結果
問題 | No.654 Air E869120 |
ユーザー | uwi |
提出日時 | 2018-02-23 22:41:52 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 131 ms / 2,000 ms |
コード長 | 8,834 bytes |
コンパイル時間 | 4,205 ms |
コンパイル使用メモリ | 92,596 KB |
実行使用メモリ | 53,488 KB |
最終ジャッジ日時 | 2024-10-09 19:59:53 |
合計ジャッジ時間 | 8,528 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
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
50,524 KB |
testcase_01 | AC | 55 ms
50,472 KB |
testcase_02 | AC | 55 ms
50,408 KB |
testcase_03 | AC | 55 ms
50,544 KB |
testcase_04 | AC | 54 ms
50,460 KB |
testcase_05 | AC | 55 ms
50,540 KB |
testcase_06 | AC | 56 ms
50,116 KB |
testcase_07 | AC | 55 ms
50,556 KB |
testcase_08 | AC | 55 ms
50,520 KB |
testcase_09 | AC | 56 ms
50,528 KB |
testcase_10 | AC | 109 ms
52,588 KB |
testcase_11 | AC | 104 ms
52,336 KB |
testcase_12 | AC | 109 ms
52,936 KB |
testcase_13 | AC | 105 ms
52,508 KB |
testcase_14 | AC | 104 ms
52,520 KB |
testcase_15 | AC | 105 ms
52,532 KB |
testcase_16 | AC | 130 ms
53,332 KB |
testcase_17 | AC | 131 ms
53,388 KB |
testcase_18 | AC | 125 ms
53,124 KB |
testcase_19 | AC | 131 ms
53,488 KB |
testcase_20 | AC | 96 ms
51,968 KB |
testcase_21 | AC | 97 ms
51,776 KB |
testcase_22 | AC | 76 ms
51,292 KB |
testcase_23 | AC | 94 ms
51,768 KB |
testcase_24 | AC | 98 ms
52,168 KB |
testcase_25 | AC | 71 ms
50,692 KB |
testcase_26 | AC | 89 ms
52,032 KB |
testcase_27 | AC | 75 ms
50,788 KB |
testcase_28 | AC | 74 ms
51,268 KB |
testcase_29 | AC | 73 ms
51,000 KB |
testcase_30 | AC | 66 ms
50,880 KB |
testcase_31 | AC | 72 ms
50,280 KB |
testcase_32 | AC | 67 ms
50,800 KB |
testcase_33 | AC | 67 ms
50,992 KB |
testcase_34 | AC | 67 ms
50,368 KB |
testcase_35 | AC | 56 ms
50,552 KB |
testcase_36 | AC | 56 ms
50,444 KB |
testcase_37 | AC | 54 ms
50,404 KB |
testcase_38 | AC | 54 ms
50,440 KB |
testcase_39 | AC | 55 ms
50,520 KB |
ソースコード
package contest180223; 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; public class D { InputStream is; PrintWriter out; String INPUT = ""; void solve() { int n = ni(), m = ni(), d = ni(); int[][] air = new int[m][]; for(int i = 0;i < m;i++)air[i] = new int[]{ni()-1, ni()-1 ,ni(), ni() + d, ni()}; long[] times = new long[2*m+2]; int p = 0; for(int i = 0;i < m;i++){ times[p++] = (long)air[i][0]<<32|air[i][2]; times[p++] = (long)air[i][1]<<32|air[i][3]; } times[p++] = (long)0<<32|0; times[p++] = (long)(n-1)<<32|1000000000+d; Arrays.sort(times); times = uniq(times); List<Edge> es = new ArrayList<Edge>(); for(int i = 0;i < m;i++){ int from = Arrays.binarySearch(times, (long)air[i][0]<<32|air[i][2]); int to = Arrays.binarySearch(times, (long)air[i][1]<<32|air[i][3]); es.add(new Edge(from, to, air[i][4])); } for(int i = 0;i < times.length-1;i++){ if(times[i]>>>32 == times[i+1]>>>32){ es.add(new Edge(i, i+1, 1000000000000L)); } } out.println(maximumFlowDinicNoRec(compileWD(times.length, es), Arrays.binarySearch(times, (long)0<<32|0), Arrays.binarySearch(times, (long)(n-1)<<32|1000000000+d) )); } public static long[] uniq(long[] a) { int n = a.length; int p = 0; for(int i = 0;i < n;i++) { if(i == 0 || a[i] != a[i-1])a[p++] = a[i]; } return Arrays.copyOf(a, p); } 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 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){ Arrays.fill(d, -1); q[0] = source; int r = 1; d[source] = 0; for(int v = 0;v < r;v++){ int cur = q[v]; for(Edge ne : g[cur]){ if(d[ne.to] == -1 && ne.capacity - ne.flow > 0) { q[r++] = ne.to; d[ne.to] = d[cur] + 1; } } } if(d[sink] == -1)break; 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; } 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; } public static long maximumFlowDinicNoRec(Edge[][] g, int source, int sink) { int n = g.length; int[] d = new int[n]; // distance int[] q = new int[n]; // queue for BFS long ret = 0; int[] stack = new int[n]; long[] lefts = new long[n]; // left to flow long[] parflow = new long[n]; int[] probe = new int[n]; // search pointer while(true){ // BFS Arrays.fill(d, -1); q[0] = source; int r = 1; d[source] = 0; for(int v = 0;v < r;v++){ int cur = q[v]; for(Edge ne : g[cur]){ if(d[ne.to] == -1 && ne.capacity - ne.flow > 0) { q[r++] = ne.to; d[ne.to] = d[cur] + 1; } } } if(d[sink] == -1)break; // DFS for(int i = 0;i < n;i++)probe[i] = g[i].length-1; int sp = 0; stack[sp] = source; lefts[sp] = Long.MAX_VALUE / 10; parflow[sp] = 0; sp++; long delta = 0; boolean down = true; while(sp > 0){ int cur = stack[sp-1]; long left = lefts[sp-1]; if(cur == sink){ delta += left; parflow[sp-1] = left; sp--; down = false; continue; } if(!down){ if(parflow[sp] > 0){ lefts[sp-1] -= parflow[sp]; left = lefts[sp-1]; Edge ne = g[cur][probe[cur]]; ne.flow += parflow[sp]; ne.complement.flow -= parflow[sp]; parflow[sp-1] += parflow[sp]; } if(left > 0)probe[cur]--; } if(left > 0 && probe[cur] >= 0){ down = true; Edge ne = g[cur][probe[cur]]; if(d[ne.to] == d[cur]+1 && ne.capacity - ne.flow > 0){ lefts[sp] = Math.min(left, ne.capacity - ne.flow); stack[sp] = ne.to; parflow[sp] = 0; sp++; }else{ probe[cur]--; } }else{ down = false; sp--; } } ret += delta; } return ret; } 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)); } }