Level 1.cs

using System;

namespace Advent_of_Code
{
    class Level_1_2
    {
        static void Main_1_2(string[] args)
        {
            //int[] numArray;

            int[] numArray = { 1918, 1869, 1821, 1852, 1981, 1987, 1989, 1597, 1634, 1537, 1991, 1603, 1543, 1949, 1879, 1800, 1761, 2010, 1810, 1458, 1755, 1938, 1500, 2005, 818, 1493, 1618, 1923, 1283, 1952, 1373, 1605, 1230, 1321, 1873, 1853, 1886, 1372, 1913, 1871, 159, 733, 1400, 1880, 1462, 2007, 1801, 1982, 1728, 1640, 1442, 1525, 1953, 1791, 1906, 1946, 1641, 2009, 1627, 1935, 1936, 1908, 1826, 1291, 1978, 1884, 1799, 1464, 1538, 1365, 1678, 1872, 1964, 1863, 1388, 1912, 1928, 1471, 1632, 1336, 1396, 1948, 1974, 1331, 1290, 1992, 1096, 1889, 1874, 1341, 757, 1351, 1876, 1674, 2002, 1504, 1865, 1469, 1792, 1920, 1925, 1898, 1899, 1435, 405, 1488, 1319, 1322, 1749, 1867, 1957, 1944, 1727, 1293, 1739, 1285, 1917, 1897, 1844, 1966, 1921, 1905, 1830, 1484, 1364, 1782, 1415, 1412, 1413, 833, 1857, 1370, 1890, 1393, 1262, 1311, 2008, 1545, 1896, 1362, 1862, 1617, 1864, 608, 1868, 1689, 1784, 1806, 1976, 1870, 1973, 1993, 1986, 1998, 1414, 1858, 1990, 1841, 1895, 1779, 1850, 2001, 1590, 1902, 1487, 943, 1808, 782, 1546, 2004, 1656, 154, 1661, 1688, 1731, 1466, 1927, 1438, 1387, 1576, 1793, 1797, 1979, 1903, 1638, 1940, 1911, 1301, 1669, 1409, 1578, 1887, 1860, 1619, 1939, 1625, 1941, 1374, 1766, 1407 };
            for (int i = 0; i < numArray.Length; i++)
            {
                for (int j = 0; j < numArray.Length; j++)
                {
                    for (int k = 0; k < numArray.Length; k++)
                    {
                        if (numArray[i] + numArray[j] + numArray[k] == 2020)
                        {
                            Console.WriteLine(numArray[i].ToString() + " " + numArray[j].ToString() + " " + numArray[k].ToString());
                            return;
                        }
                    }
                }
            }
        }
    }
}