結果
| 問題 |
No.1058 素敵な数
|
| コンテスト | |
| ユーザー |
jp_ste
|
| 提出日時 | 2020-06-05 11:48:05 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 72 ms / 2,000 ms |
| コード長 | 3,075 bytes |
| コンパイル時間 | 3,740 ms |
| コンパイル使用メモリ | 81,324 KB |
| 実行使用メモリ | 51,244 KB |
| 最終ジャッジ日時 | 2024-12-15 06:39:11 |
| 合計ジャッジ時間 | 5,251 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 9 |
ソースコード
package No1058;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.NoSuchElementException;
public class Main {
static FastScanner in = new FastScanner(System.in);
static PrintWriter out = new PrintWriter(System.out);
public static void main(String[] args) {
int N = in.nextInt();
ArrayList<Long> sutekiList = sutekiList(primeList());
out.println(sutekiList.get(N-1));
out.close();
}
static long[] primeList() {
int number = 100001;
int count = 0;
long[] result = new long[10];
while(true) {
if(isPrime(number)) {
result[count] = number;
count++;
if(count >= 10) break;
}
number++;
}
return result;
}
static ArrayList<Long> sutekiList(long[] primeList) {
ArrayList<Long> result = new ArrayList<>();
result.add(1L);
for(int i=0; i<primeList.length; i++) {
for(int j=i; j<primeList.length; j++) {
result.add(primeList[i] * primeList[j]);
}
}
Collections.sort(result);
return result;
}
static boolean isPrime(int n) {
if(n == 1) return false;
for(int i=2; i<n; i++) {
if(n % i == 0) return false;
}
return true;
}
static class FastScanner {
private InputStream in = null;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
FastScanner(InputStream inStream) {
in = inStream;
}
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());
}
}
}
jp_ste