結果
| 問題 |
No.556 仁義なきサルたち
|
| ユーザー |
tookunn_1213
|
| 提出日時 | 2017-08-12 08:44:28 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 141 ms / 2,000 ms |
| コード長 | 2,435 bytes |
| コンパイル時間 | 2,440 ms |
| コンパイル使用メモリ | 78,796 KB |
| 実行使用メモリ | 42,364 KB |
| 最終ジャッジ日時 | 2024-10-13 04:25:08 |
| 合計ジャッジ時間 | 5,070 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 22 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.NoSuchElementException;
public class Main {
int N,M;
int[] union,size;
public void init(int n){
union = new int[n];
size = new int[n];
for(int i = 0;i < n;i++){
union[i] = i;
}
Arrays.fill(size,1);
}
public void unite(int x,int y){
x = root(x);
y = root(y);
if(x == y)return;
if(size[x] < size[y]){
union[x] = y;
size[y] += size[x];
size[x] = 0;
}else if(size[x] > size[y]){
union[y] = x;
size[x] += size[y];
size[y] = 0;
}else{
if(x < y){
union[y] = x;
size[x] += size[y];
size[y] = 0;
}else{
union[x] = y;
size[y] += size[x];
size[x] = 0;
}
}
}
public int root(int x){
if(union[x] == x)return x;
return root(union[x]);
}
public boolean same(int x,int y){
return root(x) == root(y);
}
public void solve() {
N = nextInt();
M = nextInt();
init(N);
for(int i = 0;i < M;i++){
int a = nextInt()-1;
int b = nextInt()-1;
unite(a,b);
}
for(int i = 0;i < N;i++){
out.println(root(i) + 1);
}
}
public static void main(String[] args) {
out.flush();
new Main().solve();
out.close();
}
/* Input */
private static final InputStream in = System.in;
private static final PrintWriter out = new PrintWriter(System.out);
private final byte[] buffer = new byte[2048];
private int p = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (p < buflen)
return true;
p = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0)
return false;
return true;
}
public boolean hasNext() {
while (hasNextByte() && !isPrint(buffer[p])) {
p++;
}
return hasNextByte();
}
private boolean isPrint(int ch) {
if (ch >= '!' && ch <= '~')
return true;
return false;
}
private int nextByte() {
if (!hasNextByte())
return -1;
return buffer[p++];
}
public String next() {
if (!hasNext())
throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = -1;
while (isPrint((b = nextByte()))) {
sb.appendCodePoint(b);
}
return sb.toString();
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
}
tookunn_1213