結果

問題 No.385 カップ麺生活
ユーザー tenten
提出日時 2023-06-13 18:02:34
言語 Java
(openjdk 23)
結果
AC  
実行時間 66 ms / 2,000 ms
コード長 2,371 bytes
コンパイル時間 2,880 ms
コンパイル使用メモリ 91,096 KB
実行使用メモリ 50,972 KB
最終ジャッジ日時 2024-06-22 03:38:39
合計ジャッジ時間 5,821 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 32
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
static final int MOD = 1000000007;
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int m = sc.nextInt();
int n = sc.nextInt();
int[] counts = new int[m + 1];
Arrays.fill(counts, -1);
counts[0] = 0;
for (int i = 0; i < n; i++) {
int x = sc.nextInt();
for (int j = 0; j + x <= m; j++) {
if (counts[j] < 0) {
continue;
}
counts[j + x] = Math.max(counts[j + x], counts[j] + 1);
}
}
long ans = 0;
boolean[] isNotPrimes = new boolean[m + 1];
for (int i = 2; i <= m; i++) {
if (!isNotPrimes[i]) {
if (counts[m - i] > 0) {
ans += counts[m - i];
}
for (int j = 2; j * i <= m; j++) {
isNotPrimes[j * i] = true;
}
}
}
Arrays.sort(counts);
System.out.println(ans + counts[m]);
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
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