merge 8 0 1
merge 44 0 1
merge 23 2 5
merge 59 2 5
merge 29 3 7
merge 65 3 7
merge 0 8 1
merge 36 8 37
merge 28 10 13
merge 64 10 13
merge 27 16 18
merge 63 16 18
merge 32 17 20
merge 68 17 20
merge 26 21 22
merge 62 21 22
merge 2 23 5
merge 38 23 41
merge 21 26 22
merge 57 26 58
merge 16 27 18
merge 52 27 54
merge 10 28 13
merge 46 28 49
merge 3 29 7
merge 39 29 43
merge 17 32 20
merge 53 32 56
merge 35 33 34
merge 71 33 34
merge 33 35 34
merge 69 35 70