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

struct
{
	char *c;
	int n;
} roman[] = {
{"IV", 4},
{"IX", 9},
{"XL", 40},
{"XC", 90},
{"CD", 400},
{"CM", 900},
{"O", 0},
{"I", 1},
{"V", 5},
{"X", 10},
{"L", 50},
{"C", 100},
{"D", 500},
{"M", 1000},
{"Q", -1}

};

struct
{
	char *c;
	int n;
} roman2[] = {
{"M", 1000},
{"CM", 900},
{"D", 500},
{"CD", 400},
{"C", 100},
{"XC", 90},
{"L", 50},
{"XL", 40},
{"X", 10},
{"IX", 9},
{"V", 5},
{"IV", 4},
{"I", 1},
{"Q", -1}

};


int dlzka = 0;

int parse(char *start)
{
	int ret = 0;
	char *s = start;
	int i;

	/*printf("parsea: %s\n", s); */
	while (*s)
{
	if (*s == '+' || *s == '-')
	{
/*printf("parse: %d\n", ret); */
		dlzka = s - start;
/*printf("dlzka: %d\n", dlzka);*/
		return ret;
	}
	for (i = 0; roman[i].n != -1; i++)
	{
		if (strncmp(s,roman[i].c, strlen(roman[i].c)) == 0)
		{
			ret += roman[i].n;
			s += strlen(roman[i].c);
			break;
		}
	}
}
/*printf("parse: %d\n", ret);*/
dlzka = s - start;
/*printf("dlzka: %d\n", dlzka);*/
return ret;
}


void preved(int c)
{
	int i;
	if (c == 0)
	printf("0");
	while (c)
{
	for (i = 0; roman2[i].n != -1; i++)
	{
		if (c >= roman2[i].n) {
			printf("%s", roman2[i].c);
			c -= roman2[i].n;
			break;
		}
	}
}
	
}

int main(void)
{
	char line[20000];
	int reg[20];
	char *s;
	int i;
	int kam;

	while (fgets(line, sizeof(line), stdin) != NULL)
	{
	/*rintf("line: %s\n", line);*/
		line[strlen(line)-1] = '\0';
		if (!strcmp(line, "RESET"))
		{
			for (i = 0; i < 20; i++)
				reg[i] = -1;
			printf("Ready\n");
		} else if (!strcmp(line, "QUIT"))
		{
			printf("Bye\n");
			return 0;
		}
		else {
		int error = 0;
		int cislo = 0;
		int result = 0;
		char temp[1000];
		int f = 0;
			kam = atoi(line);
			s = line + 2;

			memset(temp, 0, sizeof(temp));

			f = 1;
			int op = 0;
			while (*s)
			{
				if (*s >= '0' && *s <= '9') {
					cislo = reg[*s-'0'];
			if (reg[*s-'0'] == -1)
			{
				printf("Error\n");
				error = 1;
				break;
			}
					/*printf("cislo %d\n", cislo);*/
					if (op == 0) { result = cislo; }
					else if (op == 1) 
					result += cislo;
					else if (op == 2) 
					result -= cislo;
					s++;
				}
				else if (*s == '+') {
					op = 1;
					s++;
				}
				else if (*s == '-') {
					op = 2;
					s++;
}
				else {
					cislo = parse(s);
					if (op == 0) { result = cislo; f = 0; }
					else if (op == 1) 
					result += cislo;
					else if (op == 2) 
					result -= cislo;
					s += dlzka;
					}	
			}
			if (error)
				continue;
			if (result < 0 || result > 10000) {
				printf("Error\n");
				continue;
			}
			/*printf("result: %d\n", result);*/
			printf("%d=", kam);
			preved(result);
			printf("\n");
			reg[kam] = result;
		}
	}
	return 0;
}