結果
| 問題 |
No.416 旅行会社
|
| ユーザー |
 tanzaku
|
| 提出日時 | 2016-08-26 22:36:09 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 1,164 ms / 4,000 ms |
| コード長 | 7,362 bytes |
| コンパイル時間 | 3,246 ms |
| コンパイル使用メモリ | 91,760 KB |
| 実行使用メモリ | 91,452 KB |
| 最終ジャッジ日時 | 2024-12-14 19:47:20 |
| 合計ジャッジ時間 | 16,227 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 21 |
ソースコード
import java.io.*;
import java.math.*;
import java.util.*;
import static java.util.Arrays.*;
public class Main {
private static final int mod = (int)1e9+7;
final Random random = new Random(0);
final IOFast io = new IOFast();
/// MAIN CODE
public void run() throws IOException {
// int TEST_CASE = Integer.parseInt(new String(io.nextLine()).trim());
int TEST_CASE = 1;
while(TEST_CASE-- != 0) {
int n = io.nextInt();
int m = io.nextInt();
int Q = io.nextInt();
long[] es = new long[m];
long[] d = new long[Q];
TreeSet<Long> set = new TreeSet<>();
UnionFind uf = new UnionFind(n);
for(int i = 0; i < m; i++) {
es[i] = io.nextLong() << 32 | io.nextLong();
}
for(int i = 0; i < Q; i++) {
long a = io.nextLong();
long b = io.nextLong();
d[i] = a << 32 | b;
set.add(a << 32 | b);
set.add(a | b << 32);
}
for(long e : es) if(!set.contains(e)) {
long a = e & 0xFFFFFFFFL;
long b = e >>> 32;
uf.union((int)a - 1, (int)b - 1);
}
int[] ans = new int[n-1];
for(int i = 1; i < n; i++) {
if(uf.same(i, 0)) {
ans[i-1] = -1;
}
}
for(int i = Q - 1; i >= 0; i--) {
long a = d[i] & 0xFFFFFFFFL;
long b = d[i] >>> 32;
int aa = (int)a - 1;
int bb = (int)b - 1;
if(!uf.same(aa, bb)) {
int con = -1;
if(uf.same(0, aa)) con = bb;
else if(uf.same(0, bb)) con = aa;
if(con != -1) {
for(int idx = uf.root(con); idx != -1; idx = uf.next[idx]) {
ans[idx - 1] = i + 1;
}
}
uf.union(aa, bb);
}
}
for(int x : ans) {
io.out.println(x);
}
}
}
static
class UnionFind {
private int[] data;
private int[] next;
private int[] last;
public UnionFind(int size) {
data = new int[size];
next = new int[size];
last = new int[size];
clear();
}
public UnionFind(final UnionFind uf) {
data = uf.data.clone();
next = uf.next.clone();
last = uf.last.clone();
}
public void clear() {
Arrays.fill(data, -1);
Arrays.fill(next, -1);
for(int i = 0; i < last.length; i++) {
last[i] = i;
}
}
public int root(int x) { return data[x] < 0 ? x : (data[x] = root(data[x])); }
public void union(int x, int y) {
if((x = root(x)) != (y = root(y))) {
if(data[y] < data[x]) { final int t = x; x = y; y = t; }
next[last[x]] = y;
last[x] = last[y];
data[x] += data[y];
data[y] = x;
}
}
public boolean same(int x, int y) { return root(x) == root(y); }
public int size(int x) { return -data[root(x)]; }
}
/// TEMPLATE
static int gcd(int n, int r) { return r == 0 ? n : gcd(r, n%r); }
static long gcd(long n, long r) { return r == 0 ? n : gcd(r, n%r); }
static <T> void swap(T[] x, int i, int j) { T t = x[i]; x[i] = x[j]; x[j] = t; }
static void swap(int[] x, int i, int j) { int t = x[i]; x[i] = x[j]; x[j] = t; }
static void dump(Object... o) { System.err.println(Arrays.deepToString(o)); }
void main() throws IOException {
// IOFast.setFileIO("rle-size.in", "rle-size.out");
try { run(); }
catch (EndOfFileRuntimeException e) { }
io.out.flush();
}
public static void main(String[] args) throws IOException { new Main().main(); }
static class EndOfFileRuntimeException extends RuntimeException {
private static final long serialVersionUID = -8565341110209207657L; }
static
public class IOFast {
private BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
private PrintWriter out = new PrintWriter(System.out);
