#410606 (Java21) No.957 植林

提出ソース

結果

問題	No.957 植林
ユーザー	uwi
提出日時	2019-12-20 01:53:01
言語	Java21 (openjdk 21)
結果	TLE
実行時間	-
コード長	7,522 bytes
コンパイル時間	4,880 ms
コンパイル使用メモリ	92,320 KB
実行使用メモリ	115,052 KB
最終ジャッジ日時	2024-07-07 02:44:27
合計ジャッジ時間	14,261 ms
ジャッジサーバーID （参考情報）	judge4 / 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	45 ms 56,900 KB
testcase_01	AC	47 ms 50,032 KB
testcase_02	AC	47 ms 50,120 KB
testcase_03	AC	526 ms 89,432 KB
testcase_04	AC	466 ms 88,048 KB
testcase_05	AC	504 ms 89,156 KB
testcase_06	AC	578 ms 89,800 KB
testcase_07	AC	654 ms 89,540 KB
testcase_08	AC	382 ms 88,936 KB
testcase_09	AC	364 ms 88,448 KB
testcase_10	AC	383 ms 89,336 KB
testcase_11	AC	390 ms 89,264 KB
testcase_12	AC	393 ms 88,916 KB
testcase_13	AC	392 ms 82,556 KB
testcase_14	AC	361 ms 88,592 KB
testcase_15	AC	436 ms 89,776 KB
testcase_16	AC	428 ms 88,848 KB
testcase_17	AC	380 ms 88,580 KB
testcase_18	TLE	-
testcase_19	--	-
testcase_20	--	-
testcase_21	--	-
testcase_22	--	-
testcase_23	--	-
testcase_24	--	-
testcase_25	--	-
testcase_26	--	-
testcase_27	--	-
testcase_28	--	-
testcase_29	--	-
testcase_30	--	-
testcase_31	--	-
testcase_32	--	-
testcase_33	--	-
testcase_34	--	-
testcase_35	--	-
testcase_36	--	-
testcase_37	--	-
testcase_38	--	-
testcase_39	--	-
testcase_40	--	-
testcase_41	--	-
testcase_42	--	-
testcase_43	--	-
testcase_44	--	-
testcase_45	--	-
testcase_46	--	-
testcase_47	--	-

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ソースコード

raw source code

package adv2019;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.List;
import java.util.Random;

public class D20_2 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni(), m = ni();
		int[][] g = new int[n][m];
		for(int i = 0;i < n;i++) {
			g[i] = na(m);
		}
		int[] R = na(n);
		int[] C = na(m);
		
		List<Edge> es = new ArrayList<>();
		int src = n*m+n+m, sink = src + 1;
		for(int i = 0;i < n;i++) {
			for(int j = 0;j < m;j++) {
//				es.add(new Edge(src, i*m+j, 0L));
				es.add(new Edge(i*m+j, sink, g[i][j]));
			}
		}
		for(int i = 0;i < n;i++) {
			es.add(new Edge(src, n*m+i, R[i]));
//			es.add(new Edge(n*m+i, sink, 0));
			
			for(int j = 0;j < m;j++) {
				es.add(new Edge(n*m+i, i*m+j, R[i]));
			}
		}
		for(int i = 0;i < m;i++) {
			es.add(new Edge(src, n*m+n+i, C[i]));
//			es.add(new Edge(n*m+n+i, sink, 0));
			for(int j = 0;j < n;j++) {
				es.add(new Edge(n*m+n+i, j*m+i, C[i]));
			}
		}
		
		long ans = 0;
		for(int v : R)ans += v;
		for(int v : C)ans += v;
//		ans -= maximumFlowDinicNoRec(compileWD(sink+1, es), src, sink);
		Edge[][] G = compileWD(sink+1, es);
		
		ans -= maximumFlowDinic(G, src, sink);
		out.println(ans);
	}
	
	public static class Edge
	{
		public int from, to;
		public long capacity;
		public long flow;
		public Edge complement;
		public boolean cloned;
		
		public Edge(int from, int to, long capacity) {
			this.from = from;
			this.to = to;
			this.capacity = capacity;
		}
	}
	
