我也是，
求调*2
```cpp
#include<cstdio>
#include<iostream>
#include<cmath>
using namespace std;
int n,v;
string a[50];
int b[50];
int ch(string s,string s2)
{
int y=-1;
for (int i=0;i<s2.size()-1;i++)
{
int k;
for ( k=i;k>=0;k--)
if (s2[k]!=s[s.size()-1-i+k]) break;
if (k==-1) y=i;
}
return y;
}
void dfs(string s){
for (int i=1;i<=n;i++)
{
if (b[i]==2) continue;
string s1=s,s2=a[i];
int o=ch(s,s2);
if (o==-1) continue;
for (int k=o+1;k<s2.size();k++)
s=s+s2[k];
if (s.size()==s1.size()) continue;
b[i]++;
v=v>=s.size()?v:s.size();
dfs(s);
s=s1,b[i]--;
}
}
int main(){
cin>>n;
for (int i=1;i<=n;i++)
{
cin>>a[i];a[n+i]=a[i];
}
char h;
cin>>h;
for (int i=1;i<=n;i++)
{
string ff=a[i];
if (ff[0]==h)
{
b[i]=1;
v=v>ff.size()?v:ff.size();
dfs(ff);
b[i]=0;
}
}
printf ("%d\n",v);
return 0;
}
```
by KDL_ANIPLEX @ 2023-10-14 21:57:56
我OK了，
虽然看不懂你的代码，
但
盲猜
你的问题和我一样；
[建议阅读](https://www.luogu.com.cn/discuss/546354)
@[Suboil](/user/1026350)
by KDL_ANIPLEX @ 2023-10-14 22:07:55
@[XiaoKaiWen1](/user/975287) hh说真的之前一时兴起写的，现在我也看不太懂
by Suboil @ 2023-10-15 00:25:16