CodeRankGPT -
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This Python program is designed to solve a problem where there is a list of room numbers, and all room numbers are repeated 'k' times except for one. The task is to identify the unique room number, which is the captain's room.
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The solution works by first creating a set from the list of room numbers, which removes any duplicates. It then calculates the sum of the list and the sum of the set multiplied by 'k'. The difference between these two sums is calculated, and this difference is used to identify the unique room number. The program iterates over the set of room numbers, and when it finds a number that, when multiplied by 'k-1', equals the difference, it prints that number and breaks the loop. This number is the captain's room number.
k = int(input())
room_number_list = list(map(int, input().split()))
room_number_set = set(room_number_list)
room_number_list_sum = sum(room_number_list)
room_number_set_sum = sum(room_number_set) * k
diff = room_number_set_sum - room_number_list_sum
for i in room_number_set:
if diff == ((k - 1) * i):
print(i)
break
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