結果

問題 No.1150 シュークリームゲーム(Easy)
ユーザー uwiuwi
提出日時 2020-08-15 12:47:06
言語 Java21
(openjdk 21)
結果
AC  
実行時間 111 ms / 2,000 ms
コード長 3,825 bytes
コンパイル時間 4,483 ms
コンパイル使用メモリ 84,088 KB
実行使用メモリ 39,916 KB
最終ジャッジ日時 2024-10-10 17:40:48
合計ジャッジ時間 9,205 ms
ジャッジサーバーID
(参考情報)
judge2 / 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 51 ms
37,116 KB
testcase_01 AC 52 ms
37,032 KB
testcase_02 AC 52 ms
36,956 KB
testcase_03 AC 51 ms
37,068 KB
testcase_04 AC 52 ms
37,140 KB
testcase_05 AC 52 ms
37,140 KB
testcase_06 AC 54 ms
37,076 KB
testcase_07 AC 52 ms
36,472 KB
testcase_08 AC 52 ms
36,512 KB
testcase_09 AC 52 ms
36,772 KB
testcase_10 AC 54 ms
36,504 KB
testcase_11 AC 52 ms
36,548 KB
testcase_12 AC 52 ms
37,024 KB
testcase_13 AC 53 ms
37,196 KB
testcase_14 AC 52 ms
37,076 KB
testcase_15 AC 52 ms
37,192 KB
testcase_16 AC 52 ms
36,848 KB
testcase_17 AC 55 ms
37,060 KB
testcase_18 AC 53 ms
37,048 KB
testcase_19 AC 53 ms
36,828 KB
testcase_20 AC 54 ms
37,152 KB
testcase_21 AC 52 ms
36,872 KB
testcase_22 AC 108 ms
39,432 KB
testcase_23 AC 107 ms
39,624 KB
testcase_24 AC 107 ms
39,068 KB
testcase_25 AC 104 ms
39,076 KB
testcase_26 AC 106 ms
39,552 KB
testcase_27 AC 107 ms
39,392 KB
testcase_28 AC 108 ms
39,428 KB
testcase_29 AC 102 ms
39,264 KB
testcase_30 AC 108 ms
39,688 KB
testcase_31 AC 106 ms
39,072 KB
testcase_32 AC 107 ms
39,200 KB
testcase_33 AC 110 ms
39,156 KB
testcase_34 AC 108 ms
39,336 KB
testcase_35 AC 107 ms
39,464 KB
testcase_36 AC 108 ms
39,788 KB
testcase_37 AC 111 ms
39,668 KB
testcase_38 AC 109 ms
39,280 KB
testcase_39 AC 107 ms
39,360 KB
testcase_40 AC 108 ms
39,712 KB
testcase_41 AC 110 ms
39,508 KB
testcase_42 AC 102 ms
39,768 KB
testcase_43 AC 105 ms
39,916 KB
testcase_44 AC 110 ms
39,752 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 no1xxx;
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 No1150 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni(), s = ni()-1, t = ni()-1;
		int[] a = na(n);
		long[] ca = cum(a);
		int len = (n+1)/2;
		long ans = Long.MIN_VALUE;
		int st = s < t ? (s+t)/2 + 1 : ((s+t+n)/2+1)%n;
		int st2 = s < t ? (s+t+n-1)/2%n : (s+t-1)/2;
		for(int i = 0;i < n;i++){
			long sum = ca[(i+len) % n] - ca[i] + (i+len >= n ? ca[n] : 0);
			sum -= ca[i] - ca[(i+len)%n] + (i+len < n ? ca[n] : 0);
			if(in(i, (i+len-1)%n, s) && !in(i, (i+len-1)%n, st) && !in(i, (i+len-1)%n, st2)){
//				tr(i);
				ans = Math.max(ans, sum);
			}
		}
		out.println(ans);
	}
	
	static boolean in(int a, int b, int t)
	{
		if(a <= b){
			return a <= t && t <= b;
		}else{
			return !(b < t && t < a);
		}
	}
	
	static long[] cum(int... a){
		long[] b = new long[a.length+1];
		for(int i = 0;i < a.length;i++)b[i+1] = b[i] + a[i];
		return b;
	}
	
	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 No1150().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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