1<?xml version="1.0" encoding="UTF-8"?> 2<out><set>Positive numbers: 31,12,123,1234,12345,123456,1234567,12345678,123456789,1234567890</set><set> 412345678901,123456789012,1234567890123,12345678901234,123456789012345</set><set> 51234567890123456,12345678901234568,123456789012345680</set><set> 6Negative numbers: 7-1,-12,-123,-1234,-12345,-123456,-1234567,-12345678,-123456789,-1234567890</set><set> 8-12345678901,-123456789012,-1234567890123,-12345678901234,-123456789012345</set><set> 9-1234567890123456,-12345678901234568,-123456789012345680</set></out>