#include<iostream>
using namespace std;

const int N = 1010;

string name[N],pwd[N];

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;
    int m = 0;
    for(int i = 0; i<n; i++)
    {
        string cur_name,cur_pwd;
        cin>>cur_name>>cur_pwd;
        string change_pwd = change(cur_pwd);

        if(change_pwd != cur_pwd)
        {
            name[m] = cur_name;
            pwd[m] = change_pwd;
            m++;
        }
    }
    if(!m)
    {
        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<<m<<endl;
        for(int i = 0; i<m; i++) cout<<name[i]<<' '<<pwd[i]<<endl;
    }
    return 0;
}