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
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ca
ac
c
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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
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c
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ahdah
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dabiggfhac
dedigbjbf
ihbdj
iihagchd
gfebhfdi
jbjdcggdh
f

0
 35
 5
 6
 9
 5
 10
 7
 37

import java.util.*; import java.text.*; import java.io.BufferedReader;import java.math.*; import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
import java.util.regex.*; import java.awt.geom.*; import static java.lang.Math.*; import static java.lang.Character.*; import static java.lang.Integer.*; import static java.lang.Double.*; import static java.lang.Long.*; import static java.lang.System.*; import static java.util.Arrays.*;

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;

public class C {
    static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    static PrintStream out = System.out;
    
    static int m = 0, n = 0;
    static int result = 0;
    static int[][] a;
	static void readInput() throws IOException {
		a = new int[26][26];
		for (int i = 0; i < a.length; i++)
			Arrays.fill(a[i], -1);
		
		for (int i = 0; i < 26; i++) a[i][i] = 0;
		
		m = readInt();
		for (int i = 0; i < m; i++) {
			String s = in.readLine();
			int u = s.charAt(0)-'a';
			int v = s.charAt(s.length()-1) - 'a';
			for (int j = 0; j < 26; j++) {
				if (a[j][u] != -1 ) a[j][v] = max ( a[j][v] , a[j][u] + s.length());
				if (v==j) result = max (result, a[j][v]);
			}
		}
		System.out.println(result);
	}

	static void process() {
	}

	public static void main(String[] args) throws IOException {
		readInput();
		process();
	}

	public static void debug(Object...os) { 
		System.err.println(Arrays.deepToString(os));
	} 
	
	static int[] readArrInt() throws IOException {
		return parseArrInt(in.readLine());
	}
	
	static int readInt() throws IOException {
		return new Integer(in.readLine());
	}
	
	static int[] parseArrInt(String s) {
		StringTokenizer st = new StringTokenizer(s);
		ArrayList<Integer> list = new ArrayList<Integer>();
		while (st.hasMoreTokens()) {
			list.add(Integer.parseInt(st.nextToken()));
		}
		Integer[] temp = list.toArray(new Integer[]{});
		int[] res = new int[temp.length];
		for (int i = 0; i < temp.length; i++) {
			res[i] = temp[i];
		}
		return (res);
	}

}
