#include<iostream>
using namespace std;
int N,Q;
main()
{
	cin>>N>>Q;
	for(;Q--;)
	{
		long S,T;
		cin>>S>>T;
		int cnt=0;
		while(S<T)
		{
			long i=S&-S;
			if(i>0&&S+i<=T)S+=i,cnt++;
			else
			{
				cnt+=__builtin_popcountll(T-S);
				S=T;
			}
		}
		cout<<cnt<<endl;
	}
}