結果
| 問題 |
No.1299 Random Array Score
|
| コンテスト | |
| ユーザー |
shojin_pro
|
| 提出日時 | 2020-11-27 22:36:44 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,996 bytes |
| コンパイル時間 | 3,512 ms |
| コンパイル使用メモリ | 78,816 KB |
| 実行使用メモリ | 63,972 KB |
| 最終ジャッジ日時 | 2024-07-26 18:57:32 |
| 合計ジャッジ時間 | 19,769 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 * 2 WA * 1 |
| other | AC * 3 WA * 31 |
ソースコード
import java.util.*;
import java.io.*;
public class Main {
public static void main(String[] args) throws Exception {
FastScanner sc = new FastScanner(System.in);
PrintWriter pw = new PrintWriter(System.out);
int n = sc.nextInt();
long mod = 998244353L;
long k = sc.nextLong() % mod;
long[] a = sc.nextLongArray(n);
long total = 0;
for(int i = 0; i < n; i++){
total += a[i]*rep2(2,(k*(k+1))/2, mod);
total %= mod;
}
pw.println(total);
pw.flush();
}
private static long rep2(long b, long n, long mod){
if(n == 0) return 1;
long bn = rep2(b,n/2,mod);
if(n % 2 == 0){
return (bn*bn)%mod;
}else{
return (bn*bn)%mod*b%mod;
}
}
static class GeekInteger {
public static void save_sort(int[] array) {
shuffle(array);
Arrays.sort(array);
}
public static int[] shuffle(int[] array) {
int n = array.length;
Random random = new Random();
for (int i = 0, j; i < n; i++) {
j = i + random.nextInt(n - i);
int randomElement = array[j];
array[j] = array[i];
array[i] = randomElement;
}
return array;
}
}
}
class FastScanner {
private BufferedReader reader = null;
private StringTokenizer tokenizer = null;
public FastScanner(InputStream in) {
reader = new BufferedReader(new InputStreamReader(in));
tokenizer = null;
}
public String next() {
if (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
tokenizer = new StringTokenizer(reader.readLine());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}
public String nextLine() {
if (tokenizer == null || !tokenizer.hasMoreTokens()) {
try {
return reader.readLine();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return tokenizer.nextToken("\n");
}
public long nextLong() {
return Long.parseLong(next());
}
public int nextInt() {
return Integer.parseInt(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String[] nextArray(int n) {
String[] a = new String[n];
for (int i = 0; i < n; i++)
a[i] = next();
return a;
}
public int[] nextIntArray(int n) {
int[] a = new int[n];
for (int i = 0; i < n; i++)
a[i] = nextInt();
return a;
}
public long[] nextLongArray(int n) {
long[] a = new long[n];
for (int i = 0; i < n; i++)
a[i] = nextLong();
return a;
}
}
shojin_pro