#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll=long long;
using Graph=vector<vector<pair<int,ll>>>;
#define INF 1000000000
#define MOD 998244353
#define MAX 300000

int main(){
  int N,Q;
  cin>>N>>Q;
  for(int q=0;q<Q;q++){
    ll S,T;
    cin>>S>>T;
    int ans=0;
    if(S+1==T){
      cout<<1<<'\n';
      continue;
    }
    ll left=0;
    ll right=1LL<<N;
    while(true){
      ll x=(left+right)/2;
      if(x<S){
        left=x;
      }else if(T<x){
        right=x;
      }else{
        break;
      }
    }
    ll x=(left+right)/2;
    ll y1=x-S;
    ll y2=T-x;
    while(y1>0){
      if(y1%2==1){
        ans++;
      }
      y1/=2;
    }
    while(y2>0){
      if(y2%2==1){
        ans++;
      }
      y2/=2;
    }
    cout<<ans<<'\n';
  }
}