#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    ll n,q;
    cin>>n>>q;
    while(q--){
        ll s,t;
        cin>>s>>t;
        ll ans = 0;
        //cout<<(ll)(s&-s)<<endl;
        while(true){
            //cout<<(s+s&-s)<<endl;
            if(s+(s&-s)<=t){
                ans++;
                s += s&-s;
            }else{
                break;
            }
        }
        ll now = s & (-s);
        while(s<t){
            //cout<<s<<endl;
            if(now+s<=t){
                ans++;
                s += now;
            }else{
                now >>= 1;
            }
        }
        cout<<ans<<endl;
    }
    //cout<<ans<<endl;   

}