inp 2
iv 1 3
iv 2 4
mu 4 3 5
mu 3 5 6
mu 2 3 7
pwr 2 7 8
mu 6 8 9
mu 3 4 10
mu 4 10 11
pwr 2 10 12
mu 11 12 13
mu 9 13 14
mu 2 1 15
mu 1 15 16
pwr 2 15 17
mu 16 17 18
mu 1 4 19
mu 2 19 20
mu 1 2 21
mu 19 21 22
mu 20 22 23
mu 18 23 24
mu 14 24 25
pwr 2 25 26
oup 1 26
