結果
| 問題 |
No.472 平均順位
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-08-04 18:46:09 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 594 ms / 2,000 ms |
| コード長 | 3,572 bytes |
| コンパイル時間 | 1,943 ms |
| コンパイル使用メモリ | 81,948 KB |
| 実行使用メモリ | 45,352 KB |
| 最終ジャッジ日時 | 2024-07-08 13:35:12 |
| 合計ジャッジ時間 | 7,049 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 |
ソースコード
import java.util.*;
import java.io.*;
public class Main {
public static void main(String[] args) {
FastScanner sc = new FastScanner();
int n = sc.nextInt();
int p = sc.nextInt();
int[] a = new int[n];
int[] b = new int[n];
int[] c = new int[n];
for (int i = 0; i < n; i++) {
a[i] = sc.nextInt();
b[i] = sc.nextInt();
c[i] = sc.nextInt();
}
int[] current = new int[p + 1];
int[] next = new int[p + 1];
for (int i = 1; i <= n; i++) {
for (int j = 0; j <= p; j++) {
next[j] = current[j] + a[i - 1];
if (j - 1 >= 0) {
// dp[i][j] = Math.min(dp[i][j], dp[i - 1][j - 1] + b[i - 1]);
next[j] = Math.min(next[j], current[j - 1] + b[i - 1]);
}
if (j - 2 >= 0) {
next[j] = Math.min(next[j], current[j - 2] + c[i - 1]);
}
if (j - 3 >= 0) {
next[j] = Math.min(next[j], current[j - 3] + 1);
}
}
current = (int[]) next.clone();
}
// System.out.println(Arrays.toString(next));
float ans = next[p] / (float) n;
System.out.printf("%.5f%n", ans);
}
}
class FastScanner {
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();
}
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() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() {
return Double.parseDouble(next());
}
}