Log for 電訊台

class Solution:
    def threeSum(self, nums: List[int]) -> List[List[int]]:
        if len(nums) == 1 or len(nums) == 2:
            return []
        
        res = []
        sol_set = set()
        two_sums = dict()
        N = len(nums)
        
        for i in range(N):
            for j in range(i+1, N):
                two_sums[(i,j)] = nums[i] + nums[j]
                
        for i in range(N):
            for k,v in two_sums.items():
                if i in k:
                    continue
                if -nums[i] == v:
                    sol = sorted([i,k[0],k[1]])
                    sol = sorted([ nums[sol[0]], nums[sol[1]], nums[sol[2]] ])
                    sol_set.add((sol[0], sol[1], sol[2]))
        
        return list(sol_set)

Dear Students 
 
The existing carrier based secure VPN service for Mainland-based students to access to LEARN @PolyU platform will end in February 2021.  Based on the feedback from Mainland-based students, user experiences are not consistent across locations with different Internet service carriers. 
 
Effective from 4 January 2021, a new VPN service “Cloud Express” will be available to all Mainland-based students.  “Cloud Express” will have two Data Centers (Beijing and Shenzhen) which allow PolyU students to establish the VPN connection. Both Data Centers have direct connections to all three telecom carriers in Mainland (China Mobile, China Telecom and China Unicom).  “Cloud Express“ provides a higher-resilience multiple-entry secure VPN service for students in Mainland irrespective of the telecom carriers of local Internet service providers subscribed by students. 

C:\Users\Steve>ping 47.107.225.255

Pinging 47.107.225.255 with 32 bytes of data:
Reply from 47.107.225.255: bytes=32 time=145ms TTL=83
Reply from 47.107.225.255: bytes=32 time=164ms TTL=83
Reply from 47.107.225.255: bytes=32 time=187ms TTL=83
Reply from 47.107.225.255: bytes=32 time=157ms TTL=83