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
icidbec
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cgeejggc
acfd
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dbigbjiehj
cedif
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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

import java.io.*;
import java.util.*;
import java.math.*;
import java.awt.geom.*;

import static java.lang.Math.*;

public class Main implements Runnable {

	static String filename = "";

	public void solve() throws Exception {
		int n = sc.nextInt();
		String[] names = new String[n];
		for (int i = 0; i < n; i++) {
			names[i] = in.readLine();
		}
		int[][] dp = new int[26][26];
		for (int i = 0; i < n; i++) {
			int first = names[i].charAt(0) - 'a';
			int last = names[i].charAt(names[i].length() - 1) - 'a';
			for (int j = 0; j < 26; j++) {
				if (dp[j][first] != 0) {
					dp[j][last] = max(dp[j][last], dp[j][first] + names[i].length());
				}
			}
			dp[first][last] = max(dp[first][last], names[i].length());
		}
		int ans = 0;
		for (int i = 0; i < 26; i++) {
			//out.println(dp[i][i]);
			ans = max(ans, dp[i][i]);
		}
		out.println(ans);
	}

	BufferedReader in;
	PrintWriter out;
	FastScanner sc;

	public static void main(String[] args) {
		new Thread(null, new Main(), "", 1 << 25).start();
	}

	@Override
	public void run() {
		try {
			init();
			solve();
		} catch (Throwable e) {
			throw new RuntimeException(e);
		} finally {
			out.close();
		}
	}

	void init() throws Exception {
		in = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		sc = new FastScanner(in);
	}
}

class FastScanner {

	BufferedReader reader;
	StringTokenizer strTok;

	public FastScanner(BufferedReader reader) {
		this.reader = reader;
	}

	public String nextToken() throws IOException {
		while (strTok == null || !strTok.hasMoreTokens()) {
			strTok = new StringTokenizer(reader.readLine());
		}

		return strTok.nextToken();
	}

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

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

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

	public BigInteger nextBigInteger() throws IOException {
		return new BigInteger(nextToken());
	}

}
