#482273 (C#(csc)) No.1053 ゲーミング棒

• 問題: No.1053 ゲーミング棒
• ユーザー: fairy_lettuce
• 提出日時: 2020-05-15 22:44:55
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 68 ms / 2,000 ms
• コード長: 2,050 bytes
• コンパイル時間: 3,884 ms
• コンパイル使用メモリ: 114,928 KB
• 実行使用メモリ: 28,416 KB
• 最終ジャッジ日時: 2024-09-19 11:57:04
• 合計ジャッジ時間: 6,332 ms
• ジャッジサーバーID （参考情報）: judge1 / judge2

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	30 ms; 18,944 KB
testcase_01	AC	29 ms; 18,560 KB
testcase_02	AC	29 ms; 18,688 KB
testcase_03	AC	30 ms; 18,816 KB
testcase_04	AC	30 ms; 19,072 KB
testcase_05	AC	29 ms; 18,560 KB
testcase_06	AC	29 ms; 18,944 KB
testcase_07	AC	30 ms; 18,944 KB
testcase_08	AC	30 ms; 18,944 KB
testcase_09	AC	30 ms; 18,944 KB
testcase_10	AC	29 ms; 18,816 KB
testcase_11	AC	31 ms; 19,072 KB
testcase_12	AC	30 ms; 18,944 KB
testcase_13	AC	29 ms; 18,432 KB
testcase_14	AC	29 ms; 18,816 KB
testcase_15	AC	29 ms; 18,560 KB
testcase_16	AC	29 ms; 18,688 KB
testcase_17	AC	30 ms; 18,688 KB
testcase_18	AC	29 ms; 18,816 KB
testcase_19	AC	29 ms; 18,816 KB
testcase_20	AC	29 ms; 18,560 KB
testcase_21	AC	28 ms; 18,688 KB
testcase_22	AC	30 ms; 18,816 KB
testcase_23	AC	66 ms; 28,416 KB
testcase_24	AC	66 ms; 28,416 KB
testcase_25	AC	66 ms; 28,160 KB
testcase_26	AC	68 ms; 28,416 KB
testcase_27	AC	29 ms; 18,432 KB
testcase_28	AC	30 ms; 18,432 KB
testcase_29	AC	30 ms; 18,816 KB
testcase_30	AC	59 ms; 24,960 KB
testcase_31	AC	59 ms; 25,088 KB
testcase_32	AC	59 ms; 24,704 KB
testcase_33	AC	58 ms; 24,704 KB
testcase_34	AC	58 ms; 24,704 KB
testcase_35	AC	61 ms; 26,112 KB
testcase_36	AC	61 ms; 25,984 KB

コンパイルメッセージ

Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AtCoder.Contest.B
{
	class Program
	{
		public static void Main(string[] args)
		{
			var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
			Console.SetOut(sw);

			Scanner cin = new Scanner();

			int n = cin.nextInt();
			var a = cin.ArrayInt(n);
			var b = new List<int>();
			var c = new List<int>();
			for (int i = 0; i < n; i++) c.Add(0);
			int now = 0;
			foreach (var e in a)
			{
				if (now != e)
				{
					b.Add(e);
					c[e - 1]++;
				}
				now = e;
			}

			int cc = c.Count(x => (x >= 2));

			// c[b.First() - 1]--;

			if (cc == 0) Console.WriteLine(0);
			else if (cc == 1 && b.First() == b.Last() && c[b.First() - 1] == 2) Console.WriteLine(1);
			else Console.WriteLine(-1);

			Console.Out.Flush();
		}
	}

	class Scanner
	{
		string[] s;
		int i;

		char[] cs = new char[] { ' ' };

		public Scanner()
		{
			s = new string[0];
			i = 0;
		}

		public string next()
		{
			if (i < s.Length) return s[i++];
			string st = Console.ReadLine();
			while (st == "") st = Console.ReadLine();
			s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
			if (s.Length == 0) return next();
			i = 0;
			return s[i++];
		}

		public int nextInt()
		{
			return int.Parse(next());
		}

		public int[] ArrayInt(int N, int add = 0)
		{
			int[] Array = new int[N];
			for (int i = 0; i < N; i++)
			{
				Array[i] = nextInt() + add;
			}
			return Array;
		}

		public long nextLong()
		{
			return long.Parse(next());
		}

		public long[] ArrayLong(int N, long add = 0)
		{
			long[] Array = new long[N];
			for (int i = 0; i < N; i++)
			{
				Array[i] = nextLong() + add;
			}
			return Array;
		}

		public double nextDouble()
		{
			return double.Parse(next());
		}

		public double[] ArrayDouble(int N, double add = 0)
		{
			double[] Array = new double[N];
			for (int i = 0; i < N; i++)
			{
				Array[i] = nextDouble() + add;
			}
			return Array;
		}
	}
}