ll@N,@K,@A[N],@C[N],m;set<ll>B[N][N];rep(i,N)B[i][i].insert(C[i]);rep(l,1,N)rep(i,N){m=i+l;rep(j,i,m)for(auto c=B[i][j%N].begin(),e=B[i][j%N].end();c!=e;c++)for(auto d=B[(j+1)%N][m%N].begin(),f=B[(j+1)%N][m%N].end();d!=f;d++)if(abs(*c-*d)<=K)B[i][m%N].insert(*c),B[i][m%N].insert(*d);}wt(max[(i,j),0,N@!B[i][(i+j)%N].empty()](sum[k,i,i+j+1](A[k%N])));