void setFileIn(String ins) throws IOException { in.close(); in = new BufferedReader(new FileReader(ins)); }
void setFileOut(String outs) throws IOException { out.flush(); out.close(); out = new PrintWriter(new FileWriter(outs)); }
void setFileIO(String ins, String outs) throws IOException { setFileIn(ins); setFileOut(outs); }
private static int pos, readLen;
private static final char[] buffer = new char[1024 * 8];
private static char[] str = new char[500*8*2];
private static boolean[] isDigit = new boolean[256];
private static boolean[] isSpace = new boolean[256];
private static boolean[] isLineSep = new boolean[256];
static { for(int i = 0; i < 10; i++) { isDigit['0' + i] = true; } isDigit['-'] = true; isSpace[' '] = isSpace['\r'] = isSpace['\n'] = isSpace['\t'] = true; isLineSep['\r'] = isLineSep['\n'] = true; }
public int read() throws IOException { if(pos >= readLen) { pos = 0; readLen = in.read(buffer); if(readLen <= 0) { throw new EndOfFileRuntimeException(); } } return buffer[pos++]; }
public int nextInt() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; int ret = 0; if(str[0] == '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }
public long nextLong() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; long ret = 0; if(str[0] == '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }
public char nextChar() throws IOException { while(true) { final int c = read(); if(!isSpace[c]) { return (char)c; } } }
int reads(int len, boolean[] accept) throws IOException { try { while(true) { final int c = read(); if(accept[c]) { break; } if(str.length == len) { char[] rep = new char[str.length * 3 / 2]; System.arraycopy(str, 0, rep, 0, str.length); str = rep; } str[len++] = (char)c; } } catch(EndOfFileRuntimeException e) { ; } return len; }
int reads(char[] cs, int len, boolean[] accept) throws IOException { try { while(true) { final int c = read(); if(accept[c]) { break; } cs[len++] = (char)c; } } catch(EndOfFileRuntimeException e) { ; } return len; }
public char[] nextLine() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isLineSep); try { if(str[len-1] == '\r') { len--; read(); } } catch(EndOfFileRuntimeException e) { ; } return Arrays.copyOf(str, len); }
public String nextString() throws IOException { return new String(next()); }
public char[] next() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); return Arrays.copyOf(str, len); }
// public int next(char[] cs) throws IOException { int len = 0; cs[len++] = nextChar(); len = reads(cs, len, isSpace); return len; }
public double nextDouble() throws IOException { return Double.parseDouble(nextString()); }
public long[] nextLongArray(final int n) throws IOException { final long[] res = new long[n]; for(int i = 0; i < n; i++) { res[i] = nextLong(); } return res; }
public int[] nextIntArray(final int n) throws IOException { final int[] res = new int[n]; for(int i = 0; i < n; i++) { res[i] = nextInt(); } return res; }
public int[][] nextIntArray2D(final int n, final int k) throws IOException { final int[][] res = new int[n][]; for(int i = 0; i < n; i++) { res[i] = nextIntArray(k); } return res; }
public int[][] nextIntArray2DWithIndex(final int n, final int k) throws IOException { final int[][] res = new int[n][k+1]; for(int i = 0; i < n; i++) { for(int j = 0; j < k; j++) { res[i][j] = nextInt(); } res[i][k] = i; } return res; }
public double[] nextDoubleArray(final int n) throws IOException { final double[] res = new double[n]; for(int i = 0; i < n; i++) { res[i] = nextDouble(); } return res; }
}
}