#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001


int main(){
	
	int n,q;
	cin>>n>>q;
	
	rep(_,q){
		long long s,t;
		cin>>s>>t;
		int ans = 0;
		while(s!=t){
			int ind = -1;
			rep(i,n){
				if((s>>i)&1){
					ind = i;
					break;
				}
			}
			if(ind==-1 || (s+(1LL<<ind))>t){
				ans += __builtin_popcountll(s^t);
				break;
			}
			ans++;
			s += 1LL<<ind;
		}
		cout<<ans<<endl;
		
	}
	
	return 0;
}