enum{M=2047};N,A[M],B[M],h,k,i,x[M],t;main(z){for(scanf("%d",&N);i<N;)scanf("%d",A+i++);for(;~scanf("%d",B+--i););for(z=h=N;h--;z>k?z=k:0){for(i=N;i--;)x[i]=A[i]<<11;for(k=N;k--;x[t]+=B[(h+k)%N]/2<<11|1)for(i=N;i--;)x[t]>x[i]?t=i:0;for(i=N;i--;k<t?k=t:0)t=x[i]&M;}printf("%d",z);exit(0);}