#include <iostream>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <string>
#include <sstream>
using namespace std;
string s[50],cmd,s1,s2;
int n,N,x,l,p;
int getInt();
string getstring();
bool    isDight(string s)
{
   if (s.size()>=6) return false;
   for (int i = 0; i <s.size();++i)
       if (s[i]>'9' || s[i]<'0') return false;
    return true; 
}
int rfind()
{
       string s1 = getstring();
       int N =  getInt();
       int p = s[N].rfind(s1);
       if (p == string::npos)
            return s[N].size();
       else return p;
}
int find()
{
       string s1 = getstring();
       int N =  getInt();
       int p = s[N].find(s1);
       if (p == string::npos)
            return s[N].size();
       else return p;
}
string copy()
{
      int  N = getInt();
      int  x = getInt();
      int  l = getInt();
      return s[N].substr(x,l);
}
string add()
{
       string s1 = getstring();
       string s2 = getstring();
       if (isDight(s1) && isDight(s2))
       {
          int k = atoi(s1.c_str())+atoi(s2.c_str());
          string s3="";
          while (k>0) s3= char(k%10+'0')+s3,k/=10;
          return s3;
       }
       else 
       return s1+s2;
}
string insert()
{
       string s1 = getstring();
       int N = getInt();
       int x = getInt();
       return s[N].insert(x,s1);
}
void reset()
{
     string s1 = getstring();
     int N = getInt();
     s[N] = s1;
     
}
int getInt()
{
    string temp;
    cin>>temp;
    if (temp == "find")
        return find();
    else if (temp == "rfind")
        return rfind();
    else
    {
        int num = 0;
        for (int i = 0; i <temp.size();++i)
            num = num*10+temp[i]-'0';
        return num;
    }
}
string getstring()
{
    string temp;
    cin>>temp;
    if (temp == "copy")
        return copy();
    else if (temp == "add")
        return add();
    else
        return temp;
}
int main()
{
    freopen("1.in","r",stdin);
    freopen("1.out","w",stdout);
    cin>>n;
    for (int i= 1; i <= n;++i)
        cin>>s[i];
        
    while (true)
    {
          cin>>cmd;
          switch(cmd[0])
          {
            case 'o':
                 exit(0);
                 break;
            case 'c':
                 s[0] = copy();
                 break;
            case 'a':
                 s[0] = add();
            case 'f':
                 s[0] = find();
                 break;
            case 'r':
                 if (cmd == "rfind")
                 {
                    s[0] = rfind();
                 } else
                    reset();  
                 break;
            case 'i':
                 s[0] = insert();
                 break;
            case 'p':
                 if (cmd.size() == 5)
                    cout << s[getInt()]<<endl;
                 else
                 {
                     for (int i = 1; i <= n;++i)
                          cout<<s[i]<<endl;
                 }
                 break;
            default:
                    break;
          }
    }
    return 0;
}
 

E:熱血格鬥場