// LeetCode 3516: Find Closest Person
// 難度: Easy
// 日期: 2025-09-04

using System;
using System.Collections.Generic;
using System.Linq;

public class Solution {
    public int FindClosest(int x, int y, int z)
    {
        var distanceX = Math.Abs(x - z);
        var distanceY = Math.Abs(y - z);

        return distanceX == distanceY ? 0 : distanceX > distanceY ? 2 : 1;
    }
}

// 測試程式
public class Program
{
    public static void Main()
    {
        TestCase1();
        TestCase2();
        TestCase3();
    }

    // 基本測試案例 - Example 1
    static void TestCase1()
    {
        var solution = new Solution();
        // Input: x = 2, y = 7, z = 4
        // Expected: 1 (Person 1 距離較近: |2-4| = 2 < |7-4| = 3)
        var actual = solution.FindClosest(2, 7, 4);
        var expected = 1;
        Console.WriteLine($"Test 1: Input(2, 7, 4) Expected: {expected}, Actual: {actual}, Result: {(actual == expected ? "PASS" : "FAIL")}");
    }

    // 基本測試案例 - Example 2
    static void TestCase2()
    {
        var solution = new Solution();
        // Input: x = 2, y = 5, z = 6
        // Expected: 2 (Person 2 距離較近: |5-6| = 1 < |2-6| = 4)
        var actual = solution.FindClosest(2, 5, 6);
        var expected = 2;
        Console.WriteLine($"Test 2: Input(2, 5, 6) Expected: {expected}, Actual: {actual}, Result: {(actual == expected ? "PASS" : "FAIL")}");
    }

    // 基本測試案例 - Example 3
    static void TestCase3() {
        var solution = new Solution();
        // Input: x = 1, y = 5, z = 3
        // Expected: 0 (距離相等: |1-3| = 2 = |5-3| = 2)
        var actual = solution.FindClosest(1, 5, 3);
        var expected = 0;
        Console.WriteLine($"Test 3: Input(1, 5, 3) Expected: {expected}, Actual: {actual}, Result: {(actual == expected ? "PASS" : "FAIL")}");
    }
}