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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.StringTokenizer;

public class A implements Runnable {
	private int[][] length;
	private void solve() throws NumberFormatException, IOException {
		length = new int[26][26];
		int n = in.nextInt();
		int max = 0;
		for (int i = 0; i < n; i++) {
			String str = in.next();
			int first = str.charAt(0) - 'a';
			int last = str.charAt(str.length() - 1) - 'a';
			for (int j = 0; j < 26; j++) {
				if (length[j][first] != 0 || j == first)
					length[j][last] = Math.max(length[j][last], length[j][first] + str.length());
			}
		}
		for (int i = 0; i < 26; i++)
			max = Math.max(max, length[i][i]);
		out.println(max);
	}

	FastScanner in;
	PrintWriter out;

	class FastScanner {
		BufferedReader in;
		StringTokenizer st;

		public FastScanner(Reader reader) {
			in = new BufferedReader(reader);
		}

		private boolean hasNext() throws IOException {
			while (st == null || !st.hasMoreTokens()) {
				String line = in.readLine();
				if (line == null)
					return false;
				st = new StringTokenizer(line);
			}
			return true;
		}

		private String next() throws IOException {
			if (!hasNext()) {
				return null;
			} else {
				return st.nextToken();
			}
		}

		private int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}
	}

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

	@Override
	public void run() {
		try {
			in = new FastScanner(new InputStreamReader(System.in));
			out = new PrintWriter(System.out);
			solve();
			out.flush();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (NumberFormatException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
