Znajdź brakujący numer w tablicy w Pythonie
def get_missing_summatin(a):
n = a[-1]
total = n*(n+1)//2
summation = 0
summation = sum(a)
result = total-summation
print(result)
a = [1,2,3,5,6,7]
get_missing_summatin(a)
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