10
abdcced
bdacdac
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dc
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edbaeacad
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 100
d
a
e
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c
d
d
e
c
e
ac
d
c
aa
a
e
da
e
e
c
e
a
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c
bc
bd
d
da
cc
be
b
a
ee
d
be
be
e
b
a
ed
cb
ab
a
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ac
aa
ed
d
b
eb
e
ed
c
ce
c
d
c
d
d
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ab
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ed
da
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c
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ab
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d
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bc
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c
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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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a
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a
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 5
cab
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caa
ccc
aca
 3
ac
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 5
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ffffffffff
 16
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edb
hd
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 50
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f

0
 35
 5
 6
 9
 5
 10
 7
 37

import java.util.*;
import java.io.*;
import java.math.*;
public class Main
{
    static class Reader 
    { 
        private InputStream mIs;private byte[] buf = new byte[1024];private int curChar,numChars;public Reader() { this(System.in); }public Reader(InputStream is) { mIs = is;} 
        public int read() {if (numChars == -1) throw new InputMismatchException();if (curChar >= numChars) {curChar = 0;try { numChars = mIs.read(buf);} catch (IOException e) { throw new InputMismatchException();}if (numChars <= 0) return -1; }return buf[curChar++];} 
        public String nextLine(){int c = read();while (isSpaceChar(c)) c = read();StringBuilder res = new StringBuilder();do {res.appendCodePoint(c);c = read();}while (!isEndOfLine(c));return res.toString() ;} 
        public String s(){int c = read();while (isSpaceChar(c)) c = read();StringBuilder res = new StringBuilder();do {res.appendCodePoint(c);c = read();}while (!isSpaceChar(c));return res.toString();} 
        public long l(){int c = read();while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }long res = 0; do{ if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read();}while(!isSpaceChar(c));return res * sgn;} 
        public int i(){int c = read() ;while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }int res = 0;do{if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read() ;}while(!isSpaceChar(c));return res * sgn;} 
        public double d() throws IOException {return Double.parseDouble(s()) ;}
        public boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } 
        public boolean isEndOfLine(int c) { return c == '\n' || c == '\r' || c == -1; } 
        public int[] arr(int n){int[] ret = new int[n];for (int i = 0; i < n; i++) {ret[i] = i();}return ret;}
    }
    
    
 
           //       |----|       /\      |    |   -----   |
           //       |   /       /  \     |    |     |     |
           //       |--/       /----\    |----|     |     |
           //       |   \     /      \   |    |     |     |
           //       |    \   /        \  |    |   -----   -------
   
    public static void main(String[] args)throws IOException
    {
        Reader sc=new Reader();
        PrintWriter out=new PrintWriter(System.out);
        int n=sc.i();
        int dp[][]=new int[26][26];
        for(int w=0;w<n;w++)
        {
            String s=sc.s();
            for(int i=0;i<26;i++)
                if(dp[i][s.charAt(0)-97]!=0)
                dp[i][s.charAt(s.length()-1)-97]=Math.max(dp[i][s.charAt(s.length()-1)-97],dp[i][s.charAt(0)-97]+s.length());
            dp[s.charAt(0)-97][s.charAt(s.length()-1)-97]=Math.max(dp[s.charAt(0)-97][s.charAt(s.length()-1)-97],s.length());
        }
        int max=0;
        for(int i=0;i<26;i++)max=Math.max(max,dp[i][i]);
        out.println(max);
        out.flush();
    }
}