[Programmers, Level 0] Curse Number 3

Description

3x villagers don't use multiples of 3 and numbers 3 because they think 3 is a curse number. The number of 3x villagers is here according to the following.

Decimal Sys	3x viilagers	Deciaml System	3x viilagers
1	1	6	8
2	2	7	10
3	4	8	11
4	5	9	14
5	7	10	16

Given an integer n as a parameter, complete the solution function to return n by replacing it with the number used in the 3x village.

 

Restrictions

• 1 ≤ n ≤ 100

Example Input/Output

n	Results
15	25
40	76

#1 Input

• Converting 15 to a number in a 3x village is 25.

#2 Input

• If you convert 40 to a number in a 3x village, it's 76.

def solution(n):
    ans = 0
    for i in range(n):
        ans += 1
        while ans % 3 == 0 or '3' in str(ans):
            ans += 1
    return ans

Discussion

You can repeat for statement by n, and find a rule that requires +1 once more for numbers that contain 3 or are multiples of 3.

 

A two-dimensional list can be created by putting a list in the list, and each list inside is separated by a comma.

>>> a = [[10, 20], [30, 40], [50, 60]]
>>> a
[[10, 20], [30, 40], [50, 60]]

When accessing or assigning values to elements in a two-dimensional list, use the list followed by [ ] twice and specify a row index and a column index within [].

>>> a = [[10, 20], [30, 40], [50, 60]]
>>> a[0] [0]            # 세로 인덱스 0, 가로 인덱스 0인 요소 출력
10
>>> a[1][1]           # 세로 인덱스 1, 가로 인덱스 1인 요소 출력
40
>>> a[2][1]           # 세로 인덱스 2, 가로 인덱스 0인 요소 출력
60
>>> a[0][1] = 1000    # 세로 인덱스 0, 가로 인덱스 1인 요소에 값 할당
>>> a[0][1]
1000