[백준] 16493 최대 페이지 수 - Dynamic Programming / Java

• 문제 링크

16493번: 최대 페이지 수

 

• 풀이 과정

 

• 풀이 코드

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st = new StringTokenizer(br.readLine());

        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());

        int[] dp = new int[n + 1];

        while (m-- > 0) {
            st = new StringTokenizer(br.readLine());
            int day = Integer.parseInt(st.nextToken());
            int page = Integer.parseInt(st.nextToken());

            for (int i = n; i >= day; i--)
                dp[i] = Math.max(dp[i], dp[i - day] + page);
        }

        bw.write(String.valueOf(dp[n]));
        bw.flush();
    }

}