/n{dup 0 get 64 lt{1{2 copy exch length ge{exit}if 2 copy get 46 mod 11 gt{exit}if 1 add}loop 2 copy 1 index length 1 index sub getinterval 3 1 roll 0 exch getinterval dup(+)eq{pop(1)}if dup(-)eq{pop(-1)}if}{(1)}ifelse}def 42{false(%stdin)(r)file 99 string readline pop{dup()eq{exit}if n 1 index()eq{2 index not{(0)print}if exit}if{1 index 1 get 94 eq{cvx exec 1 index 2 1 index length 2 sub getinterval n cvx exec dup 3 index mul dup dup cvi eq{cvi}if dup 0 ge 6 index and{(+)=only}if dup 1 ne{dup -1 eq{(-)print}{=only[}ifelse}if pop(x)print 1 sub dup 1 ne{(^)print =only}{pop}ifelse true exch}{[[stop}ifelse}stopped{pop pop cvx exec dup 0 ge 3 index and{(+)print}if =only 1 1 index length 1 sub getinterval true exch}if}loop/ =}repeat