E={} A=$<.map{|s|*f,c=s.split.map &:to_i;E[f.rotate]=E[f]=c} (T=*0..M=A.shift-1).product(T,T){|k,i,j|E[x=[i,j]]=[E[x]||=9e9,E[[k,i]]+E[[k,j]]].min} p [*1...M].permutation(2).map{|i,j|A[i]+A[j]+E[[0,i]]+E[[i,j]]+E[[j,M]]}.min