結果
問題 | No.2017 Mod7 Parade |
ユーザー |
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提出日時 | 2023-03-29 10:06:14 |
言語 | Java (openjdk 23) |
結果 |
RE
|
実行時間 | - |
コード長 | 2,794 bytes |
コンパイル時間 | 2,899 ms |
コンパイル使用メモリ | 89,272 KB |
実行使用メモリ | 58,940 KB |
最終ジャッジ日時 | 2024-09-21 03:51:37 |
合計ジャッジ時間 | 14,734 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 17 RE * 1 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {static final int MOD = 1000000007;public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int[] counts = new int[7];for (int i = 0; i < n; i++) {int d = sc.nextInt();int length = sc.nextInt();int p = pow7(3, length);int v = order7(d, length);int[] next = new int[7];for (int j = 0; j < 7; j++) {next[(j * p + v) % 7] += counts[j];next[(j * p + v) % 7] %= MOD;}next[v]++;for (int j = 0; j < 7; j++) {counts[j] += next[j];counts[j] %= MOD;}}long ans = 0;for (int i = 1; i < 7; i++) {ans += counts[i] * (long)i % MOD;ans %= MOD;}System.out.println(ans);}static int order7(int x, int length) {if (length == 1) {return x;} else if (length % 2 == 0) {int v = order7(x, length / 2);return (v * pow7(3, length / 2) + v) % 7;} else {return (order7(x, length - 1) * 10 + x) % 7;}}static int pow7(int x, int p) {if (p == 0) {return 1;} else if (p % 2 == 0) {return pow7(x * x % 7, p / 2);} else {return pow7(x, p - 1) * x % 7;}}}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();}}