1023/自测-4 Have Fun with Numbers (PTA)

Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 246913578, which happens to be another 9-digit number consisting exactly the numbers from 1 to 9, only in a different permutation. Check to see the result if we double it again!

Now you are suppose to check if there are more numbers with this property. That is, double a given number with k digits, you are to tell if the resulting number consists of only a permutation of the digits in the original number.

Input Specification:

Each input contains one test case. Each case contains one positive integer with no more than 20 digits.

Output Specification:

For each test case, first print in a line “Yes” if doubling the input number gives a number that consists of only a permutation of the digits in the original number, or “No” if not. Then in the next line, print the doubled number.

Sample Input:

1234567899

Sample Output:

Yes
2469135798

编译器:Python(python3)

N = int(input())
doubleN = N*2

str_N = str(N)
str_doubleN = str(doubleN)

Set_N = set(str_N)
Set_doubleN = set(str_doubleN)

if Set_N == Set_doubleN:
    print("Yes")
else:
    print("No")
    
print(doubleN) 

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