[BOJ] 2293 동전 1 (JAVA)

https://www.acmicpc.net/problem/2293

2293번: 동전 1

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
        int n = Integer.parseInt(st.nextToken());
        int k = Integer.parseInt(st.nextToken());
        int[] input = new int[n];
        int[] dp = new int[k + 1];
        for (int i = 0; i < n; i++) {
            input[i] = Integer.parseInt(br.readLine());
        } // end of input

        dp[0] = 1;

        for (int i = 0; i < n; i++) {
            for (int j = 1; j <= k; j++) {
                if (0 <= j - input[i]) dp[j] += dp[j - input[i]];
            }
        }

        System.out.print(dp[k]);

    }
	
}