mod = 1000000007
eps = 10**-9


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

    N, Q = map(int, input().split())
    for _ in range(Q):
        s, t = map(int, input().split())
        ans = 0
        while t != s:
            x = s & (-s)
            y = 1 << ((t-s).bit_length() - 1)
            assert min(x, y) > 0
            s += min(x, y)
            ans += 1
        print(ans)


if __name__ == '__main__':
    main()