結果
| 問題 |
No.1194 Replace
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-06-21 16:43:53 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,856 bytes |
| コンパイル時間 | 2,807 ms |
| コンパイル使用メモリ | 92,692 KB |
| 実行使用メモリ | 118,232 KB |
| 最終ジャッジ日時 | 2024-06-29 02:27:46 |
| 合計ジャッジ時間 | 36,697 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 8 WA * 19 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
static ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
static int[] values;
static int[] orgs;
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int m = sc.nextInt();
int[] lefts = new int[m];
int[] rights = new int[m];
TreeMap<Integer, Integer> compress = new TreeMap<>();
long ans = n * (n + 1L) / 2;
for (int i = 0; i < m; i++) {
lefts[i] = sc.nextInt();
rights[i] = sc.nextInt();
compress.put(lefts[i], null);
compress.put(rights[i], null);
}
int size = compress.size();
orgs = new int[size];
int idx = 0;
for (int x : compress.keySet()) {
ans -= x;
compress.put(x, idx);
orgs[idx] = x;
idx++;
}
values = new int[size];
Arrays.fill(values, -1);
for (int i = 0; i < size; i++) {
graph.add(new ArrayList<>());
}
for (int i = 0; i < m; i++) {
graph.get(compress.get(lefts[i])).add(compress.get(rights[i]));
}
for (int i = 0; i < size; i++) {
ans += check(i);
}
System.out.println(ans);
}
static int check(int x) {
if (values[x] < 0) {
values[x] = orgs[x];
for (int y : graph.get(x)) {
values[x] = Math.max(values[x], check(y));
}
}
return values[x];
}
}
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();
}
}
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