結果
問題 | No.314 ケンケンパ |
ユーザー | Tsukasa_Type |
提出日時 | 2018-03-10 20:38:53 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 68 ms / 1,000 ms |
コード長 | 2,213 bytes |
コンパイル時間 | 2,359 ms |
コンパイル使用メモリ | 77,732 KB |
実行使用メモリ | 45,184 KB |
最終ジャッジ日時 | 2024-04-22 18:26:25 |
合計ジャッジ時間 | 4,266 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
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 | 68 ms
45,008 KB |
testcase_01 | AC | 49 ms
36,616 KB |
testcase_02 | AC | 49 ms
36,836 KB |
testcase_03 | AC | 48 ms
36,764 KB |
testcase_04 | AC | 48 ms
36,404 KB |
testcase_05 | AC | 49 ms
36,604 KB |
testcase_06 | AC | 48 ms
36,780 KB |
testcase_07 | AC | 48 ms
36,780 KB |
testcase_08 | AC | 48 ms
36,576 KB |
testcase_09 | AC | 48 ms
36,620 KB |
testcase_10 | AC | 49 ms
36,680 KB |
testcase_11 | AC | 48 ms
36,576 KB |
testcase_12 | AC | 49 ms
36,812 KB |
testcase_13 | AC | 50 ms
36,272 KB |
testcase_14 | AC | 49 ms
36,864 KB |
testcase_15 | AC | 48 ms
36,864 KB |
testcase_16 | AC | 49 ms
36,924 KB |
testcase_17 | AC | 52 ms
37,168 KB |
testcase_18 | AC | 66 ms
41,496 KB |
testcase_19 | AC | 65 ms
45,184 KB |
ソースコード
import java.io.*; import java.util.*; import static java.lang.System.*; public class Main { static FastScanner sc = new FastScanner(System.in); public static void main(String[] args) { int n = sc.nextInt(); long[] dp = new long[n+1]; if (n == 1) {out.println(1); return;} if (n == 2) {out.println(2); return;} dp[1] = 1; dp[2] = 2; dp[3] = 2; for (int i=4; i<=n; i++) { dp[i] = (dp[i-2]+dp[i-3]) % 1000000007; } out.println(dp[n]); } } class FastScanner implements Closeable { private final InputStream in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; public FastScanner(InputStream in) {this.in = in;} private boolean hasNextByte() { if (ptr < buflen) {return true;} else{ ptr = 0; try {buflen = in.read(buffer);} catch (IOException e) {e.printStackTrace();} if (buflen <= 0) {return false;} } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) {throw new NumberFormatException();} while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){return minus ? -n : n;} else{throw new NumberFormatException();} b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next());} public void close() { try {in.close();} catch (IOException e) {} } }