80 - (19 + 1) > 540 + 30 - 20 < 580 - (19 + 1) = 570 + (5 + 5) > 850 + (80 - 40) = 970 - (50 + 20) = 50 + (80 - 40) = 990 - (60 + 30) = 10
80 - (19 + 1) > 5
40 + 30 - 20 < 5
80 - (19 + 1) = 5
70 + (5 + 5) > 8
50 + (80 - 40) = 9
70 - (50 + 20) =
50 + (80 - 40) = 9
90 - (60 + 30) = 10