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.*;
import java.util.*;

public class A {

	final String filename = new String("A").toLowerCase();

	void solve() throws Exception {
		int n = nextInt();
		String[] s = new String[n];
		for (int i = 0; i < n; i++) {
			s[i] = nextToken();
		}
		int ans = 0;
		int inf = Integer.MIN_VALUE / 2;
		for (int i = 0; i < 26; i++) {
			int[] dp = new int[26];
			Arrays.fill(dp, inf);
			dp[i] = 0;
			for (int j = 0; j < n; j++) {
				int first = s[j].charAt(0) - 'a';
				int last = s[j].charAt(s[j].length() - 1) - 'a';
				if (dp[first] != inf) {
					dp[last] = Math.max(dp[last], dp[first] + s[j].length());
				}
				ans = Math.max(ans, dp[i]);
			}
			
		}
		out.println(ans);
	}

	void run() {
		try {
//			in = new BufferedReader(new FileReader(filename + ".in"));
//			out = new PrintWriter(filename + ".out");
			 in = new BufferedReader(new InputStreamReader(System.in));
			 out = new PrintWriter(System.out);

			solve();

			out.close();
		} catch (Exception e) {
			e.printStackTrace();
			System.exit(1);
		}
	}

	BufferedReader in;
	StringTokenizer st;
	PrintWriter out;

	String nextToken() throws Exception {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(in.readLine());
		return st.nextToken();
	}

	int nextInt() throws Exception {
		return Integer.parseInt(nextToken());
	}

	long nextLong() throws Exception {
		return Long.parseLong(nextToken());
	}

	double nextDouble() throws Exception {
		return Double.parseDouble(nextToken());
	}

	public static void main(String[] args) {
		new A().run();
	}

}
