#462166 (Java21) No.1023 Cyclic Tour

提出ソース

結果

問題	No.1023 Cyclic Tour
ユーザー	uwi
提出日時	2020-04-10 22:18:12
言語	Java21 (openjdk 21)
結果	WA
実行時間	-
コード長	4,984 bytes
コンパイル時間	4,869 ms
コンパイル使用メモリ	87,184 KB
実行使用メモリ	60,164 KB
最終ジャッジ日時	2024-09-15 20:45:05
合計ジャッジ時間	22,494 ms
ジャッジサーバーID （参考情報）	judge3 / 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	52 ms 36,900 KB
testcase_01	AC	52 ms 36,780 KB
testcase_02	AC	52 ms 36,536 KB
testcase_03	AC	51 ms 36,180 KB
testcase_04	AC	230 ms 51,108 KB
testcase_05	AC	225 ms 51,128 KB
testcase_06	AC	323 ms 55,780 KB
testcase_07	AC	291 ms 52,404 KB
testcase_08	AC	200 ms 51,188 KB
testcase_09	AC	193 ms 50,868 KB
testcase_10	AC	194 ms 51,032 KB
testcase_11	WA	-
testcase_12	WA	-
testcase_13	WA	-
testcase_14	AC	179 ms 46,252 KB
testcase_15	WA	-
testcase_16	AC	297 ms 55,980 KB
testcase_17	AC	300 ms 55,892 KB
testcase_18	AC	301 ms 55,608 KB
testcase_19	AC	308 ms 55,772 KB
testcase_20	WA	-
testcase_21	WA	-
testcase_22	WA	-
testcase_23	WA	-
testcase_24	WA	-
testcase_25	AC	301 ms 56,084 KB
testcase_26	AC	334 ms 56,384 KB
testcase_27	AC	298 ms 56,108 KB
testcase_28	AC	317 ms 55,560 KB
testcase_29	AC	315 ms 55,932 KB
testcase_30	AC	317 ms 55,792 KB
testcase_31	AC	329 ms 56,724 KB
testcase_32	AC	287 ms 59,640 KB
testcase_33	AC	287 ms 56,976 KB
testcase_34	AC	302 ms 55,796 KB
testcase_35	AC	301 ms 55,952 KB
testcase_36	WA	-
testcase_37	AC	332 ms 56,696 KB
testcase_38	AC	298 ms 57,580 KB
testcase_39	WA	-
testcase_40	AC	307 ms 55,488 KB
testcase_41	AC	312 ms 55,772 KB
testcase_42	AC	299 ms 56,384 KB
testcase_43	AC	320 ms 55,548 KB
testcase_44	AC	240 ms 50,656 KB
testcase_45	AC	542 ms 59,400 KB
testcase_46	AC	199 ms 60,164 KB
testcase_47	WA	-
testcase_48	WA	-
testcase_49	WA	-
testcase_50	WA	-
testcase_51	AC	332 ms 55,948 KB
testcase_52	AC	344 ms 56,520 KB

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ソースコード

raw source code

package contest200410;
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 = "";
	
	// 1-3
	//  /^
	// 2>4
	
	// 1-2
	// ^/^
	// 3-4
	
	void solve()
	{
		int n =ni(), m = ni();
		int[] from = new int[2*m];
		int[] to = new int[2*m];
		int[] ws = new int[2*m];
		int p = 0;
		for(int i = 0;i < m;i++){
			int x = ni()-1, y = ni()-1, c = ni();
			from[p] = x; to[p] = y; ws[p] = c;p++;
			if(c == 1){
				from[p] = y; to[p] = x; ws[p] = c;p++;
			}
		}
		int[][][] g = packWD(n, from, to, ws, p);
		boolean ans = false;
		boolean[] ved = new boolean[n];
		boolean[] aed = new boolean[n];
		for(int i = 0;i < n;i++){
			ans |= dfs(i, -1, 0, g, ved, aed);
		}
		out.println(ans ? "Yes" : "No");
	}
	
	public static int[][][] packWD(int n, int[] from, int[] to, int[] w){ return packWD(n, from, to, w, from.length); }
	public static int[][][] packWD(int n, int[] from, int[] to, int[] w, int sup)
	{
		int[][][] g = new int[n][][];
		int[] p = new int[n];
		for(int i = 0;i < sup;i++)p[from[i]]++;
		for(int i = 0;i < n;i++)g[i] = new int[p[i]][2];
		for(int i = 0;i < sup;i++){
			--p[from[i]];
			g[from[i]][p[from[i]]][0] = to[i];
			g[from[i]][p[from[i]]][1] = w[i];
		}
		return g;
	}
	
	private static boolean dfs(int cur, int pre, int come, int[][][] g, boolean[] ved, boolean[] aed)
	{
		ved[cur] = true;
		int z = 0;
		for(int[] nex : g[cur]){
			if(aed[nex[0]])continue;
			if(nex[0] == pre){
				z++;
			}else if(ved[nex[0]]){
				return true;
			}
			if(!ved[nex[0]]){
				if(dfs(nex[0], cur, nex[1], g, ved, aed))return true;
			}
		}
		if(z > 0){
			if(come == 1){
				return z-1 > 0;
			}else{
				return true;
			}
		}
		
		aed[cur] = true;
		return false;
	}


	public static int[][] packD(int n, int[] from, int[] to){ return packD(n, from, to, from.length);}
	public static int[][] packD(int n, int[] from, int[] to, int sup)
	{
		int[][] g = new int[n][];
		int[] p = new int[n];
		for(int i = 0;i < sup;i++)p[from[i]]++;
		for(int i = 0;i < n;i++)g[i] = new int[p[i]];
		for(int i = 0;i < sup;i++){
			g[from[i]][--p[from[i]]] = to[i];
		}
		return g;
	}

	
	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)); }
}

yukicoder

結果

テストケース

ソースコード