stack;

public class solution {
	static StreamTokenizer in = new StreamTokenizer(new BufferedReader(
			new InputStreamReader(System.in)));
	static PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
	static int n;

	public static void main(String[] args) throws IOException {
		int n = nextInt();
		int record[][] = new int[26][26];
		int a, b;
		String temp;
		int visit[] = new int[26];

		for (int i = 1; i <= n; i++) {
			temp = next();
			a = temp.charAt(0) - 'a';
			b = temp.charAt(temp.length() - 1) - 'a';
			if (visit[a] == 0) {
				visit[a] = 1;
				record[a][b] = temp.length();
			}
			if (a == b) {
				record[a][a] = Math.max(record[a][a], temp.length());
				continue;
			}
			for (int v = 0; v <= 25; v++) {
				if (visit[v] == 1) {
					if (record[v][a] == 0)
						continue;
					else if (record[v][b] < temp.length() + record[v][a])
						record[v][b] = temp.length() + record[v][a];
				}
			}
		}

		int lon = 0;
		for (int i = 0; i <= 25; i++)
			if (record[i][i] > lon)
				lon = record[i][i];
		out.println(lon);
		out.flush();
		out.close();
	}

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

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

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

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

	 	   				 			     	 	  	