結果
| 問題 |
No.45 回転寿司
|
| ユーザー |
Cavasiro
|
| 提出日時 | 2020-05-02 18:34:24 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 64 ms / 5,000 ms |
| コード長 | 3,325 bytes |
| コンパイル時間 | 2,920 ms |
| コンパイル使用メモリ | 78,816 KB |
| 実行使用メモリ | 52,356 KB |
| 最終ジャッジ日時 | 2024-12-30 22:57:39 |
| 合計ジャッジ時間 | 6,470 ms |
|
ジャッジサーバーID (参考情報) |
judge6 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 30 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.NoSuchElementException;
class Main implements Runnable {
private final FastScanner sc;
private final PrintWriter out;
//private final long MOD = 1000000007;
//private final int[] d8x = {-1,0,1,1,1,0,-1,-1};
//private final int[] d8y = {-1,-1,-1,0,1,1,1,0};
//private final int[] d4x = {0,1,0,-1};
//private final int[] d4y = {-1,0,1,0};
int n;
int[] v;
public static void main(String[] args) {
new Thread(null, new Main(), "", 16L * 1024 * 1024).start();
}
Main() {
sc = new FastScanner();
out = new PrintWriter(System.out);
}
private void init() throws Exception {
n = sc.nextInt();
v = new int[n];
for(int i = 0;i<n;i++){
v[i] = sc.nextInt();
}
}
private void solve() throws Exception{
int[] dp = new int[n+1];
dp[0] = 0;
dp[1] = v[0];
for(int i=2;i<=n;i++){
dp[i] = Math.max(dp[i-1], dp[i-2] + v[i-1]);
}
out.println(dp[n]);
}
public void run() {
try {
init();
sc.close();
solve();
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
out.flush();
out.close();
}
}
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 read() {
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 boolean hasNext() {
while (read() && !isVisibleChar(buffer[ptr]))
ptr++;
return read();
}
private int getNextChar() {
if (read()) {
ptr++;
return buffer[ptr - 1];
} else {
return -1;
}
}
private static boolean isVisibleChar(int code) {
return code >= 33 && code <= 126;
}
public String next() {
if (!hasNext())
throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = getNextChar();
while (isVisibleChar(b)) {
sb.appendCodePoint(b);
b = getNextChar();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext())
throw new NoSuchElementException();
long n = 0;
boolean sign = true;
int b = getNextChar();
if (b == '-') {
sign = false;
b = getNextChar();
}
if (b < '0' || b > '9') {
throw new NumberFormatException();
}
while (true) {
if (b >= '0' && b <= '9') {
n *= 10;
n += b - '0';
} else if (b == -1 || !isVisibleChar(b)) {
return sign ? n : -n;
} else {
throw new NumberFormatException();
}
b = getNextChar();
}
}
public int nextInt() {
long n = nextLong();
if (n < Integer.MIN_VALUE || n > Integer.MAX_VALUE)
throw new NumberFormatException();
return (int) n;
}
public double nextDouble() {
return Double.parseDouble(next());
}
public void close() {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
class IntQueue {
protected int[] a;
protected int head, tail;
public IntQueue(int max) {
a = new int[max];
}
public void offer(int x) {
a[tail++] = x;
}
public int poll() {
return a[head++];
}
public int peek() {
return a[head];
}
public int size() {
return tail - head;
}
}
Cavasiro