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- using System;
- namespace _12.MasterNumber
- {
- class Program
- {
- static void Main()
- {
- long endNumber = long.Parse(Console.ReadLine());
- for (long number = 1; number <= endNumber; number++)
- {
- bool isSumDivisibleBySeven = IsSumDivisibleBySeven(number);
- bool isSymmetric = IsSymmetric(number);
- bool isAtLeastOneDigitEven = IsAtLeastOneEvenDigit(number);
- if (isSumDivisibleBySeven && isSymmetric && isAtLeastOneDigitEven)
- {
- Console.WriteLine(number);
- }
- }
- }
- static bool IsSumDivisibleBySeven(long number)
- {
- int sum = 0;
- while (number > 0)
- {
- long digit = 0;
- digit = number % 10;
- number = number / 10;
- sum += (int)digit;
- }
- if (sum % 7 == 0)
- {
- return true;
- }
- return false;
- }
- static bool IsSymmetric(long number)
- {
- long normalNumber = number;
- long reverse = 0;
- while (normalNumber > 0)
- {
- long digit = normalNumber % 10;
- reverse = reverse * 10 + digit;
- normalNumber = normalNumber / 10;
- }
- if (reverse == number)
- {
- return true;
- }
- return false;
- }
- static bool IsAtLeastOneEvenDigit(long number)
- {
- while (number > 0)
- {
- long digit = 0;
- digit = number % 10;
- number = number / 10;
- if (digit % 2 == 0)
- {
- return true;
- }
- }
- return false;
- }
- }
- }
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