2025. N줄덧셈

문제 링크

https://swexpertacademy.com/main/code/problem/problemDetail.do?problemLevel=1&contestProbId=AV5QFZtaAscDFAUq&categoryId=AV5QFZtaAscDFAUq&categoryType=CODE&problemTitle=&orderBy=INQUERY_COUNT&selectCodeLang=PYTHON&select-1=1&pageSize=10&pageIndex=2

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문제 풀이

n = int(input())
answer = 0
for i in range(n+1):
	answer += i

print(answer)