CodeAdvent, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Day1Part2();

}
        
        private static void Day1Part1()
        {
            int[] input = new int[] {1934, 1702, 1571, 1737, 1977, 1531, 1428, 1695, 1794, 1101, 13, 1164, 1235, 1289, 1736, 1814, 1363, 1147, 1111, 1431, 1765, 1515, 1184, 1036, 1803, 1791, 1638, 1809, 1283, 1980, 1854, 1878, 1574, 1352, 1151, 730, 1581, 1990, 1919, 2003, 1538, 1663, 1735, 1772, 1830, 1152, 1022, 1774, 1544, 1551, 1835, 1383, 1614, 1396, 1715, 1530, 295, 1208, 1978, 1104, 1691, 1176, 1183, 1909, 1192, 1535, 1924, 1268, 1969, 1954, 1760, 1077, 1734, 1371, 1676, 1933, 1400, 1928, 1982, 1541, 1106, 1248, 1346, 1782, 1142, 1849, 1798, 1362, 1379, 1886, 1265, 1226, 1751, 1575, 1027, 1710, 1601, 1205, 1922, 1452, 1206, 1263, 2000, 1957, 1951, 1834, 1533, 1149, 1245, 1564, 1182, 1237, 1013, 1254, 1895, 1504, 1480, 1556, 1821, 1589, 1864, 1573, 1698, 1927, 1434, 516, 1722, 1360, 1940, 1212, 1329, 1675, 1812, 1917, 1302, 1604, 1336, 1233, 1405, 1179, 1169, 1081, 1941, 1553, 1236, 1824, 1923, 1938, 1475, 1446, 1545, 1853, 1664, 317, 1489, 1884, 1743, 1621, 1128, 1474, 1505, 394, 1387, 1509, 1627, 1914, 1913, 1949, 1843, 1847, 1882, 1486, 1082, 1802, 1645, 1690, 1629, 1377, 2004, 1044, 1191, 1014, 1857, 1813, 1572, 1055, 1002, 1721, 1273, 1417, 1968, 1888, 1863, 1278, 1141, 1964, 1259, 1823, 1181, 1779};
            int countera = 0;
            int counterb = 0;
            foreach(int a in input)
            {
                foreach(int b in input)
                {
                    if(countera==counterb){counterb++;continue;}
                    if(a+b==2020)
                    {
                        Console.WriteLine(a + " * " + b + " = " + a*b);
                        return;
                    }
                    counterb++;
                }
                countera++;
            }            
        }
        
        private static void Day1Part2()
        {
            int[] input = new int[] {1934, 1702, 1571, 1737, 1977, 1531, 1428, 1695, 1794, 1101, 13, 1164, 1235, 1289, 1736, 1814, 1363, 1147, 1111, 1431, 1765, 1515, 1184, 1036, 1803, 1791, 1638, 1809, 1283, 1980, 1854, 1878, 1574, 1352, 1151, 730, 1581, 1990, 1919, 2003, 1538, 1663, 1735, 1772, 1830, 1152, 1022, 1774, 1544, 1551, 1835, 1383, 1614, 1396, 1715, 1530, 295, 1208, 1978, 1104, 1691, 1176, 1183, 1909, 1192, 1535, 1924, 1268, 1969, 1954, 1760, 1077, 1734, 1371, 1676, 1933, 1400, 1928, 1982, 1541, 1106, 1248, 1346, 1782, 1142, 1849, 1798, 1362, 1379, 1886, 1265, 1226, 1751, 1575, 1027, 1710, 1601, 1205, 1922, 1452, 1206, 1263, 2000, 1957, 1951, 1834, 1533, 1149, 1245, 1564, 1182, 1237, 1013, 1254, 1895, 1504, 1480, 1556, 1821, 1589, 1864, 1573, 1698, 1927, 1434, 516, 1722, 1360, 1940, 1212, 1329, 1675, 1812, 1917, 1302, 1604, 1336, 1233, 1405, 1179, 1169, 1081, 1941, 1553, 1236, 1824, 1923, 1938, 1475, 1446, 1545, 1853, 1664, 317, 1489, 1884, 1743, 1621, 1128, 1474, 1505, 394, 1387, 1509, 1627, 1914, 1913, 1949, 1843, 1847, 1882, 1486, 1082, 1802, 1645, 1690, 1629, 1377, 2004, 1044, 1191, 1014, 1857, 1813, 1572, 1055, 1002, 1721, 1273, 1417, 1968, 1888, 1863, 1278, 1141, 1964, 1259, 1823, 1181, 1779};
            int countera = 0;
            int counterb = 0;
            int counterc = 0;
            foreach(int a in input)
            {
                foreach(int b in input)
                {
                    foreach(int c in input)
                    {
                    if(countera==counterb||counterb==counterc||countera==counterc){counterc++;continue;}
                    if(a+b+c==2020)
                    {
                        Console.WriteLine(a + " * " + b + " * " + c + " = " + a*b*c);
                        return;
                    } 
                    counterc++;
                    }

counterb++;
                }
                countera++;
            }            
        }        
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,22 sec, absolute running time: 0,11 sec, cpu time: 0,11 sec, average memory usage: 14 Mb, average nr of threads: 3, absolute service time: 0,33 sec