結果

問題 No.645 Count Permutation
ユーザー uwiuwi
提出日時 2018-02-02 21:46:12
言語 Java21
(openjdk 21)
結果
AC  
実行時間 270 ms / 2,000 ms
コード長 3,733 bytes
コンパイル時間 3,784 ms
コンパイル使用メモリ 82,964 KB
実行使用メモリ 55,040 KB
最終ジャッジ日時 2024-06-10 01:14:21
合計ジャッジ時間 9,189 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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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 47 ms
50,584 KB
testcase_01 AC 48 ms
50,284 KB
testcase_02 AC 57 ms
50,156 KB
testcase_03 AC 49 ms
50,356 KB
testcase_04 AC 48 ms
50,048 KB
testcase_05 AC 47 ms
50,104 KB
testcase_06 AC 50 ms
50,220 KB
testcase_07 AC 49 ms
50,288 KB
testcase_08 AC 48 ms
50,256 KB
testcase_09 AC 55 ms
50,452 KB
testcase_10 AC 51 ms
50,220 KB
testcase_11 AC 110 ms
54,676 KB
testcase_12 AC 101 ms
54,536 KB
testcase_13 AC 109 ms
54,676 KB
testcase_14 AC 74 ms
50,740 KB
testcase_15 AC 119 ms
54,536 KB
testcase_16 AC 173 ms
54,920 KB
testcase_17 AC 265 ms
55,000 KB
testcase_18 AC 159 ms
54,844 KB
testcase_19 AC 270 ms
54,936 KB
testcase_20 AC 269 ms
54,872 KB
testcase_21 AC 155 ms
54,628 KB
testcase_22 AC 49 ms
50,304 KB
testcase_23 AC 49 ms
50,296 KB
testcase_24 AC 173 ms
54,636 KB
testcase_25 AC 200 ms
54,972 KB
testcase_26 AC 247 ms
54,668 KB
testcase_27 AC 181 ms
54,784 KB
testcase_28 AC 160 ms
54,928 KB
testcase_29 AC 211 ms
54,816 KB
testcase_30 AC 229 ms
54,996 KB
testcase_31 AC 253 ms
55,040 KB
testcase_32 AC 110 ms
54,832 KB
testcase_33 AC 143 ms
54,864 KB
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ソースコード

diff # 

package contest180202;
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 D {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni();
		long L = nl(), R = nl();
		long ret = count(R, n) - count(L-1, n);
		if(ret < 0)ret += 1000000007;
		out.println(ret);
	}
	
	long count(long R, int n)
	{
		if(R < 0)return 0;
		long[] c = new long[65];
		c[0] = 1;
		int mod = 1000000007;
		long F = 1;
		for(int i = 1;i <= n-2;i++){
			long[] d = new long[65];
			for(int j = 64;j >= 1;j--){
				d[j] = c[j-1];
			}
			for(int j = 64;j >= 0;j--){
				d[j] += c[j] * i;
			}
			for(int j = 0;j < 65;j++){
				d[j] %= mod;
			}
			c = d;
			F = F * i % mod;
		}
		F = F * (n-1) % mod;
		long G = F * n % mod;
		long ret = 0;
		for(int i = 60;i >= 1;i--){
			if(R >= 1L<<i){
				ret += c[i-1];
			}
		}
		ret += G + (mod-F);
		ret %= mod;
		return ret;
	}
	
	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");
//		Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
//			@Override
//			public void run() {
//				long s = System.currentTimeMillis();
//				solve();
//				out.flush();
//				if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//			}
//		};
//		t.start();
//		t.join();
	}
	
	public static void main(String[] args) throws Exception { new D().run(); }
	
	private byte[] inbuf = new byte[1024];
	public 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 int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		return a;
	}
	
	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[][] nmi(int n, int m) {
		int[][] map = new int[n][];
		for(int i = 0;i < n;i++)map[i] = na(m);
		return map;
	}
	
	private int ni() { return (int)nl(); }
	
	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)); }
}
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