## https://yukicoder.me/problems/no/1742


def main():
    N, Q = map(int, input().split())
    st = []
    for _ in range(Q):
        s, t = map(int, input().split())
        st.append((s, t))

    for s, t in st:
        c = 0
        for _ in range(N + 1):
            if s & 1 > 0:
                s += 1
                c += 1
            s = s // 2
            
            if t & 1 > 0:
                t -= 1
                c += 1
            t = t // 2
            if s == t:
                break
        print(c)
            

            







            



if __name__ == "__main__":
    main()