Submission #3601822
Source Code Expand
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; using System.Numerics; #if DEBUG using Microsoft.VisualStudio.TestTools.UnitTesting; #endif namespace competitive_programming { public class Program { static void Main(string[] args) { #if DEBUG var scanner = new IO.StreamScanner(File.Open("input.txt", FileMode.Open)); #else var scanner = new IO.StreamScanner(Console.OpenStandardInput()); #endif var s = scanner.ScanLine(); IO.Printer.Out.WriteLine(GetAns(s) ? "YES" : "NO"); IO.Printer.Out.Flush(); } static bool GetAns(string s) { s = new string(s.Reverse().ToArray()); var words = new string[] { "dream", "dreamer", "erase", "eraser" }; words = words.Select(w => new string(w.Reverse().ToArray())).ToArray(); var i = 0; while (i < s.Length) { var any = false; foreach(var w in words) { var match = true; for (int j = 0; j < w.Length; j++) { if(i + j >= s.Length || s[i + j] != w[j]) { match = false; break; } } if (match) { i = i + w.Length; any = true; break; } } if (!any) return false; } return true; } } #if DEBUG [TestClass] public class TestClass { [TestMethod] public void Test() { } } #endif } #region INOUT namespace IO { using System.IO; using System.Text; using System.Globalization; public class Printer : StreamWriter { static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; } public static Printer Out { get; set; } public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } } public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { } public Printer(Stream stream, Encoding encoding) : base(stream, encoding) { } public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); } public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); } } public class StreamScanner { public StreamScanner(Stream stream) { str = stream; } public readonly Stream str; private readonly byte[] buf = new byte[1024]; private int len, ptr; public bool isEof; public bool IsEndOfStream { get { return isEof; } } private byte read() { if (isEof) return 0; if (ptr < len) return buf[ptr++]; ptr = 0; if ((len = str.Read(buf, 0, 1024)) > 0) return buf[ptr++]; isEof = true; return 0; } public char Char() { byte b; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; } public string Scan() { var sb = new StringBuilder(); for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b); return sb.ToString(); } public string ScanLine() { var sb = new StringBuilder(); for (var b = Char(); b != '\n'; b = (char)read()) if (b == 0) break; else if (b != '\r') sb.Append(b); return sb.ToString(); } public long Long() { if (isEof) return long.MinValue; long ret = 0; byte b; var ng = false; do b = read(); while (b != 0 && b != '-' && (b < '0' || '9' < b)); if (b == 0) return long.MinValue; if (b == '-') { ng = true; b = read(); } for (; ; b = read()) { if (b < '0' || '9' < b) return ng ? -ret : ret; ret = ret * 10 + b - '0'; } } public int Integer() { return (isEof) ? int.MinValue : (int)Long(); } public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; } static T[] enumerate<T>(int n, Func<T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(); return a; } public char[] Char(int n) { return enumerate(n, Char); } public string[] Scan(int n) { return enumerate(n, Scan); } public double[] Double(int n) { return enumerate(n, Double); } public int[] Integer(int n) { return enumerate(n, Integer); } public long[] Long(int n) { return enumerate(n, Long); } } } #endregion
Submission Info
Submission Time | |
---|---|
Task | C - Daydream |
User | yambe2002 |
Language | C# (Mono 4.6.2.0) |
Score | 300 |
Code Size | 5968 Byte |
Status | AC |
Exec Time | 33 ms |
Memory | 14944 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 300 / 300 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | subtask0_0.txt, subtask0_1.txt, subtask0_2.txt |
All | subtask0_0.txt, subtask0_1.txt, subtask0_2.txt, subtask1_0.txt, subtask1_1.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_2.txt, subtask1_3.txt, subtask1_4.txt, subtask1_5.txt, subtask1_6.txt, subtask1_7.txt, subtask1_8.txt, subtask1_9.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
subtask0_0.txt | AC | 28 ms | 13396 KB |
subtask0_1.txt | AC | 28 ms | 11348 KB |
subtask0_2.txt | AC | 28 ms | 11348 KB |
subtask1_0.txt | AC | 32 ms | 12896 KB |
subtask1_1.txt | AC | 32 ms | 10848 KB |
subtask1_10.txt | AC | 32 ms | 10848 KB |
subtask1_11.txt | AC | 33 ms | 12896 KB |
subtask1_12.txt | AC | 33 ms | 10848 KB |
subtask1_13.txt | AC | 32 ms | 12896 KB |
subtask1_14.txt | AC | 33 ms | 12896 KB |
subtask1_15.txt | AC | 33 ms | 12896 KB |
subtask1_2.txt | AC | 32 ms | 12896 KB |
subtask1_3.txt | AC | 32 ms | 12896 KB |
subtask1_4.txt | AC | 33 ms | 10848 KB |
subtask1_5.txt | AC | 32 ms | 10848 KB |
subtask1_6.txt | AC | 33 ms | 14944 KB |
subtask1_7.txt | AC | 32 ms | 12896 KB |
subtask1_8.txt | AC | 32 ms | 10848 KB |
subtask1_9.txt | AC | 33 ms | 12896 KB |