import std;
void main(){
	auto n=readln.chomp.to!(long);
	long j=cast(long)log2(n);
	long m=n;
	for(;j>0;j--){
		long i=cast(long)(n^^(1.0/j));
		long k=n-(i^^j);
		stderr.writefln("%d %d %d",i,j,k);
		m=min(i+j+k,m);
	}
	writeln(m);
}