1 array 1 1
2 array 1 1
3 var 1
4 var 1
5 var 1
6 acond 1 1 3 1 2
7 acond 1 1 4 2 1
8 read 1 6 5
9 read 1 7 5
10 eq 1 1 2
11 eq 1 8 9
12 and 1 10 -11
13 root 1 12