[Init] Solved solutions

cs/448B.cs

@@ -0,0 +1,54 @@
+using System;
+
+namespace _448B
+{
+	class Program
+	{
+		static void Main(string[] args)
+		{
+			string s1 = Console.ReadLine();
+			string s2 = Console.ReadLine();
+			char[] c1 = s1.ToCharArray();
+			char[] c2 = s2.ToCharArray();
+			Array.Sort(c1);
+			Array.Sort(c2);
+			if (Cnt(s1, s2) == s2.Length)
+			{
+				Console.WriteLine("automaton");
+			}
+			else if (new string(c1) == new string(c2))
+			{
+				Console.WriteLine("array");
+			}
+			else if (Cnt(new string(c1), new string(c2)) == s2.Length)
+			{
+				Console.WriteLine("both");
+			}
+			else
+			{
+				Console.WriteLine("need tree");
+			}
+		}
+		static int Cnt(string s1, string s2)
+		{
+			int id = 0, cnt = 0;
+			for (int i = 0; i < s2.Length; i++)
+			{
+				for (int j = id; j < s1.Length; j++)
+				{
+					if (s1[j] == s2[i])
+					{
+						id = j + 1;
+						cnt++;
+						break;
+					}
+				}
+				if (cnt == s2.Length)
+				{
+					break;
+				}
+			}
+			return cnt;
+		}
+	}
+}