結果
| 問題 | No.59 鉄道の旅 | 
| コンテスト | |
| ユーザー |  holeguma | 
| 提出日時 | 2015-10-02 22:53:38 | 
| 言語 | Java (openjdk 23) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 154 ms / 5,000 ms | 
| コード長 | 3,714 bytes | 
| コンパイル時間 | 2,795 ms | 
| コンパイル使用メモリ | 80,208 KB | 
| 実行使用メモリ | 56,220 KB | 
| 最終ジャッジ日時 | 2024-12-24 21:58:03 | 
| 合計ジャッジ時間 | 4,946 ms | 
| ジャッジサーバーID (参考情報) | judge2 / judge3 | 
(要ログイン)
| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 4 | 
| other | AC * 12 | 
ソースコード
import java.io.InputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Comparator;
import java.util.Deque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.InputMismatchException;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;
import java.util.TreeMap;
import java.math.BigDecimal;
import java.math.BigInteger;
    
public class Main{
 
static final InputStream in=System.in;
static final PrintWriter out=new PrintWriter(System.out);
static final int INF=Integer.MAX_VALUE;
static final long LINF=Long.MAX_VALUE;
static int N,K;
 
public static void main(String[] args) throws IOException{
InputReader ir=new InputReader(in);
BIT bit=new BIT(20);
N=ir.nextInt();
K=ir.nextInt();
while(N-->0){
 int x=ir.nextInt();
 if(x>0){
  if(bit.segmentsum(x,bit.SIZE)<K){
   bit.update(x,1);
  }
 }
 else{
  if(bit.get(-x)>0){
   bit.update(-x,-1);
  }
 }
}
out.println(bit.sum(bit.SIZE));
out.flush();
}
static class BIT{
 
 private long[] bit;
 public static int SIZE;
 public BIT(int n){
  bit=new long[1<<n+1];
  SIZE=1<<n;
 }
 public long sum(int i){
  long res=0;
  while(i>0){
   res+=bit[i];
   i-=i&-i;
  }
  return res;
 }
//[start,end)
 public long segmentsum(int start,int end){
  return sum(end)-sum(start);
 }
 public long get(int i){
  return sum(i+1)-sum(i);
 }
 public void update(int i,long x){
  i++;
  while(i<=SIZE){
   bit[i]+=x;
   i+=i&-i;
  }
 }
}
static class InputReader {
 private InputStream in;
 private byte[] buffer=new byte[1024];
 private int curbuf;
 private int lenbuf;
 
 public InputReader(InputStream in) {this.in=in; this.curbuf=this.lenbuf=0;}
  
 public boolean hasNextByte() {
  if(curbuf>=lenbuf){
   curbuf= 0;
   try{
    lenbuf=in.read(buffer);
   }catch(IOException e) {
    throw new InputMismatchException();
   }
   if(lenbuf<=0) return false;
  }
  return true;
 }
 
 private int readByte(){if(hasNextByte()) return buffer[curbuf++]; else return -1;}
 private boolean isSpaceChar(int c){return !(c>=33&&c<=126);}
 
 private void skip(){while(hasNextByte()&&isSpaceChar(buffer[curbuf])) curbuf++;}
 public boolean hasNext(){skip(); return hasNextByte();}
 
 public String next(){
  if(!hasNext()) throw new NoSuchElementException();
  StringBuilder sb=new StringBuilder();
  int b=readByte();
  while(!isSpaceChar(b)){
   sb.appendCodePoint(b);
   b=readByte();
  }
  return sb.toString();
 }
 
 public int nextInt() {
  if(!hasNext()) throw new NoSuchElementException();
  int c=readByte();
  while (isSpaceChar(c)) c=readByte();
  boolean minus=false;
  if (c=='-') {
   minus=true;
   c=readByte();
  }
  int res=0;
  do{
   if(c<'0'||c>'9') throw new InputMismatchException();
   res=res*10+c-'0';
   c=readByte();
  }while(!isSpaceChar(c));
  return (minus)?-res:res;
 }
 
 public long nextLong() {
  if(!hasNext()) throw new NoSuchElementException();
  int c=readByte();
  while (isSpaceChar(c)) c=readByte();
  boolean minus=false;
  if (c=='-') {
   minus=true;
   c=readByte();
  }
  long res = 0;
  do{
   if(c<'0'||c>'9') throw new InputMismatchException();
   res=res*10+c-'0';
   c=readByte();
  }while(!isSpaceChar(c));
  return (minus)?-res:res;
 }
 
 public double nextDouble(){return Double.parseDouble(next());}
 
 public BigInteger nextBigInteger(){return new BigInteger(next());}
 
 public int[] nextIntArray(int n){
  int[] a=new int[n];
  for(int i=0;i<n;i++) a[i]=nextInt();
  return a;
 }
 
 public char[][] nextCharMap(int n,int m){
  char[][] map=new char[n][m];
  for(int i=0;i<n;i++) map[i]=next().toCharArray();
  return map;
 }
}
}
            
            
            
        