結果

問題 No.314 ケンケンパ
ユーザー uwiuwi
提出日時 2015-12-07 00:02:56
言語 Java19
(openjdk 21)
結果
AC  
実行時間 223 ms / 1,000 ms
コード長 3,143 bytes
コンパイル時間 6,591 ms
コンパイル使用メモリ 77,332 KB
実行使用メモリ 93,080 KB
最終ジャッジ日時 2023-10-12 17:53:07
合計ジャッジ時間 7,096 ms
ジャッジサーバーID
(参考情報)
judge15 / judge13
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 223 ms
91,092 KB
testcase_01 AC 43 ms
49,128 KB
testcase_02 AC 42 ms
49,064 KB
testcase_03 AC 43 ms
49,152 KB
testcase_04 AC 42 ms
48,996 KB
testcase_05 AC 43 ms
49,436 KB
testcase_06 AC 42 ms
47,392 KB
testcase_07 AC 42 ms
48,952 KB
testcase_08 AC 42 ms
49,188 KB
testcase_09 AC 43 ms
49,300 KB
testcase_10 AC 45 ms
48,968 KB
testcase_11 AC 43 ms
49,180 KB
testcase_12 AC 43 ms
49,116 KB
testcase_13 AC 42 ms
49,204 KB
testcase_14 AC 45 ms
47,164 KB
testcase_15 AC 44 ms
49,628 KB
testcase_16 AC 48 ms
49,112 KB
testcase_17 AC 66 ms
53,748 KB
testcase_18 AC 142 ms
75,428 KB
testcase_19 AC 223 ms
93,080 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

package contest;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;

public class Adv6 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int mod = 1000000007;
		int n = ni();
		long[][] dp = new long[n][3];
		dp[0][1] = 1;
		// p k kk
		for(int i = 0;i < n-1;i++){
			dp[i+1][1] += dp[i][0];
			dp[i+1][2] += dp[i][1];
			dp[i+1][0] += dp[i][1];
			dp[i+1][0] += dp[i][2];
			dp[i+1][0] %= mod;
			dp[i+1][1] %= mod;
			dp[i+1][2] %= mod;
		}
		out.println((dp[n-1][0]+dp[n-1][1]+dp[n-1][2])%mod);
	}
	
	void run() throws Exception
	{
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new PrintWriter(System.out);
		
		long s = System.currentTimeMillis();
		solve();
		out.flush();
		if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
	}
	
	public static void main(String[] args) throws Exception { new Adv6().run(); }
	
	private byte[] inbuf = new byte[1024];
	private int lenbuf = 0, ptrbuf = 0;
	
	private int readByte()
	{
		if(lenbuf == -1)throw new InputMismatchException();
		if(ptrbuf >= lenbuf){
			ptrbuf = 0;
			try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
			if(lenbuf <= 0)return -1;
		}
		return inbuf[ptrbuf++];
	}
	
	private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
	private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
	
	private double nd() { return Double.parseDouble(ns()); }
	private char nc() { return (char)skip(); }
	
	private String ns()
	{
		int b = skip();
		StringBuilder sb = new StringBuilder();
		while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	
	private char[] ns(int n)
	{
		char[] buf = new char[n];
		int b = skip(), p = 0;
		while(p < n && !(isSpaceChar(b))){
			buf[p++] = (char)b;
			b = readByte();
		}
		return n == p ? buf : Arrays.copyOf(buf, p);
	}
	
	private char[][] nm(int n, int m)
	{
		char[][] map = new char[n][];
		for(int i = 0;i < n;i++)map[i] = ns(m);
		return map;
	}
	
	private int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private int ni()
	{
		int num = 0, b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private long nl()
	{
		long num = 0;
		int b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
}
0