mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N, Q = map(int, input().split())
    for _ in range(Q):
        s, t = map(int, input().split())
        ans = 0
        while t != s:
            s_new = s
            for lv in range(61):
                p = 1 << lv
                if s % p == 0:
                    if s + p <= t:
                        s_new = s + p
                else:
                    break
            assert s != s_new
            s = s_new
            ans += 1
        print(ans)


if __name__ == '__main__':
    main()