#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <string>

int reg[10];

using namespace std;

int translate(const char *str)
{
	if (str[0] >= '0' && str[0] <= '9') return reg[str[0] - '0'];

	int out = 0;
	int len = strlen(str);
	for (int i = 0; i < len; i++)
	{
		switch (str[i])
		{
			case 'I':
				if (str[i+1] == 'X') { out += 9; i++; break; }
				if (str[i+1] == 'V') { out += 4; i++; break; }
				out += 1;
				break;
			case 'V':
				out += 5;
				break;
			case 'X':
				if (str[i+1] == 'L') { out += 40; i++; break; }
				if (str[i+1] == 'C') { out += 90; i++; break; }
				out += 10;
				break;
			case 'L':
				out += 50;
				break;
			case 'C':
				if (str[i+1] == 'D') { out += 400; i++; break; }
				if (str[i+1] == 'M') { out += 900; i++; break; }
				out += 100;
				break;
			case 'M':
				out += 1000;
				break;
		}
	}
	return out;
}

string back(int i)
{
	if (i > 10000 || i < 0) return "Error";
	if (i == 0) return "O";

//	cout << "Preklad " << i << endl;

	string out;

	switch (i%10)
	{
		case 1: out = "I"; break;
		case 2: out = "II"; break;
		case 3: out = "III"; break;
		case 4: out = "IV"; break;
		case 5: out = "V"; break;
		case 6: out = "VI"; break;
		case 7: out = "VII"; break;
		case 8: out = "VIII"; break;
		case 9: out = "IX"; break;
	}
	i = i/10;

	switch (i%10)
	{
		case 1: out = "X" + out; break;
		case 2: out = "XX" + out; break;
		case 3: out = "XXX" + out; break;
		case 4: out = "XL" + out; break;
		case 5: out = "L" + out; break;
		case 6: out = "LX" + out; break;
		case 7: out = "LXX" + out; break;
		case 8: out = "LXXX" + out; break;
		case 9: out = "XC" + out; break;
	}
	i = i/10;

	switch (i%10)
	{
		case 1: out = "C" + out; break;
		case 2: out = "CC" + out; break;
		case 3: out = "CCC" + out; break;
		case 4: out = "CD" + out; break;
		case 5: out = "D" + out; break;
		case 6: out = "DC" + out; break;
		case 7: out = "DCC" + out; break;
		case 8: out = "DCCC" + out; break;
		case 9: out = "CM" + out; break;
	}
	i = i/10;

	for (int k = 0; k < i; k++) out = "M" + out;

//	cout << "prelozeno jako " << out << endl;
	return out;
}


int vypocti(const char* str)
{
	string numero;
	bool pl = true;
	int res = 0;

	int len = strlen(str);
	for (int i = 0; i <= len; i++)
	{
		if (str[i] == '+' || str[i] == '-' || str[i] == 0)
		{
			int x = translate(numero.c_str());
			if (x < 0) return -1;
			res += (pl ? +1 : -1) * x;
			pl = (str[i] == '+');
			numero = "";
		} else
		{
			numero += str[i];
		}
	}
	return res;
}

int main()
{
	string in;

	for (int i = 0; i < 10; i++) reg[i] = -1;

	while(true)
	{
		cin >> in;
		if (in == "QUIT")
		{
			cout << "Bye" << endl;
			return 0;
		}
		else if (in == "RESET")
		{
			for (int i = 0; i < 10; i++) reg[i] = -1;
			cout << "Ready" << endl;
		} else
		{
			int regnum = in[0] - '0';
			int res = vypocti(in.c_str() + 2);
			string s = back(res);
			if (s == "Error") cout << s << endl;
			else
			{
				reg[regnum] = res;
				cout << regnum << "=" << s << endl;
			}
		}
	}
	return 0;
}