結果

問題 No.1299 Random Array Score
ユーザー shojin_proshojin_pro
提出日時 2020-11-28 19:26:39
言語 Java21
(openjdk 21)
結果
AC  
実行時間 640 ms / 2,000 ms
コード長 2,981 bytes
コンパイル時間 2,802 ms
コンパイル使用メモリ 79,056 KB
実行使用メモリ 63,736 KB
最終ジャッジ日時 2024-09-12 23:27:38
合計ジャッジ時間 17,868 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 53 ms
50,288 KB
testcase_01 AC 54 ms
50,136 KB
testcase_02 AC 53 ms
50,584 KB
testcase_03 AC 640 ms
63,408 KB
testcase_04 AC 627 ms
63,448 KB
testcase_05 AC 524 ms
57,808 KB
testcase_06 AC 494 ms
57,912 KB
testcase_07 AC 515 ms
57,952 KB
testcase_08 AC 599 ms
62,716 KB
testcase_09 AC 114 ms
52,248 KB
testcase_10 AC 370 ms
56,108 KB
testcase_11 AC 179 ms
54,784 KB
testcase_12 AC 501 ms
58,264 KB
testcase_13 AC 627 ms
63,736 KB
testcase_14 AC 493 ms
58,120 KB
testcase_15 AC 500 ms
57,892 KB
testcase_16 AC 517 ms
58,064 KB
testcase_17 AC 247 ms
55,724 KB
testcase_18 AC 374 ms
56,084 KB
testcase_19 AC 416 ms
58,148 KB
testcase_20 AC 316 ms
56,560 KB
testcase_21 AC 107 ms
52,076 KB
testcase_22 AC 282 ms
55,700 KB
testcase_23 AC 486 ms
57,816 KB
testcase_24 AC 532 ms
58,036 KB
testcase_25 AC 478 ms
57,744 KB
testcase_26 AC 104 ms
52,368 KB
testcase_27 AC 280 ms
55,608 KB
testcase_28 AC 219 ms
55,260 KB
testcase_29 AC 259 ms
56,004 KB
testcase_30 AC 465 ms
58,252 KB
testcase_31 AC 300 ms
56,360 KB
testcase_32 AC 622 ms
63,500 KB
testcase_33 AC 616 ms
63,584 KB
testcase_34 AC 546 ms
58,436 KB
testcase_35 AC 293 ms
63,256 KB
testcase_36 AC 206 ms
58,368 KB
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ソースコード

diff #

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();
        long[] a = sc.nextLongArray(n);
        long total = 0;
        for(int i = 0; i < n; i++){
            total += a[i]*rep2(2, k, 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;
    } 
}
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