백준) 11052_카드 구매하기

https://www.acmicpc.net/problem/11052

11052번: 카드 구매하기

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
 
public class Main {
 
    static int N;
    static int[] arr;
    static int[] dp;
 
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        N = Integer.parseInt(br.readLine());
        arr = new int[N + 1];
        dp = new int[N + 1];
 
        StringTokenizer st = new StringTokenizer(br.readLine());
        for (int i = 1; i <= N; i++) {
            arr[i] = Integer.parseInt(st.nextToken());
        }
        System.out.println(search());
    }
 
    static int search() {
 
        for (int i = 1; i <= N; i++) {
            for (int j = 1; j <= i; j++) {
                dp[i] = Math.max(dp[i], dp[i - j] + arr[j]);
            }
        }
        return dp[N];
    }
}