結果

問題 No.314 ケンケンパ
ユーザー threepipes_sthreepipes_s
提出日時 2015-12-07 00:16:46
言語 Java19
(openjdk 21)
結果
AC  
実行時間 214 ms / 1,000 ms
コード長 2,529 bytes
コンパイル時間 5,268 ms
コンパイル使用メモリ 76,960 KB
実行使用メモリ 85,116 KB
最終ジャッジ日時 2023-10-12 18:31:30
合計ジャッジ時間 6,481 ms
ジャッジサーバーID
(参考情報)
judge11 / judge15
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 212 ms
85,116 KB
testcase_01 AC 43 ms
49,484 KB
testcase_02 AC 43 ms
49,196 KB
testcase_03 AC 44 ms
49,840 KB
testcase_04 AC 44 ms
49,256 KB
testcase_05 AC 44 ms
49,640 KB
testcase_06 AC 44 ms
49,472 KB
testcase_07 AC 44 ms
49,348 KB
testcase_08 AC 44 ms
49,532 KB
testcase_09 AC 46 ms
49,388 KB
testcase_10 AC 46 ms
49,408 KB
testcase_11 AC 46 ms
49,460 KB
testcase_12 AC 45 ms
49,620 KB
testcase_13 AC 46 ms
49,480 KB
testcase_14 AC 46 ms
49,800 KB
testcase_15 AC 46 ms
49,260 KB
testcase_16 AC 49 ms
49,368 KB
testcase_17 AC 63 ms
54,068 KB
testcase_18 AC 125 ms
65,364 KB
testcase_19 AC 214 ms
84,700 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 #

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
 
public class Main {
	public static void main(String[] args) throws NumberFormatException,
	IOException {Solve solve = new Solve();solve.solve();}
}
class Solve{
	void solve() throws NumberFormatException, IOException{
		ContestScanner in = new ContestScanner();
		Writer out = new Writer();
		int n = in.nextInt();
		int[][] dp = new int[n][3];
		dp[0][0] = 1;
		dp[0][2] = 0;
		int mod = 1000000007;
		for(int i=1; i<n; i++){
			dp[i][0] = (dp[i][0]+dp[i-1][2])%mod;
			dp[i][1] = (dp[i][1]+dp[i-1][0])%mod;
			dp[i][2] = (int)(((long)dp[i][2]+dp[i-1][1]+dp[i-1][0])%mod);
		}
		long sum = 0;
		for(int i=0; i<3; i++){
			sum = (sum+dp[n-1][i])%mod;
		}
		System.out.println(sum);
	}
}
 
class MultiSet<T> extends HashMap<T, Integer>{
	@Override
	public Integer get(Object key){return containsKey(key)?super.get(key):0;}
	public void add(T key,int v){put(key,get(key)+v);}
	public void add(T key){put(key,get(key)+1);}
}
class Timer{
	long time;
	public void set(){time = System.currentTimeMillis();}
	public long stop(){return System.currentTimeMillis()-time;}
}
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 {
	private BufferedReader reader;
	private String[] line;
	private int idx;
	public ContestScanner() throws FileNotFoundException 
	{reader = new BufferedReader(new InputStreamReader(System.in));}
	public ContestScanner(String filename) throws FileNotFoundException
	{reader = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));}
	public String nextToken() throws IOException {
		if (line == null || line.length <= idx) {
			line = reader.readLine().trim().split(" ");
			idx = 0;
		}
		return line[idx++];
	}
	public String readLine() throws IOException{return reader.readLine();}
	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());}
}
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