#include <iostream>
using namespace std;
const int N=1010;
string change(string str)
{
    string res;
    for(auto c:str)
      if(c=='1') res+="@";
      else if(c=='0') res+="%";
      else if(c=='l') res+="L";
      else if(c=='O') res+="o";
      else res+=c;

    return res;
}
int main()
{
    int n;
    cin>>n;
    string change_id[N],change_pwd[N];
    int k=0;
    for(int i=0;i<n;i++)
    {
        string id,pwd;
        cin>>id>>pwd;
        string changed_pwd=change(pwd);

        if(pwd!=changed_pwd)
        {
            change_pwd[k]=changed_pwd;
            change_id[k]=id;
            k++;
        }
    }

    if(!k)
    {
        if(n==1) puts("There is 1 account and no account is modified");
        else printf("There are %d accounts and no account is modified",n);
    }else
    {
        cout<<k<<endl;
    for(int i=0;i<k;i++)
    {
        cout<<change_id[i]<<' '<<change_pwd[i]<<endl;
    }
    }
    return 0;
}