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