#include <bits/stdc++.h>
using namespace std;
int solve(int s, int t, int l, int r){
    if (t <= l || r <= s) return 0;
    else if (s <= l && r <= t) return 1;
    else{
        long long m = (l + r) / 2;
        int x = solve(s, t, l, m);
        int y = solve(s, t, m, r);
        return x + y;
    }
}
int main(void){
    int n, q;
    cin >> n >> q;
    int maxi = 1<<n;
    long long s, t;
    for(int i = 0; i < q; i++){
        cin >> s >> t;
        cout << solve(s, t, 0, maxi) << endl;
    }
    
    return 0;
}