def solve(S,T,l,r):
    if T<=l or r<=S:
        return 0
    elif S<=l and r<=T:
        return 1
    else:
        m=(l+r)>>1
        x=solve(S,T,l,m)
        y=solve(S,T,m,r)
        return x+y


N,Q=map(int,input().split())

Max=1<<N
Ans=[0]*Q
for quest in range(Q):
    S,T=map(int,input().split())
    print(solve(S, T, 0, Max))