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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- class Program
- {
- static int number_of_same(long num_1, long num_2, long num_3) {
- if (num_1 == num_2 && num_1 == num_3)
- {
- return 3;
- }
- else if (num_1 == num_3 | num_2 == num_3 | num_1 == num_2)
- {
- return 2;
- }
- else
- {
- return 0;
- }
- }
- static void Main()
- {
- long num_1, num_2, num_3;
- string input_1, input_2, input_3;
- input_1 = Console.ReadLine();
- input_2 = Console.ReadLine();
- input_3 = Console.ReadLine();
- if (!long.TryParse(input_1, out num_1) | !long.TryParse(input_2, out num_2) | !long.TryParse(input_3, out num_3))
- {
- Console.WriteLine("wrong");
- }
- else {
- Console.WriteLine(number_of_same(num_1, num_2, num_3));
- }
- }
- }
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