結果
| 問題 |
No.1147 土偶Ⅱ
|
| ユーザー |
tenten
|
| 提出日時 | 2023-02-16 16:14:44 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 128 ms / 500 ms |
| コード長 | 2,729 bytes |
| コンパイル時間 | 3,788 ms |
| コンパイル使用メモリ | 95,964 KB |
| 実行使用メモリ | 53,300 KB |
| 最終ジャッジ日時 | 2024-07-18 16:35:31 |
| 合計ジャッジ時間 | 6,004 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 20 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int m = sc.nextInt();
ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
ArrayList<HashSet<Integer>> relations = new ArrayList<>();
for (int i = 0; i < n; i++) {
graph.add(new ArrayList<>());
relations.add(new HashSet<>());
}
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 i = 0; i < n; i++) {
for (int x : graph.get(i)) {
relations.get(i).addAll(graph.get(x));
}
for (int x : graph.get(i)) {
relations.get(i).remove(x);
}
relations.get(i).remove(i);
}
int ans = 0;
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (relations.get(i).contains(j)) {
continue;
}
for (int k = j + 1; k < n; k++) {
if (relations.get(i).contains(k) || relations.get(j).contains(k)) {
continue;
}
ans++;
}
}
}
System.out.println(ans);
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
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 int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten