n = int(input())
i = 1
sum = 0
while(i<n+1) :
sum = sum + i
i = i + 1
print(sum)
First of all u should always format your code properly before posting and give the problem link for which you are asking for help.
If it is what i think it is (sum of first n numbers) then there is a formula for it which gives answer in constant time
The formula is n*(n+1)/2
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