結果
| 問題 |
No.370 道路の掃除
|
| コンテスト | |
| ユーザー |
Suunn
|
| 提出日時 | 2019-02-22 09:24:48 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 54 ms / 2,000 ms |
| コード長 | 3,552 bytes |
| コンパイル時間 | 5,035 ms |
| コンパイル使用メモリ | 77,340 KB |
| 実行使用メモリ | 50,260 KB |
| 最終ジャッジ日時 | 2024-11-23 17:29:59 |
| 合計ジャッジ時間 | 7,953 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 34 |
ソースコード
import java.io.IOException;
import java.util.Arrays;
import java.util.NoSuchElementException;
public class Main{
static long dp[] = new long[51];
public static void main(String[] args){
FastScanner sc = new FastScanner();
int K = sc.nextInt();
int N = sc.nextInt();
int[] x = new int[N];
int[] L = new int[N+1];
int[] R = new int[N+1];
int l = 1;
int r = 1;
Arrays.fill(L, 123456789);
L[0] = 0;
R[0] = 0;
for(int i=0;i<N;i++){
x[i] = sc.nextInt();
}
Arrays.sort(x);
for(int i=0;i<N;i++) {
if(x[i] == 0) {
K --;
}else if(x[i]<0) {
L[l] = 0 - x[i];
l ++;
}else {
R[r] = x[i];
r ++;
}
}
Arrays.sort(L);
int min = 400000000;
int kyori = 0;
for(int i=0;i<=K;i++) {
if(i<l && K-i<r) {
kyori = L[i] + R[K-i] + Math.min(L[i],R[K-i]);
min = Math.min(min, kyori);
}
}
if(min == 400000000) {
min = 0;
}
System.out.println(min);
}
}
class FastScanner {
private final java.io.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();
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 (int) (minus ? -n : n);
}else{
throw new NumberFormatException();
}
b = readByte();
}
}
}
Suunn