結果
| 問題 |
No.694 square1001 and Permutation 3
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-06-15 17:15:06 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 2,783 ms / 3,000 ms |
| コード長 | 3,165 bytes |
| コンパイル時間 | 2,662 ms |
| コンパイル使用メモリ | 85,924 KB |
| 実行使用メモリ | 111,720 KB |
| 最終ジャッジ日時 | 2024-06-23 16:24:43 |
| 合計ジャッジ時間 | 17,340 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 13 |
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[] values = new int[n];
TreeMap<Integer, Integer> compress = new TreeMap<>();
for (int i = 0; i < n; i++) {
values[i] = sc.nextInt();
compress.put(values[i], null);
}
int idx = compress.size();
for (int x : compress.keySet()) {
compress.put(x, idx--);
}
BinaryIndexedTree bit = new BinaryIndexedTree(compress.size() + 1);
long count = 0;
for (int x : values) {
int y = compress.get(x);
count += bit.getSum(y - 1);
bit.add(y, 1);
}
StringBuilder sb = new StringBuilder();
sb.append(count).append("\n");
for (int i = 0; i < n - 1; i++) {
count -= n - bit.getSum(compress.get(values[i]));
count += bit.getSum(compress.get(values[i]) - 1);
sb.append(count).append("\n");
}
System.out.print(sb);
}
}
class BinaryIndexedTree {
int size;
int[] tree;
public BinaryIndexedTree(int size) {
this.size = size;
tree = new int[size];
}
public void add(int idx, int value) {
int mask = 1;
while (idx < size) {
if ((idx & mask) != 0) {
tree[idx] += value;
idx += mask;
}
mask <<= 1;
}
}
public int getSum(int from, int to) {
return getSum(to) - getSum(from - 1);
}
public int getSum(int x) {
int mask = 1;
int ans = 0;
while (x > 0) {
if ((x & mask) != 0) {
ans += tree[x];
x -= mask;
}
mask <<= 1;
}
return 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();
}
}
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