~cpp 
// ing..
#include <vector>
#include <map>
#include <iostream>
#include<fstream>
using namespace std;

struct student
{
	string name;
	int score;
};

int main()
{
	map<char, char> rule1;
	map<char, char> rule2;
	map<char, char> rule3;
	
		rule1['b']='1';         rule2['1']='z';         rule3['z']='a'; 
        rule1[' ']='2';         rule2['2']='x';         rule3['x']='b'; 
        rule1['z']='3';         rule2['3']=' ';         rule3[' ']='c'; 
        rule1['a']='4';         rule2['4']='y';         rule3['y']='d'; 
        rule1['y']='5';         rule2['5']='a';         rule3['a']='e'; 
        rule1['x']='6';         rule2['6']='w';         rule3['w']='f'; 
        rule1['i']='7';         rule2['7']='v';         rule3['v']='g'; 
        rule1['h']='8';         rule2['8']='u';         rule3['u']='h'; 
        rule1['g']='9';         rule2['9']='b';         rule3['b']='i'; 
        rule1['\n']='0';        rule2['0']='t';         rule3['t']='j'; 
        rule1['c']='!';         rule2['!']='s';         rule3['s']='k'; 
        rule1['f']='@';         rule2['@']='c';         rule3['c']='l'; 
        rule1['e']='#';         rule2['#']='r';         rule3['r']='m'; 
        rule1['d']='$';         rule2['$']='o';         rule3['o']='n'; 
        rule1['w']='%';         rule2['%']='d';         rule3['d']='o'; 
        rule1['u']='^';         rule2['^']='p';         rule3['p']='p'; 
        rule1['v']='&';         rule2['&']='e';         rule3['e']='q'; 
        rule1['j']='*';         rule2['*']='q';         rule3['q']='r'; 
        rule1['k']='(';         rule2['(']='l';         rule3['l']='s'; 
        rule1['l']=')';         rule2[')']='m';         rule3['m']='t'; 
        rule1['m']='<';         rule2['<']='f';         rule3['f']='u'; 
        rule1['n']='>';         rule2['>']='g';         rule3['g']='v'; 
        rule1['o']='?';         rule2['?']='\n';        rule3['\n']='w'; 
        rule1['p']='{';         rule2['{']='h';         rule3['h']='x'; 
        rule1['t']='}';         rule2['}']='i';         rule3['i']='y'; 
        rule1['s']='=';         rule2['=']='j';         rule3['j']='z'; 
        rule1['q']='+';         rule2['+']='k';         rule3['k']='2'; 
        rule1['r']='-';         rule2['-']='n';         rule3['n']='\n'; 

	vector<map> vec;
	vec.push_back(rule1);
	vec.push_back(rule2);
	vec.push_back(rule3);
	
	ifstream fin("input.txt");
	char ch,temp;
	while(fin.get(ch))
	{
		temp=ch;
		for(map::iterator i=vec.begin(); i< vec.end() ;i++)
		{
			temp = (i*)[temp];
		}
	}
	cout << endl;
	return 0;
}