結果
| 問題 |
No.1890 Many Sequences Sum Queries
|
| ユーザー |
tenten
|
| 提出日時 | 2022-04-06 10:24:56 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 310 ms / 2,000 ms |
| コード長 | 2,035 bytes |
| コンパイル時間 | 2,081 ms |
| コンパイル使用メモリ | 78,948 KB |
| 実行使用メモリ | 50,508 KB |
| 最終ジャッジ日時 | 2024-11-27 17:42:52 |
| 合計ジャッジ時間 | 6,671 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 25 |
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 q = sc.nextInt();
int[] values = new int[n];
int[] counts = new int[n + 1];
TreeMap<Long, Integer> map = new TreeMap<>();
long prev = 0;
for (int i = 0; i < n; i++) {
map.put(prev, i);
values[i] = sc.nextInt();
prev += (long)values[i] * (values[i] + 1) / 2;
counts[i + 1] = counts[i] + values[i];
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < q; i++) {
long s = sc.nextInt();
if (prev < s) {
sb.append("-1\n");
continue;
}
long current = map.lowerKey(s);
int idx = map.get(current);
int x = counts[idx];
long left = 0;
long right = values[idx];
while (right - left > 1) {
long m = (left + right) / 2;
if (m * (m + 1) / 2 + current < s) {
left = m;
} else {
right = m;
}
}
sb.append(x + right).append("\n");
}
System.out.print(sb);
}
}
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 {
if (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten