結果
| 問題 |
No.120 傾向と対策:門松列(その1)
|
| コンテスト | |
| ユーザー |
t8m8⛄️
|
| 提出日時 | 2015-03-12 20:05:27 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 208 ms / 5,000 ms |
| コード長 | 4,272 bytes |
| コンパイル時間 | 4,709 ms |
| コンパイル使用メモリ | 80,632 KB |
| 実行使用メモリ | 43,376 KB |
| 最終ジャッジ日時 | 2024-06-24 18:40:22 |
| 合計ジャッジ時間 | 5,683 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 * 4 |
ソースコード
//No.120 傾向と対策:門松列(その1)
import java.util.*;
import java.io.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;
public class No120 {
static final InputStream in = System.in;
static final PrintWriter out = new PrintWriter(System.out,false);
static void solve(){
int t = nextInt();
for (int d=0; d<t; d++) {
int n = nextInt();
HashMap<Integer,Integer> map = new HashMap<Integer,Integer>();
PriorityQueue<Integer> pq = new PriorityQueue<Integer>(new Comparator<Integer>(){
public int compare(Integer a, Integer b) { return b - a; }
});
for (int i=0; i<n; i++) {
int l = nextInt();
Integer a = map.get(l);
map.put(l,a==null?1:a+1);
}
for (int key : map.keySet())
pq.add(map.get(key));
int cnt = 0;
while (pq.size() >= 3) {
cnt++;
int a = pq.poll();
int b = pq.poll();
int c = pq.poll();
if (a > 1) pq.add(--a);
if (b > 1) pq.add(--b);
if (c > 1) pq.add(--c);
}
out.println(cnt);
}
}
public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
solve();
out.flush();
long end = System.currentTimeMillis();
//trace(end-start + "ms");
in.close();
}
static void trace(Object... o) { System.out.println(deepToString(o));}
static final byte[] buf = new byte[1024];
static int ptr = 0;
static int buflen = 0;
static boolean hasNextByte() {
if (ptr < buflen)
return true;
ptr = 0;
try{
buflen = in.read(buf);
}catch (IOException e) {e.printStackTrace();}
if (buflen <= 0)
return false;
return true;
}
static int readByte() { if (hasNextByte()) return buf[ptr++]; else return -1;}
static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
static void skip() { while(hasNextByte() && !isPrintableChar(buf[ptr])) ptr++;}
static boolean hasNext() {skip(); return hasNextByte();}
static 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();
}
static long nextLong() {
if (!hasNext()) throw new NoSuchElementException();
boolean minus = false;
long num = readByte();
if(num == '-'){
num = 0;
minus = true;
}else if (num < '0' || '9' < num){
throw new NumberFormatException();
}else{
num -= '0';
}
while(true){
int b = readByte();
if('0' <= b && b <= '9')
num = num * 10 + (b - '0');
else if(b == -1 || !isPrintableChar(b))
return minus ? -num : num;
else
throw new NoSuchElementException();
}
}
static int nextInt() {
long num = nextLong();
if (num < Integer.MIN_VALUE || Integer.MAX_VALUE < num)
throw new NumberFormatException();
return (int)num;
}
static double nextDouble() {
return Double.parseDouble(next());
}
static char nextChar() {
if (!hasNext()) throw new NoSuchElementException();
return (char)readByte();
}
static String nextLine() {
while (hasNextByte() && (buf[ptr] == '\n' || buf[ptr] == '\r')) ptr++;
if (!hasNextByte()) throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while (b != '\n' && b != '\r') {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
static int[] nextArrayInt(int n) {
int[] a = new int[n];
for (int i=0; i<n; i++) a[i] = nextInt();
return a;
}
}
t8m8⛄️