Problems from Cybernauts NPC 2018

These problems are from a contest hosted on March 24, 2018 at 4:45 AM UTC. See details...

Standings
A. Amicable Numbers
From Wikipedia: “Amicable numbers are two different numbers so related that the sum of the proper di...
B. Light The Candle
You have N candles of different lengths. For a candle of length L, you can light it for L minutes. N...
C. Bikpik Colony
Bikpiks are very small aliens. Day by day they are becoming very dangerous for human being. They liv...
D. Problematic Problem Setters
A new national level contest will be held next month. So chief judge asked some problem setters to s...
E. Secret Sorting Order
You will be given a list of words which were sorted based on some unknown ordering among the letters...
F. Be Efficient!!
Little Anita was again thinking about a problem! Recently she was thinking about installing some foo...
mehdi_ Moderate 8/17/113
G. Alice Loves to Play Games
Alice loves to play game. Recently, she downloaded a new game from google play store. In this game, ...
H. Just Primes II (Hard)
Given a positive integer N, calculate the minimum number of distinct primes required such that their...
I. Water Project of Black Iceland
Black Iceland is one of the largest populated city in this world. Due to pollution and scarcity of p...
J. Just Primes II (Easy)
Given a positive integer N, calculate the minimum number of distinct primes required such that their...
K. War of Kingdoms
There is a country named WARLAND. It is a big country, so it is divided into N kingdoms. Each kingdo...
L. Biswa and Red-Black Ants
Biswa has come to Antland for a trip. There are N holes in total in Antland. He can start visiting f...
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