	public static void reset(Edge[][] g)
	{
		for(Edge[] row : g){
			for(Edge e : row){
				e.flow = e.cloned ? e.capacity : 0;
			}
		}
	}
	
	public static Edge[][] compileWD(int n, List<Edge> edges)
	{
		Edge[][] g = new Edge[n][];
		// cloning
		for(int i = edges.size()-1;i >= 0;i--){
			Edge origin = edges.get(i);
			Edge clone = new Edge(origin.to, origin.from, origin.capacity);
			clone.flow = origin.capacity;
			clone.complement = origin;
			clone.cloned = true;
			origin.complement = clone;
			edges.add(clone);
		}
		
		int[] p = new int[n];
		for(Edge e : edges)p[e.from]++;
		for(int i = 0;i < n;i++)g[i] = new Edge[p[i]];
		for(Edge e : edges)g[e.from][--p[e.from]] = e;
		return g;
	}
	
	public static Edge[][] compileWU(int n, List<Edge> edges)
	{
		Edge[][] g = new Edge[n][];
		// cloning
		for(int i = edges.size()-1;i >= 0;i--){
			Edge origin = edges.get(i);
			Edge clone = new Edge(origin.to, origin.from, origin.capacity*2);
			origin.flow = origin.capacity;
			clone.flow = origin.capacity;
			clone.complement = origin;
			clone.cloned = true;
			origin.complement = clone;
			origin.capacity *= 2;
			edges.add(clone);
		}
		
		int[] p = new int[n];
		for(Edge e : edges)p[e.from]++;
		for(int i = 0;i < n;i++)g[i] = new Edge[p[i]];
		for(Edge e : edges)g[e.from][--p[e.from]] = e;
		
		return g;
	}	
	
	public static <T> T[] shuffle(T[] a, Random gen){ for(int i = 0, n = a.length;i < n;i++){ int ind = gen.nextInt(n-i)+i; T d = a[i]; a[i] = a[ind]; a[ind] = d; } return a; }

	
	public static long maximumFlowDinic(Edge[][] g, int source, int sink)
	{
		int n = g.length;
		int[] d = new int[n];
		int[] q = new int[n];
		long ret = 0;
		while(true){
			if(++step == 100000)throw new RuntimeException();
			Arrays.fill(d, 999999999);
			int r = 0;
			q[r++] = sink;
			d[sink] = 0;
			
			for(int v = 0;v < r;v++){
				int cur = q[v];
				for(Edge ne : g[cur]){
					if(d[ne.to] > d[cur] + 1 && ne.flow > 0) {
						q[r++] = ne.to;
						d[ne.to] = d[cur] + 1;
					}
				}
			}
			if(d[source] == 999999999)break;
//			tr(d);
			int[] sp = new int[n];
			for(int i = 0;i < n;i++)sp[i] = g[i].length - 1;
			ret += dfsDinic(d, g, sp, source, sink, Long.MAX_VALUE);
		}
		
		return ret;
	}
	
	static int step = 0;
	
	private static long dfsDinic(int[] d, Edge[][] g, int[] sp, int cur, int sink, long min)
	{
		if(cur == sink)return min;
		long left = min;
		for(int i = sp[cur];i >= 0;i--){
			Edge ne = g[cur][i];
			if(d[ne.to] == d[cur]-1 && ne.capacity - ne.flow > 0){
				long fl = dfsDinic(d, g, sp, ne.to, sink, Math.min(left, ne.capacity - ne.flow));
				if(fl > 0){
					left -= fl;
					ne.flow += fl;
					ne.complement.flow -= fl;
					if(left == 0){
						sp[cur] = i;
						return min;
					}
				}
			}
		}
		sp[cur] = -1;
		return min-left;
	}

	
	void run() throws Exception
	{
//		int n = 400, m = 400;
//		Random gen = new Random(1114);
//		StringBuilder sb = new StringBuilder();
//		sb.append(n + " ");
//		sb.append(m + " ");
//		for (int i = 0; i < n*m+n+m; i++) {
//			if(i < n*m) {
//				sb.append(gen.nextInt(5000000) + " ");
//			}else {
//				sb.append(gen.nextInt(1000000000) + " ");
//			}
//		}
//		INPUT = sb.toString();

		
		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 D20_2().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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結果

テストケース

ソースコード