Python经典编程习题100例：第69例：约瑟夫问题

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n=int(input())
num=[]
for i in range(n):
    num.append(i+1)
i=0
k=0
m=0
while m<n-1:
    if num[i]!=0:
        k+=1
    if k==3:
        num[i]=0
        k=0
        m+=1
    i+=1
    if i==n:
        i=0
i=0
while num[i]==0:
    i+=1
print(num[i])