๋ฌธ์
https://www.acmicpc.net/problem/14916
14916๋ฒ: ๊ฑฐ์ค๋ฆ๋
์ฒซ์งธ ์ค์ ๊ฑฐ์ค๋ฆ๋ ์ก์ n(1 ≤ n ≤ 100,000)์ด ์ฃผ์ด์ง๋ค.
www.acmicpc.net
ํ์ด
# ๋ฐฑ์ค 14916๋ฒ ๋ฌธ์ - ๊ฑฐ์ค๋ฆ๋
n = int(input())
ans = 0
while True:
if n % 5 == 0:
ans += n // 5
break
else:
n -= 2
ans += 1
if n < 0:
break
if n < 0:
print(-1)
else:
print(ans)
'๐๏ธ Algorithm > ๐ฉ ๋ฐฑ์ค' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
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