mod = 998244353
inf = 2 * 10 ** 9 + 1


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

    N = int(input())
    UV = []
    for _ in range(N):
        x, y = map(int, input().split())
        UV.append((x + y, x - y))

    u_min = inf
    u_max = -inf
    v_min = inf
    v_max = -inf
    for u, v in UV:
        u_min = min(u_min, u)
        u_max = max(u_max, u)
        v_min = min(v_min, v)
        v_max = max(v_max, v)

    ok = inf
    ng = -1
    mid = (ok + ng) // 2
    while ok - ng > 1:
        u0_min = u_min
        u0_max = u_min + mid * 2
        v0_min = v_min
        v0_max = v_min + mid * 2
        u1_min = u_max - mid * 2
        u1_max = u_max
        v1_min = v_max - mid * 2
        v1_max = v_max
        flg = 1
        for u, v in UV:
            tmp = 0
            if u0_min <= u <= u0_max and v0_min <= v <= v0_max:
                tmp = 1
            if u1_min <= u <= u1_max and v1_min <= v <= v1_max:
                tmp = 1
            if tmp == 0:
                flg = 0
                break
        if flg:
            ok = mid
            mid = (ok + ng) // 2
            continue

        u0_min = u_min
        u0_max = u_min + mid * 2
        v0_min = v_max - mid * 2
        v0_max = v_max
        u1_min = u_max - mid * 2
        u1_max = u_max
        v1_min = v_min
        v1_max = v_min + mid * 2
        flg = 1
        for u, v in UV:
            tmp = 0
            if u0_min <= u <= u0_max and v0_min <= v <= v0_max:
                tmp = 1
            if u1_min <= u <= u1_max and v1_min <= v <= v1_max:
                tmp = 1
            if tmp == 0:
                flg = 0
                break
        if flg:
            ok = mid
        else:
            ng = mid
        mid = (ok + ng) // 2
    print(ok)


if __name__ == '__main__':
    main()