inp 2
mu 2 1 3
mu 1 3 4
mu 2 4 5
mu 3 4 6
mu 4 6 7
mu 5 7 8
mu 6 7 9
mu 3 9 10
mu 8 10 11
mu 9 10 12
mu 10 12 13
mu 11 7 14
mu 12 7 15
mu 13 15 16
mu 14 16 17
pwr 29 17 18
oup 1 18
