def solution(n, arr):
i = 0
total = 0
while True:
total += arr[i]
if total >= n:
return i + 1
i = (i + 1) % len(arr)
n = 20
arr = [3,1,2,4,5]
ret = solution(n, arr)
print("solution 함수의 반환 값은", ret, "입니다.")
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