奇安信笔试（含代码）

while 1:
    a = int(input())
    list1 = [[1, 5], [2, 3], [2, 3], [2, 2], [5, 4], [3, 1]]
    count = 0
    sum = 0
    jilu = []
    while a > 0 and list1:
        count = 0
        for i in range(len(list1)):
            if a >= list1[i][0] and i not in jilu:
                a -= list1[i][0]
                sum += list1[i][1]
                count += 1
                jilu.append(i)
        if count == 0:
            break
    print(sum)

class Lb:
    class Node:
        def __init__(self,item):
            self.value=item
            self.next=None
    def __init__(self):
        self.head=self.Node(None)
        self.tail=self.Node(None)
        self.head.next=self.tail
        self.tail.next=self.head
        self.total=[]
    def add(self,item):
        node1=self.Node(item)
        node1.next=self.head.next
        self.head.next=node1
    def sump(self):
        count=0
        sum2=0
        while self.head.value==None:
            self.head=self.head.next
        sum2 += self.head.value
        self.head=self.head.next
        while count<3:
            if self.head.value!=None and self.head.value not in self.total and count<=1:
                self.total.append(self.head.value)
                sum2+=self.head.value
                count+=1
                self.head=self.head.next
            elif  self.head.value!=None and self.head.value not in self.total and count==2:
                self.total.append(self.head.value)
                sum2 += self.head.value
                count += 1
            elif self.head.value==None:
                self.head = self.head.next
            elif self.head.value!=None and self.head.value  in self.total:
                sum2 += self.head.value
                break
        return sum2
a=list(map(int,input().split(',')))
lb1=Lb()
for i in a[::-1]:
    lb1.add(i)
sum1=lb1.sump()
sum2=lb1.sump()
sum3=lb1.sump()
if sum1==sum2 and sum2==sum3:
    print("yes")
else:
    print("no")