結果
問題 | No.320 眠れない夜に |
ユーザー |
|
提出日時 | 2015-12-13 00:43:06 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 55 ms / 2,000 ms |
コード長 | 2,324 bytes |
コンパイル時間 | 4,095 ms |
コンパイル使用メモリ | 78,576 KB |
実行使用メモリ | 37,340 KB |
最終ジャッジ日時 | 2024-09-15 10:56:16 |
合計ジャッジ時間 | 6,751 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge6 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 31 |
ソースコード
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.Iterator; public class Main_yukicoder320 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Printer pr = new Printer(System.out); int n = sc.nextInt(); long m = sc.nextLong(); long[] a = new long[n + 1]; a[1] = 1; a[2] = 1; for (int i = 3; i <= n; i++) { a[i] = a[i - 1] + a[i - 2]; } long[] diff = new long[n + 1]; for (int j = 3; j <= n; j++) { long[] b = new long[n + 1]; b[1] = 1; b[2] = 1; for (int i = 3; i <= n; i++) { b[i] = b[i - 1] + b[i - 2]; if (i == j) { b[i]--; } } diff[j] = a[n] - b[n]; } long d = a[n] - m; int cnt = 0; for (int i = 3; i <= n; i++) { if (d - diff[i] >= 0) { d -= diff[i]; cnt++; } } if (d != 0) { pr.println(-1); } else { pr.println(cnt); } pr.close(); sc.close(); } @SuppressWarnings("unused") private static class Scanner { BufferedReader br; Iterator<String> it; Scanner (InputStream in) { br = new BufferedReader(new InputStreamReader(in)); } String next() throws RuntimeException { try { if (it == null || !it.hasNext()) { it = Arrays.asList(br.readLine().split(" ")).iterator(); } return it.next(); } catch (IOException e) { throw new IllegalStateException(); } } int nextInt() throws RuntimeException { return Integer.parseInt(next()); } long nextLong() throws RuntimeException { return Long.parseLong(next()); } float nextFloat() throws RuntimeException { return Float.parseFloat(next()); } double nextDouble() throws RuntimeException { return Double.parseDouble(next()); } void close() { try { br.close(); } catch (IOException e) { // throw new IllegalStateException(); } } } private static class Printer extends PrintWriter { Printer(PrintStream out) { super(out); } } }