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.util.*;

public class string {

    class pair{
        int F, S;
        int len;
        pair(char u, char v, int l){
            F = u - 'a';
            S = v - 'a';
            len = l;
        }
    }
    
    pair a[];
    
    void solve() throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int i, j, k, n;
        n = Integer.parseInt(br.readLine());
        a = new pair[n];
        for(i = 0; i < n; i++){
            String s = br.readLine();
            a[i] = new pair(s.charAt(0), s.charAt(s.length() - 1), s.length());
        }
        
        int dp[][] = new int[26][26];
        for(i = 0; i < n; i++){
            for(j = 0; j < 26; j++){
                if(dp[j][a[i].F] != 0 || j == a[i].F){
                    dp[j][a[i].S] = Math.max(dp[j][a[i].S], dp[j][a[i].F] + a[i].len);
                }
            }
        }
        int ans = dp[0][0];
        for(i = 1; i < 26; i++) if(dp[i][i] > ans) ans = dp[i][i];
        System.out.println(ans);
    }
    
    public static void main(String[] args) throws IOException {
        new string().solve();
    }
    
}
