int main() {
	int N;
	scanf("%d", &N);
	while (N--) {
		int a, b;
		scanf("%d%d", &a, &b);
		if (a == b) {
			puts("=");
		} else {
			int diff = a - b;
			if (diff & 0x80000000) {
				printf("%c\n", 0x3c);
			} else {
				printf("%c\n", 0x3e);
			}
		}
	}
	return 0;
}