#include <stdio.h>

int reg[10], i, sign;
char z, c[100];

int conv(char *s, int len) {
	int ret = 0, i;
	if (s[0] == 'O') return ret;
	for (i = 0; i < len; i++) {
		switch (s[i]) {
			case 'I':
				if (i + 1 < len) {
					if (s[i + 1] == 'V') {i++; ret += 4;}
					else if (s[i + 1] == 'X') {i++; ret += 9;}
					else ret += 1;
				} else ret += 1;
			break;
			case 'V':
				ret += 5;
			break;
			case 'X':
				if (i + 1 < len) {
					if (s[i+1] == 'L') {i++; ret += 40;}
					else if (s[i+1] == 'C') {i++; ret+=90;}
					else ret += 10;
				} else ret += 10;
			break;
			case 'L':
				ret += 50;
			break;
			case 'C':
				if (i + 1 < len) {
					if (s[i+1] == 'D') {i++; ret += 400;}
					else if (s[i+1] == 'M') {i++; ret += 900;}
					else ret += 100;
				} else ret += 100;
			break;
			case 'D':
				ret += 500;
			break;
			case 'M':
				ret += 1000;
			break;
		}
	}
	return ret;
}

void conv2(int c) {
	if (c == 0) {
		printf("O");
		return;
	}
	while (c >= 1000) {
		putchar('M');
		c -= 1000;
	}
	if (c >= 900) { putchar('C'); putchar('M'); c -= 900;}
	if (c >= 500) { putchar('D'); c -= 500;}
	if (c >= 400) { putchar('C'); putchar('D'); c -= 400;}
	while (c >= 100) {
		putchar('C');
		c -= 100;
	}
	if (c >= 90) { putchar('X'); putchar('C'); c -= 90; }
	if (c >= 50) { putchar('L'); c -= 50; }
	if (c >= 40) { putchar('X'); putchar('L'); c -= 40; }
	while (c >= 10) {
		putchar('X');
		c -= 10;
	}
	if (c >= 9) { putchar('I'); putchar('X'); c -= 9; }
	if (c >= 5) { putchar('V'); c -= 5; }
	if (c >= 4) { putchar('I'); putchar('V'); c -= 4; }
	while (c >= 1) {
		putchar('I');
		c--;
	}
}

int main() {
	for (i = 0; i < 10; i++) reg[i] = -1;
	while (true) {
next:
		z = getchar();
		if (z == 'R') {
			while ((z = getchar()) != '\n');
			for (i = 0; i < 10; i++) reg[i] = -1;
			printf("Ready\n");
		} else if (z == 'Q') {
			printf("Bye\n");
			return 0;
		} else {
			int r = z - '0';
			z = getchar(); // =
			sign = 1;
			int vysl = 0;
			while (z != '\n') {
				z = getchar();
				if (z >= '0' && z <= '9') {
					if (reg[z-'0'] < 0 || reg[z-'0'] > 10000) {
						printf("Error\n");
						while ((z = getchar()) != '\n');
						goto next;
					} else vysl += sign * reg[z-'0'];
					z = getchar();
				} else {
					i = 0;
					while (z != '+' && z != '-' && z != '\n') {
						c[i++] = z;
						z = getchar();
					}
					vysl += sign * conv(c, i);
				}
				if (z == '+') sign = 1;
				if (z == '-') sign = -1;
			}
			if (vysl < 0 || vysl > 10000) {
				printf("Error\n");
			} else {
				reg[r] = vysl;
				printf("%d=", r);
				conv2(vysl);
				printf("\n");
			}
		}
	}
	return 0;
}