[Init] Solved solutions

cs/492A.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace _492A
+{
+	class Program
+	{
+		static void Main(string[] args)
+		{
+			int n = int.Parse(Console.ReadLine());
+			int a = 0, b = 0, c = 0;
+			while (n > c)
+			{
+				a++;
+				b = a * (a + 1) / 2;
+				c += b;
+			}
+			Console.WriteLine(c > n ? a - 1 : a);
+		}
+	}
+}