結果
| 問題 |
No.1465 Archaea
|
| コンテスト | |
| ユーザー |
threepipes_s
|
| 提出日時 | 2021-04-02 22:10:27 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 86 ms / 2,000 ms |
| コード長 | 2,555 bytes |
| コンパイル時間 | 2,788 ms |
| コンパイル使用メモリ | 78,832 KB |
| 実行使用メモリ | 38,460 KB |
| 最終ジャッジ日時 | 2024-12-24 01:19:39 |
| 合計ジャッジ時間 | 5,022 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 20 |
ソースコード
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.Closeable;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.*;
public class Main {
static ContestScanner in;static Writer out;static StringBuilder sb=new StringBuilder();
public static void main(String[] args)
{try{in=new ContestScanner();out=new Writer();Main solve=new Main();solve.solve();
in.close();out.flush();out.close();}catch(IOException e){e.printStackTrace();}}
void solve() throws NumberFormatException, IOException{
int n = in.nextInt();
int k = in.nextInt();
int[] dp = new int[n + 1];
Arrays.fill(dp, Integer.MAX_VALUE);
dp[1] = 0;
for (int i = 1; i < n; i++) {
if (dp[i] >= k) continue;
if (i * 2 <= n) dp[i * 2] = Math.min(dp[i * 2], dp[i] + 1);
if (i + 3 <= n) dp[i + 3] = Math.min(dp[i + 3], dp[i] + 1);
}
System.out.println(dp[n] <= k ? "YES" : "NO");
}
}
class Writer extends PrintWriter{
public Writer(String filename)throws IOException
{super(new BufferedWriter(new FileWriter(filename)));}
public Writer()throws IOException{super(System.out);}
}
class ContestScanner implements Closeable{
private BufferedReader in;private int c=-2;
public ContestScanner()throws IOException
{in=new BufferedReader(new InputStreamReader(System.in));}
public ContestScanner(String filename)throws IOException
{in=new BufferedReader(new InputStreamReader(new FileInputStream(filename)));}
public String nextToken()throws IOException {
StringBuilder sb=new StringBuilder();
while((c=in.read())!=-1&&Character.isWhitespace(c));
while(c!=-1&&!Character.isWhitespace(c)){sb.append((char)c);c=in.read();}
return sb.toString();
}
public String readLine()throws IOException{
StringBuilder sb=new StringBuilder();if(c==-2)c=in.read();
while(c!=-1&&c!='\n'&&c!='\r'){sb.append((char)c);c=in.read();}
return sb.toString();
}
public long nextLong()throws IOException,NumberFormatException
{return Long.parseLong(nextToken());}
public int nextInt()throws NumberFormatException,IOException
{return(int)nextLong();}
public double nextDouble()throws NumberFormatException,IOException
{return Double.parseDouble(nextToken());}
public void close() throws IOException {in.close();}
}
threepipes_s