#57340 (Java21) No.281 門松と魔法(1)

提出ソース

結果

問題	No.281 門松と魔法(1)
ユーザー	uwi
提出日時	2015-11-06 17:44:12
言語	Java21 (openjdk 21)
結果	AC
実行時間	57 ms / 1,000 ms
コード長	3,792 bytes
コンパイル時間	4,431 ms
コンパイル使用メモリ	88,056 KB
実行使用メモリ	50,544 KB
最終ジャッジ日時	2024-11-06 20:43:12
合計ジャッジ時間	8,990 ms
ジャッジサーバーID （参考情報）	judge5 / judge2

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	55 ms 49,968 KB
testcase_01	AC	56 ms 49,916 KB
testcase_02	AC	55 ms 50,212 KB
testcase_03	AC	56 ms 50,356 KB
testcase_04	AC	56 ms 50,288 KB
testcase_05	AC	55 ms 50,400 KB
testcase_06	AC	57 ms 50,404 KB
testcase_07	AC	54 ms 50,036 KB
testcase_08	AC	54 ms 50,380 KB
testcase_09	AC	54 ms 50,040 KB
testcase_10	AC	55 ms 49,880 KB
testcase_11	AC	55 ms 50,032 KB
testcase_12	AC	55 ms 50,296 KB
testcase_13	AC	55 ms 50,440 KB
testcase_14	AC	55 ms 50,052 KB
testcase_15	AC	54 ms 50,004 KB
testcase_16	AC	55 ms 50,404 KB
testcase_17	AC	56 ms 50,016 KB
testcase_18	AC	54 ms 50,348 KB
testcase_19	AC	54 ms 50,324 KB
testcase_20	AC	54 ms 50,312 KB
testcase_21	AC	54 ms 50,080 KB
testcase_22	AC	54 ms 50,020 KB
testcase_23	AC	53 ms 50,276 KB
testcase_24	AC	53 ms 49,916 KB
testcase_25	AC	55 ms 50,268 KB
testcase_26	AC	53 ms 50,364 KB
testcase_27	AC	54 ms 49,968 KB
testcase_28	AC	53 ms 50,300 KB
testcase_29	AC	54 ms 50,080 KB
testcase_30	AC	55 ms 50,272 KB
testcase_31	AC	54 ms 49,904 KB
testcase_32	AC	55 ms 50,308 KB
testcase_33	AC	54 ms 50,348 KB
testcase_34	AC	53 ms 50,256 KB
testcase_35	AC	55 ms 50,488 KB
testcase_36	AC	55 ms 50,404 KB
testcase_37	AC	54 ms 50,544 KB
testcase_38	AC	55 ms 50,364 KB
testcase_39	AC	55 ms 50,368 KB
testcase_40	AC	55 ms 50,136 KB
testcase_41	AC	55 ms 50,316 KB
testcase_42	AC	54 ms 50,316 KB
testcase_43	AC	55 ms 50,324 KB
testcase_44	AC	54 ms 50,340 KB
testcase_45	AC	54 ms 49,964 KB
testcase_46	AC	54 ms 49,896 KB
testcase_47	AC	55 ms 50,376 KB
testcase_48	AC	54 ms 50,288 KB
testcase_49	AC	54 ms 50,412 KB
testcase_50	AC	54 ms 50,356 KB
testcase_51	AC	54 ms 50,356 KB
testcase_52	AC	55 ms 50,264 KB
testcase_53	AC	55 ms 50,072 KB
testcase_54	AC	55 ms 50,424 KB
testcase_55	AC	55 ms 49,960 KB
testcase_56	AC	54 ms 49,984 KB

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ソースコード

raw source code

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 Q661 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int d = ni();
		int a = ni(), b = ni(), c = ni();
		if(d == 0){
			if(a != b && b != c && c != a &&
							(a < b && b > c || a > b && b < c)
							){
				out.println(0);
			}else{
				out.println(-1);
			}
			return;
		}
		
		long r1 = hlh(a, b, c, d);
		long r2 = lhl(a, b, c, d);
		if(r1 == -1 && r2 == -1){
			out.println(-1);
		}else if(r1 == -1){
			out.println(r2);
		}else if(r2 == -1){
			out.println(r1);
		}else{
			out.println(Math.min(r1, r2));
		}
	}
	
	long hlh(int a, int b, int c, int d){
		// H L H
		long num = 0;
		if(a == c){
			a = Math.max(a-d, 0);
			num++;
		}
		int min = Math.min(a, c);
		if(min == 0)return -1;
		if(b < min)return num;
		return (b-(min-1)+d-1)/d + num;
	}
	
	long lhl(int a, int b, int c, int d)
	{
		if(b <= 1)return -1;
		long num = 0;
		if(c >= b){
			int mm = (c-(b-1)+d-1)/d;
			num += mm;
			c = Math.max(0, c-d*mm);
		}
		if(a >= b){
			int mm = (a-(b-1)+d-1)/d;
			num += mm;
			a = Math.max(0, a-d*mm);
		}
		if(a == c){
			if(a == 0)return -1;
			num++;
		}
		return num;
	}
	
	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");
	}
	
	public static void main(String[] args) throws Exception { new Q661().run(); }
	
	private byte[] inbuf = new byte[1024];
	private 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 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[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private int ni()
	{
		int num = 0, 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 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)); }
}

yukicoder

結果

テストケース

ソースコード