#48534 (Java21) No.33 アメーバがたくさん

• 問題: No.33 アメーバがたくさん
• ユーザー: holeguma
• 提出日時: 2015-09-08 05:20:19
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 56 ms / 5,000 ms
• コード長: 3,225 bytes
• コンパイル時間: 2,434 ms
• コンパイル使用メモリ: 80,864 KB
• 実行使用メモリ: 50,696 KB
• 最終ジャッジ日時: 2024-09-24 10:25:53
• 合計ジャッジ時間: 3,613 ms
• ジャッジサーバーID （参考情報）: judge4 / judge2

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	53 ms; 50,512 KB
testcase_01	AC	54 ms; 50,564 KB
testcase_02	AC	54 ms; 50,628 KB
testcase_03	AC	54 ms; 50,696 KB
testcase_04	AC	53 ms; 50,516 KB
testcase_05	AC	53 ms; 50,508 KB
testcase_06	AC	55 ms; 50,548 KB
testcase_07	AC	54 ms; 50,540 KB
testcase_08	AC	54 ms; 50,284 KB
testcase_09	AC	56 ms; 50,540 KB
testcase_10	AC	55 ms; 50,200 KB

ソースコード

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
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.PriorityQueue;
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/2;
static final long LINF=Long.MAX_VALUE/2;
static int N,D,T;
static int[] X;

public static void main(String[] args) throws IOException{
InputReader ir=new InputReader(in);
N=ir.nextInt();
D=ir.nextInt();
T=ir.nextInt();
X=ir.toIntArray(N);
Arrays.sort(X);
HashMap<Integer,Long> map=new HashMap<Integer,Long>();
BigInteger ans=BigInteger.ZERO;
for(int i=0;i<N;i++){
int remainder=X[i]%D;
if(remainder<0) remainder+=D;
long right=(long)X[i]+(long)D*T,left=(long)X[i]-(long)D*T;
if(!map.containsKey(remainder)){
ans=ans.add(BigInteger.valueOf(T).multiply(BigInteger.valueOf(2)).add(BigInteger.ONE));
map.put(remainder,right);
}
else if(map.get(remainder)>=left){
ans=ans.add(BigInteger.valueOf(T).multiply(BigInteger.valueOf(2)).subtract((BigInteger.valueOf(map.get(remainder)).subtract(BigInteger.valueOf(left))).divide(BigInteger.valueOf(D))));
map.put(remainder,right);
}
else{
ans=ans.add(BigInteger.valueOf(T).multiply(BigInteger.valueOf(2)).add(BigInteger.ONE));
map.put(remainder,right);
}
}
out.println(ans);
out.flush();
}

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;}
  
public int readByte() {
if(lenbuf==-1) throw new InputMismatchException();
if(curbuf>=lenbuf){
curbuf= 0;
try{
lenbuf=in.read(buffer);
}
catch (IOException e) {
throw new InputMismatchException();
}
if(lenbuf<=0)
return -1;
}
return buffer[curbuf++];
}

public boolean isSpaceChar(int c){return !(c>=33&&c<=126);}

private int skip() {int b; while((b = readByte())!=-1&&isSpaceChar(b)); return b;}

public String next() {
int b=skip();
StringBuilder sb=new StringBuilder();
while(!isSpaceChar(b)){
sb.appendCodePoint(b);
b=readByte();
}
return sb.toString();
}
 
public int nextInt() {
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() {
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[] toIntArray(int n){
int[] a=new int[n];
for(int i=0;i<n;i++) a[i]=nextInt();
return a;
}
}
}