結果

問題 No.1238 選抜クラス
ユーザー uwiuwi
提出日時 2020-09-25 21:29:28
言語 Java21
(openjdk 21)
結果
AC  
実行時間 95 ms / 2,000 ms
コード長 3,524 bytes
コンパイル時間 4,086 ms
コンパイル使用メモリ 80,540 KB
実行使用メモリ 43,108 KB
最終ジャッジ日時 2024-06-28 06:08:00
合計ジャッジ時間 8,222 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge1
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 54 ms
37,528 KB
testcase_01 AC 53 ms
37,524 KB
testcase_02 AC 57 ms
38,496 KB
testcase_03 AC 52 ms
37,176 KB
testcase_04 AC 54 ms
37,364 KB
testcase_05 AC 52 ms
37,384 KB
testcase_06 AC 53 ms
37,352 KB
testcase_07 AC 55 ms
38,280 KB
testcase_08 AC 56 ms
38,244 KB
testcase_09 AC 62 ms
39,548 KB
testcase_10 AC 55 ms
38,116 KB
testcase_11 AC 60 ms
39,520 KB
testcase_12 AC 58 ms
38,716 KB
testcase_13 AC 58 ms
38,756 KB
testcase_14 AC 57 ms
38,440 KB
testcase_15 AC 61 ms
39,228 KB
testcase_16 AC 61 ms
38,768 KB
testcase_17 AC 93 ms
43,016 KB
testcase_18 AC 88 ms
43,064 KB
testcase_19 AC 90 ms
43,044 KB
testcase_20 AC 91 ms
43,108 KB
testcase_21 AC 88 ms
42,900 KB
testcase_22 AC 87 ms
43,048 KB
testcase_23 AC 87 ms
42,980 KB
testcase_24 AC 88 ms
43,032 KB
testcase_25 AC 88 ms
43,040 KB
testcase_26 AC 94 ms
42,904 KB
testcase_27 AC 88 ms
43,108 KB
testcase_28 AC 89 ms
43,032 KB
testcase_29 AC 95 ms
43,036 KB
testcase_30 AC 80 ms
41,672 KB
testcase_31 AC 88 ms
42,772 KB
testcase_32 AC 84 ms
42,936 KB
testcase_33 AC 55 ms
37,988 KB
testcase_34 AC 86 ms
43,044 KB
testcase_35 AC 83 ms
41,840 KB
testcase_36 AC 64 ms
40,312 KB
testcase_37 AC 79 ms
42,024 KB
testcase_38 AC 87 ms
42,988 KB
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ソースコード

diff # 

package contest200925;
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 C {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int mod = 1000000007;
		int n = ni(), K = ni();
		int[] a = na(n);
		for(int i = 0;i < n;i++){
			a[i] -= K;
		}
		long[] dp = new long[20005];
		int O = 10002;
		dp[O] = 1;
		for(int v : a){
			long[] ndp = Arrays.copyOf(dp, dp.length);
			for(int i = 0;i < 20005;i++){
				if(dp[i] == 0)continue;
				ndp[i+v] += dp[i];
				if(ndp[i+v] >= mod)ndp[i+v] -= mod;
			}
			dp = ndp;
		}
		long ans = 0;
		for(int i = O;i < 20005;i++){
			ans += dp[i];
		}
		ans += mod-1;
		ans %= mod;
		out.println(ans%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");
//		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 C().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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