ll@N,@A[N],c=0;string S(N,87),T=S;rep(s,5d3){ll a=0,b=0;rep(i,N){if((A[i]|s)==s)a|=A[i],S[i]=87;else if(!(A[i]&s))b|=A[i],S[i]=66;else a=0,break;}if(c<a*b)c=a*b,T=S;}wtLn(c,T);