Codemaster

Codeforces A B C D done ✅✅

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Leetcode A B C D done ✅✅

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CF C done ✅✅

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CF B done ✅✅

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CF A done ✅✅

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Div 2 D done ✅✅

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Div 2 A B C Done ✅✅

Get min time done ✅✅

Here are the answers with the links removed: 1. F 2. Replying on UDP to reduce packets transmission 3. O(1) for push, O(n) for pop 4. There is no Gateway configured in the device 5. Optical fiber 6. Ping the workstation's own IP address, then the default gateway, then a remote IP, finally an external IP address like that of a well-known public website 7. 25 8. GNU GRUB 9. DoT 10. 12.08 11. (2^n - 1) 12. 3 13. [ p = 4 * p = 1 ] 14. QoS 15. Poly silicon gate patterning 16. AB 17. Swap a and b 18. 1.414

C++ solution available