結果
| 問題 |
No.2334 Distinct Cards
|
| コンテスト | |
| ユーザー |
 Asahi
|
| 提出日時 | 2023-06-03 01:16:21 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 330 ms / 2,000 ms |
| コード長 | 5,817 bytes |
| コンパイル時間 | 3,543 ms |
| コンパイル使用メモリ | 84,960 KB |
| 実行使用メモリ | 64,732 KB |
| 最終ジャッジ日時 | 2024-12-29 02:02:50 |
| 合計ジャッジ時間 | 7,921 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 22 |
ソースコード
import java.util.*;
import java.io.*;
class Main{
void solve(PrintWriter out, In in) {
int n = in.nextInt() , k = in.nextInt();
int [] A = in.IntArray(n);
ArrayList<Pair> pair = new ArrayList<>();
HashMap<Integer,Integer> mp = new HashMap<>();
for(int i = 0 ; i < n ; i ++ ) {
mp.put(A[i],mp.getOrDefault(A[i],0)+1);
}
for(int v : mp.keySet()) {
pair.add(new Pair(v,mp.get(v)));
}
Collections.sort(pair,Comparator.comparing(Pair::second,Comparator.reverseOrder()));
HashSet<Integer> s = new HashSet<>();
int num = 0 ;
for(int i = 0 ; i < pair.size() ; i ++ ) {
int min = Math.min(k-num,pair.get(i).second());
if(min == 0) break;
if(num + min <= k) {
num += min;
s.add(pair.get(i).first());
}
}
out.print(s.size());
}
/* Library */
/* ------- */
public static void main(String[] args) {
PrintWriter out = new PrintWriter(System.out);
In in = new In();
new Main().solve(out,in);
out.flush();
}
final long MOD7 = 1000000007; final long MOD9 = 998244353 ;
final int [] X4 = {0,1,0,-1}; final int [] Y4 = {-1,0,1,0};
final int [] X8 = {-1,-1,0,1,1,1,0,-1}; final int [] Y8 = {0,1,1,1,0,-1,-1,-1};
final int Inf = (int)1e9; final long Lnf = (long)1e18;
final String yes = "Yes"; final String no = "No";
}
/* Class */
/* ----- */
class Pair{
private int first ;
private int second;
Pair(int first,int second) {
this.first = first;
this.second = second;
}
int first() { return this.first ; }
int second() { return this.second; }
@Override
public String toString(){ return first()+" = "+second(); }
}
class PairII {
private int first ;
private int second ;
private int third;
PairII(int first, int second, int third) {
this.first = first;
this.second = second;
this.third = third;
}
int first() { return this.first ; }
int second() { return this.second; }
int third() { return this.third ; }
@Override
public String toString(){ return first()+" = "+second()+" = "+third() ; }
}
class In{
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;
}
public boolean hasNext() {
while(hasNextByte() && !isPrintableChar(buffer[ptr])) {
ptr++;
}
return hasNextByte();
}
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();
}
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();
}
}
int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
double nextDouble() {
return Double.parseDouble(next());
}
int [] IntArray(int n) {
final int [] Array = new int [n];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = nextInt();
}
return Array;
}
int [][] IntArray(int n , int m) {
final int [][] Array = new int [n][m];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = IntArray(m);
}
return Array;
}
long [] LongArray(int n) {
final long [] Array = new long [n];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = nextLong();
}
return Array;
}
long [][] LongArray(int n , int m) {
final long [][] Array = new long [n][m];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = LongArray(m);
}
return Array;
}
String [] StringArray(int n) {
final String [] Array = new String [n];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = next();
}
return Array;
}
char [] CharArray(int n) {
final char [] Array = new char[n];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = next().charAt(0);
}
return Array;
}
char [][] CharArray(int n , int m) {
final char [][] Array = new char [n][m];
for(int i = 0 ; i < n ; i ++ ) {
Array[i] = next().toCharArray();
}
return Array;
}
}