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.math.BigInteger;
import java.util.*;
import java.util.Map.Entry;

public class Main {
	public static void main(String[] args) throws IOException {
		(new Main()).solve();
	}

	public void Main() {
	}

	void solve() throws IOException {
		// BufferedReader in = new BufferedReader(new
		// InputStreamReader(System.in));
		// Scanner in = new Scanner(System.in);
		MyReader in = new MyReader();
		PrintWriter out = new PrintWriter(System.out);
		// Scanner in = new Scanner(new FileReader("input.txt"));
		// PrintWriter out = new PrintWriter("output.txt");
		
		int n = in.nextInt();
		String[] s  = new String[n];
		K[] b = new K[26];
		P[] res = new P[n];
		P[] fin = new P[n];
		
		for (int i = 0; i < 26; i++) {
			b[i] = new K();
		}
		
		for (int i = 0; i < n; i++) {
			s[i] = in.readLine();
			res[i] = new P();
			fin[i] = new P();
			res[i].first = i;
			res[i].prev = -1;
			res[i].res = s[i].length();
			if (s[i].charAt(0) == s[i].charAt(s[i].length() - 1)) {
				fin[i].first = i;
				fin[i].prev = -1;
				fin[i].res = s[i].length();
			} else {
				fin[i].first = -1;
				fin[i].prev = -1;
				fin[i].res = 0;
			}
			for (Integer t : b[(int)s[i].charAt(0) - (int)'a'].pos) {
				if (res[t].res + s[i].length() > res[i].res) {
					res[i].res = res[t].res + s[i].length();
					res[i].first = res[t].first;
					res[i].prev = t;
				}
				if (s[i].charAt(s[i].length() - 1) == s[t].charAt(0) && res[t].res + s[i].length() > fin[i].res) {
					fin[i].res = res[t].res + s[i].length();
					fin[i].first = res[t].first;
					fin[i].prev = t;
				}
			}
			b[(int)s[i].charAt(s[i].length() - 1) - (int)'a'].pos.add(i);
		}
		
		int max = 0;
		for (int i = 0; i < n; i++) {
			if (fin[i].res > max) {
				max = fin[i].res;
			}
		}
		
		out.print(max);
		
		out.close();
	}

};

class K {
	public ArrayList<Integer> pos;
	
	public K() {
		pos = new ArrayList<Integer>(); 
	}
}

class P {
	public int res, first, prev;
}

class MyReader {
	private BufferedReader in;
	String[] parsed;
	int index = 0;

	public MyReader() {
		in = new BufferedReader(new InputStreamReader(System.in));
	}

	public int nextInt() throws NumberFormatException, IOException {
		if (parsed == null || parsed.length == index) {
			read();
		}
		return Integer.parseInt(parsed[index++]);
	}

	public long nextLong() throws NumberFormatException, IOException {
		if (parsed == null || parsed.length == index) {
			read();
		}
		return Long.parseLong(parsed[index++]);
	}

	public String nextString() throws IOException {
		if (parsed == null || parsed.length == index) {
			read();
		}
		return parsed[index++];
	}

	private void read() throws IOException {
		parsed = in.readLine().split(" ");
		index = 0;
	}

	public String readLine() throws IOException {
		return in.readLine();
	}
};