n = gets.to_i ans = [] (1<<n).times do v = gets.split.map(&:to_i) r = v[n] if r == 0 next end tmp = [] 1.upto(n) do |i| q = v[i-1] if q == 0 tmp.push("¬P_"+i.to_s) else tmp.push("P_"+i.to_s) end end tmp = "(" + tmp.join('∧') + ")" ans.push(tmp) end if ans.size == 0 puts "A=⊥" elsif ans.size == (1 << n) puts "A=⊤" else puts "A=" + ans.join('∨') end