#include <iostream>
#include <fstream>
#include <iomanip>

using namespace std; 

const int MAX=100;
ifstream infile;

class List
{
	string name[MAX];
	string ssn[MAX];
	int length;
public:
	List()
	{ 	length=0;}
	int Length() const
	{ 	return length;}
	void Insert(string aName, string aSsn)
	{ 	name[length]=aName;
	  	ssn[length]=aSsn;
	  	length++;
	}
	void Print() const;
	void SelSort()
        {
                string temp,temp2;
                int passCount;
                int minIndex;
                for(passCount=0;passCount<length-1;passCount++)
                {
                        minIndex=passCount;
                        for(int k=passCount+1; k<length; k++)
                        {
                                if(name[minIndex] > name[k])
                                        minIndex=k;
                        }
                        temp=name[minIndex];
			temp2=ssn[minIndex];
                        name[minIndex] = name[passCount];
			ssn[minIndex]=ssn[passCount];
                        name[passCount] = temp;
			ssn[passCount]=temp2;
                }
        }

};

void List:: Print() const
{	for(int k=0; k<length; k++)
		cout<< name[k]<<setw(50 - name[k].length())
			<<ssn[k] << endl;
}
int main()
{
	infile.open("in.txt");
	if(!infile)
	{
		cout<<"Error opening the file!\n"<<endl;
		getchar();
		return 0;
	}
	List myList;
	string nameString;
	string ssnString;
	
	infile>>ssnString;
	getline(infile, nameString);
	while(infile)
	{
		myList.Insert (nameString,ssnString);
		infile>>ssnString;
		getline(infile,nameString);
	}
	myList.SelSort();
	myList.Print();
	return 0;
}