結果
| 問題 | No.1266 7 Colors |
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2022-08-16 12:45:04 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 1,047 ms / 3,000 ms |
| コード長 | 3,815 bytes |
| コンパイル時間 | 2,123 ms |
| コンパイル使用メモリ | 78,876 KB |
| 実行使用メモリ | 96,704 KB |
| 最終ジャッジ日時 | 2024-10-03 04:16:27 |
| 合計ジャッジ時間 | 18,838 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 19 |
ソースコード
import java.io.*;
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int m = sc.nextInt();
int q = sc.nextInt();
char[][] colors = new char[n][];
ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
UnionFindTree uft = new UnionFindTree(n * 7);
for (int i = 0; i < n; i++) {
colors[i] = sc.next().toCharArray();
for (int j = 0; j < 7; j++) {
if (colors[i][j] == '1' && colors[i][(j + 1) % 7] == '1') {
uft.unite(i * 7 + j, i * 7 + (j + 1) % 7);
}
}
graph.add(new ArrayList<>());
}
for (int i = 0; i < m; i++) {
int a = sc.nextInt() - 1;
int b = sc.nextInt() - 1;
graph.get(a).add(b);
graph.get(b).add(a);
for (int j = 0; j < 7; j++) {
if (colors[a][j] == '1' && colors[b][j] == '1') {
uft.unite(a * 7 + j, b * 7 + j);
}
}
}
StringBuilder sb = new StringBuilder();
while (q-- > 0) {
if (sc.nextInt() == 1) {
int city = sc.nextInt() - 1;
int color = sc.nextInt() - 1;
colors[city][color] = '1';
if (colors[city][(color - 1 + 7) % 7] == '1') {
uft.unite(city * 7 + color, city * 7 + (color - 1 + 7) % 7);
}
if (colors[city][(color + 1) % 7] == '1') {
uft.unite(city * 7 + color, city * 7 + (color + 1) % 7);
}
for (int x : graph.get(city)) {
if (colors[x][color] == '1') {
uft.unite(city * 7 + color, x * 7 + color);
}
}
} else {
int city = sc.nextInt() - 1;
sc.nextInt();
sb.append(uft.getCount(city * 7)).append("\n");
}
}
System.out.print(sb);
}
static class UnionFindTree {
int[] parents;
int[] counts;
public UnionFindTree(int size) {
parents = new int[size];
counts = new int[size];
for (int i = 0; i < size; i++) {
parents[i] = i;
counts[i] = 1;
}
}
public int find(int x) {
if (x == parents[x]) {
return x;
} else {
return parents[x] = find(parents[x]);
}
}
public boolean same(int x, int y) {
return find(x) == find(y);
}
public void unite(int x, int y) {
int xx = find(x);
int yy = find(y);
if (xx == yy) {
return;
}
parents[yy] = xx;
counts[xx] += counts[yy];
}
public int getCount(int x) {
return counts[find(x)];
}
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
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