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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Beautiful Days at the Movies
  5. Discussions

Beautiful Days at the Movies

  • tongyou1995
     + 0 comments

    My initial idea was to use str to convert to a string and reverse using indexing and convert back:

    import os
def beautifulDays(i, j, k):
    num_beautiful_days = 0
    for num in range(i, j+1):
        num_reverse = int(str(num)[::-1])
        if abs(num-num_reverse) % k == 0:
            num_beautiful_days += 1
    return num_beautiful_days

if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    first_multiple_input = input().rstrip().split()
    i = int(first_multiple_input[0])
    j = int(first_multiple_input[1])
    k = int(first_multiple_input[2])
    result = beautifulDays(i, j, k)

    fptr.write(str(result) + '\n')
    fptr.close()