https://www.acmicpc.net/problem/2839
๊ทธ๋ฆฌ๋ ์๊ณ ๋ฆฌ์ฆ์ ํตํ ๋ฌธ์ ํด๊ฒฐ
# ๋ฐฑ์ค 2839๋ฒ ๋ฌธ์ - ์คํ๋ฐฐ๋ฌ
sugar = int(input())
bag = 0
while sugar >= 0:
if sugar % 5 == 0: # 5์ ๋ฐฐ์์ด๋ฉด
bag += (sugar // 5) # 5๋ก ๋๋ ๋ชซ์ ๊ตฌํด์ผ ์ ์๊ฐ ๋จ
print(bag)
break
sugar -= 3
bag += 1 # 5์ ๋ฐฐ์๊ฐ ๋ ๋๊น์ง ์คํ-3, ๋ด์ง+1
else:
print(-1)
'๐๏ธ Algorithm > ๐ฉ ๋ฐฑ์ค' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
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