10
abdcced
bdacdac
ecb
dc
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aadecccde
edbaeacad
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 100
d
a
e
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c
d
d
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c
e
ac
d
c
aa
a
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da
e
e
c
e
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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
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ab
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d
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bc
bb
c
bc
a
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ca
ac
c
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d
 3
ab
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 10
a
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c
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a
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 5
cab
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caa
ccc
aca
 3
ac
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ca
 5
ab
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cd
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ffffffffff
 16
ddgcb
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gha
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ddfb
fggbc
edb
hd
d
hfgcabf
hdaef
fhbcdgba
chee
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ecb
 50
agecd
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dicbbddc
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f

0
 35
 5
 6
 9
 5
 10
 7
 37

import java.io.*;
import java.util.*;

public class TaskC {
	BufferedReader br;
	PrintWriter out;
	StringTokenizer stok;

	int charToNum(char c) {
		return (int) c - (int) 'a';
	}

	void solve() throws IOException {
		int n = nextInt();
		String[] data = new String[n];
		for (int i = 0; i < n; i++) {
			data[i] = nextToken();
		}
		int[][] ans = new int[26][26];
		for (int i = 0; i < n; i++) {
			int x = charToNum(data[i].charAt(0));
			int y = charToNum(data[i].charAt(data[i].length() - 1));
			for (int j = 0; j < 26; j++) {
				if (ans[j][x] != 0) {
					ans[j][y] = Math.max(ans[j][y],
							ans[j][x] + data[i].length());
				}
			}
			ans[x][y] = Math.max(ans[x][y], data[i].length());

		}
		int res = 0;
		for (int i = 0; i < 26; i++) {
			res = Math.max(ans[i][i], res);
		}
		out.println(res);
	}

	String nextToken() throws IOException {
		while (stok == null || !stok.hasMoreTokens()) {
			String s = br.readLine();
			if (s == null) {
				return null;
			}
			stok = new StringTokenizer(s);
		}
		return stok.nextToken();
	}

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

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

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

	char nextChar() throws IOException {
		return (char) (br.read());
	}

	String nextLine() throws IOException {
		return br.readLine();
	}

	void run() throws IOException {
		// br = new BufferedReader(new FileReader("input.txt"));
		// out = new PrintWriter("output.txt");
		br = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		solve();
		br.close();
		out.close();
	}

	public static void main(String[] args) throws IOException {
		// Locale.setDefault(Locale.US);
		new TaskC().run();
	}
}