题解 | 买橘子
买橘子
https://www.nowcoder.com/practice/73e0552b78474a9086781e47f4e01d73
import sys
a = int(input())
if a % 8 == 0:
print(a // 8)
elif a % 8 == 6:
print(a // 8 + 1)
elif a % 8 == 2 and a >= 18:
print(a // 8 + 1)
elif a % 8 == 4 and a >= 12:
print(a // 8 + 1)
else:
print(-1)
