結果

問題 No.1811 EQUIV Ten
ユーザー nishi5451nishi5451
提出日時 2022-01-27 23:00:25
言語 Java21
(openjdk 21)
結果
AC  
実行時間 107 ms / 2,000 ms
コード長 3,221 bytes
コンパイル時間 3,706 ms
コンパイル使用メモリ 75,068 KB
実行使用メモリ 65,860 KB
最終ジャッジ日時 2023-08-27 01:29:13
合計ジャッジ時間 6,083 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge15
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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 43 ms
49,264 KB
testcase_01 AC 42 ms
47,296 KB
testcase_02 AC 40 ms
49,456 KB
testcase_03 AC 41 ms
49,212 KB
testcase_04 AC 41 ms
49,220 KB
testcase_05 AC 42 ms
49,512 KB
testcase_06 AC 42 ms
49,628 KB
testcase_07 AC 42 ms
49,788 KB
testcase_08 AC 40 ms
49,280 KB
testcase_09 AC 41 ms
49,300 KB
testcase_10 AC 42 ms
49,380 KB
testcase_11 AC 98 ms
64,972 KB
testcase_12 AC 97 ms
64,964 KB
testcase_13 AC 103 ms
65,460 KB
testcase_14 AC 97 ms
65,860 KB
testcase_15 AC 95 ms
65,716 KB
testcase_16 AC 42 ms
49,172 KB
testcase_17 AC 41 ms
49,208 KB
testcase_18 AC 42 ms
49,356 KB
testcase_19 AC 42 ms
49,220 KB
testcase_20 AC 46 ms
49,164 KB
testcase_21 AC 46 ms
49,516 KB
testcase_22 AC 42 ms
49,376 KB
testcase_23 AC 76 ms
56,192 KB
testcase_24 AC 51 ms
49,968 KB
testcase_25 AC 44 ms
49,496 KB
testcase_26 AC 74 ms
56,384 KB
testcase_27 AC 42 ms
49,532 KB
testcase_28 AC 41 ms
49,172 KB
testcase_29 AC 42 ms
49,116 KB
testcase_30 AC 96 ms
64,972 KB
testcase_31 AC 45 ms
49,324 KB
testcase_32 AC 50 ms
50,236 KB
testcase_33 AC 50 ms
50,416 KB
testcase_34 AC 107 ms
64,820 KB
testcase_35 AC 73 ms
56,672 KB
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ソースコード

diff # 

import java.util.*;
import java.util.stream.*;
import java.io.*;

public class Main {
	static final int INF = 1<<30;
	static final long INFL = 1L<<60;
	static final int MOD = 1000000007;
	static final int MOD2 = 998244353;
	static List<List<Integer>> g;
	static long modPow(long p, long n){
		p %= MOD;
		long ret = 1;
		while(n > 0){
			if((n & 1) == 1) ret = ret * p % MOD;
			p = p * p % MOD;
			n >>= 1;
		}
		return ret;
	}
	
	public static void main(String[] args) {
		FastScanner fs = new FastScanner();
		PrintWriter pw = new PrintWriter(System.out);
		int n = fs.nextInt();
		if(n <= 3){
			pw.println(0);
		} else {
			long[][] dp = new long[n+1][8];
			for(int i = 0; i < 8; i++) dp[3][i] = 1;
			for(int i = 3; i < n; i++){
				dp[i+1][0] = dp[i][0] + dp[i][1];
				dp[i+1][1] = dp[i][2] + dp[i][3];
				dp[i+1][2] = dp[i][4] + dp[i][5];
				dp[i+1][3] = dp[i][6] + dp[i][7];
				dp[i+1][4] = dp[i][0] + dp[i][1];
				dp[i+1][5] = dp[i][3];
				dp[i+1][6] = dp[i][4] + dp[i][5];
				dp[i+1][7] = dp[i][6] + dp[i][7];
				for(int j = 0; j < 8; j++) dp[i+1][j] %= MOD;
			}
			long ans = 0;
			for(int i = 0; i < 8; i++) ans = (ans + dp[n][i]) % MOD;
			ans = (modPow(2, n) - ans + MOD) % MOD;
			pw.println(ans);
		}

		pw.close();
	}
}

class FastScanner {
	private InputStream in = System.in;
	private byte[] buffer = new byte[1024];
	private int length = 0, p = 0;
	private boolean hasNextByte() {
		if (p < length) return true;
		else{
			p = 0;
			try{
				length = in.read(buffer);
			}catch(Exception e){
				e.printStackTrace();
			}
			if(length == 0) return false;
		}
		return true;
	}
	private int readByte() {
		if (hasNextByte() == true) return buffer[p++];
		return -1;
	}
	private static boolean isPrintable(int n) {
		return 33 <= n && n <= 126;
	}
	private void skip() {
		while (hasNextByte() && !isPrintable(buffer[p])) p++;
	}
	public boolean hasNext() {
		skip();
		return hasNextByte();
	}
	public String next() {
		if(!hasNext()) throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int temp = readByte();
		while (isPrintable(temp)) {
			sb.appendCodePoint(temp);
			temp = readByte();
		}
		return sb.toString();
	}
	public int nextInt() {
		return Math.toIntExact(nextLong());
	}
	public int[] nextInts(int n) {
		int[] ar = new int[n];
		for (int i = 0; i < n; i++) ar[i] = nextInt();
		return ar;
	}
	public long[] nextLongs(int n) {
		long[] ar = new long[n];
		for (int i = 0; i < n; i++) ar[i] = nextLong();
		return ar;
	}
	public long nextLong() {
		if(!hasNext()) throw new NoSuchElementException();
		boolean minus = false;
		int temp = readByte();
		if (temp == '-') {
			minus = true;
			temp = readByte();
		}
		if (temp < '0' || '9' < temp) throw new NumberFormatException();
		long n = 0;
		while (isPrintable(temp)) {
			if ('0' <= temp && temp <= '9') {
				n *= 10;
				n += temp - '0';
			}
			temp = readByte();
		}
		return minus ? -n : n;
	}
	public char[] nextChars() {
		String s = next();
		return s.toCharArray();
	}
	public char[][] nextCharMat(int h, int w) {
		char[][] ar = new char[h][w];
		for(int i = 0; i < h; i++){
			String s = next();
			for(int j = 0; j < w; j++){
				ar[i][j] = s.charAt(j);
			}
		}
		return ar;
	}
}
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