"""

"""

import sys
from sys import stdin

def solve(a,b,l,r):
    
    if r <= a or b <= l:
        return 0

    if a <= l and r <= b:
        #print (l,r)
        return 1
    else:
        c1 = solve(a,b,l,(l+r)//2)
        c2 = solve(a,b,(l+r)//2,r)
        return c1 + c2

N,Q = map(int,stdin.readline().split())

ANS = []
for i in range(Q):

    S,T = map(int,stdin.readline().split())
    #T -= 1

    ANS.append( solve(S,T,0,2**N) )

print ("\n".join(map(str,ANS)))