結果
問題 | No.168 ものさし |
ユーザー | yuya178 |
提出日時 | 2017-10-30 16:34:04 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 311 ms / 2,000 ms |
コード長 | 6,096 bytes |
コンパイル時間 | 2,658 ms |
コンパイル使用メモリ | 79,108 KB |
実行使用メモリ | 101,300 KB |
最終ジャッジ日時 | 2023-08-25 21:07:17 |
合計ジャッジ時間 | 8,776 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge12 |
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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 | 162 ms
62,128 KB |
testcase_01 | AC | 52 ms
50,012 KB |
testcase_02 | AC | 51 ms
50,100 KB |
testcase_03 | AC | 54 ms
50,256 KB |
testcase_04 | AC | 53 ms
50,276 KB |
testcase_05 | AC | 76 ms
50,088 KB |
testcase_06 | AC | 56 ms
50,152 KB |
testcase_07 | AC | 53 ms
49,972 KB |
testcase_08 | AC | 54 ms
50,132 KB |
testcase_09 | AC | 66 ms
52,104 KB |
testcase_10 | AC | 90 ms
52,184 KB |
testcase_11 | AC | 147 ms
57,988 KB |
testcase_12 | AC | 255 ms
82,712 KB |
testcase_13 | AC | 289 ms
100,660 KB |
testcase_14 | AC | 283 ms
100,592 KB |
testcase_15 | AC | 54 ms
50,020 KB |
testcase_16 | AC | 60 ms
51,176 KB |
testcase_17 | AC | 79 ms
52,368 KB |
testcase_18 | AC | 90 ms
54,100 KB |
testcase_19 | AC | 286 ms
100,776 KB |
testcase_20 | AC | 271 ms
101,024 KB |
testcase_21 | AC | 311 ms
101,300 KB |
testcase_22 | AC | 279 ms
100,752 KB |
ソースコード
import java.io.*; import java.util.*; import java.math.*; public class Main { InputStream is; PrintWriter out; String INPUT = ""; int MOD = 1000000007; int INF = 10000000; void solve() { int n = ni(); int[][] node = new int[n][]; for(int i = 0; i < n; i++){ node[i] = new int[]{ni(), ni()}; } PriorityQueue<Edge> pq = new PriorityQueue<>(1, (a,b) -> Long.compare(a.cost,b.cost)); Edge[] edge = new Edge[n*n]; int k = 0; for(int i = 0; i < n; i++){ for(int j = 0; j < n; j++){ long l =(long)Math.pow(Math.abs(node[i][0]-node[j][0]),2)+(long)Math.pow(Math.abs(node[i][1]-node[j][1]),2); edge[k] = new Edge(i,j,l); pq.add(edge[k]); k++; } } UnionFind uf = new UnionFind(n); for(int i = 0; i < n*n; i++){ Edge e = pq.poll(); uf.union(e.from, e.to); if(uf.same(0,n-1)){ long ans = (sqrtCeil(e.cost)+9)/10*10; out.println(ans); break; } } } static long sqrtCeil(long n) { long l = 0; long r = 2000000000; while(l + 1 < r) { long c = (l + r) >>> 1; if (c * c >= n) { r = c; }else{ l = c; } } return r; } class Edge { int from; int to; long cost; public Edge(int from, int to, long cost) { this.from = from; this.to = to; this.cost = cost; } } public static class UnionFind{ int parent[]; int rank[]; public UnionFind(int n){ parent = new int[n]; rank = new int[n]; for(int i = 0;i < n;i++){ parent[i] = i; rank[i] = 0; } } boolean same(int x,int y){ return find(x) == find(y); } public int find(int x){ if(parent[x] == x){ return x; }else{ return parent[x] = find(parent[x]); } } public void union(int x,int y){ x = find(x); y = find(y); if(x != y){ if(rank[x] > rank[y]){ parent[y] = x; }else{ parent[x] = y; if(rank[x] == rank[y]){ rank[y]++; } } } return; } public int count(int n){ int ret = 0; for(int i = 0;i < n;i++){ if(i == find(i)){ ret++; } } 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"); } public static void main(String[] args) throws Exception { new Main().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) && 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)); } }