結果
| 問題 |
No.390 最長の数列
|
| コンテスト | |
| ユーザー |
nCk_cv
|
| 提出日時 | 2016-07-13 16:58:11 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,565 bytes |
| コンパイル時間 | 2,265 ms |
| コンパイル使用メモリ | 77,980 KB |
| 実行使用メモリ | 58,124 KB |
| 最終ジャッジ日時 | 2024-10-14 15:41:54 |
| 合計ジャッジ時間 | 5,406 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 * 4 |
| other | AC * 7 WA * 8 |
ソースコード
import java.io.*;
import java.math.*;
import java.util.*;
import java.util.Map.Entry;
class Main {
static int[] vy = {1,0,-1,0};
static int[] vx = {0,1,0,-1};
static long mod = 1000000007;
static HashMap<String,Boolean> map = new HashMap<String,Boolean>();
public static void main(String[] args) {
FastScanner sc = new FastScanner();
//Scanner sc = new Scanner(System.in);
int N = sc.nextInt();
int[] x = new int[N];
for(int i = 0; i < N; i++) {
x[i] = sc.nextInt();
}
Arrays.sort(x);
int[] dp = new int[1000001];
for(int i = 0; i < N; i++) {
for(int j = 2; ; j++) {
if(x[i] * j >= dp.length) break;
dp[x[i] * j] = Math.max(dp[x[i]]+1,dp[x[i] * j]);
}
if(dp[x[i]] == 0) dp[x[i]]++;
}
int max = 0;
for(int i = 0; i < x.length; i++) {
if(x[i] * 2 >= dp.length) break;
max = Math.max(max, dp[x[i]*2]);
}
System.out.println(max);
}
static class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
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;}
private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;}
public boolean hasNext() { skipUnprintable(); 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() {
if (!hasNext()) throw new NoSuchElementException();
int 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();
}
}
}
}
nCk_cv