解题思路:
注意事项:
参考代码:
def crossing_river(list):
time = 0
while 1:
if len(list) < 4:
break
#time_1 = max(list) + min(list) # time_1 法一 min摆渡
#time_2 = max(list) + min(list) # time_2 法二
time += max(list) + min(list)
list.remove(max(list))
temp_1 = max(list) + min(list)
list.remove(max(list))
list.sort() # 升序
temp_2 = 2 * list[1]
time += (temp_1 if temp_1 < temp_2 else temp_2)
if len(list) == 1:
time += list[0]
elif len(list) == 2:
time += max(list)
elif len(list) == 3:
time += list[0] + list[1] + list[2]
print(time)
t = int(input())
for _ in range(t):
n = int(input())
list = [int(i) for i in input().split()]
crossing_river(list)
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