백준 2293 동전 1

💻Q

2293번: 동전 1

 

💡A

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

public class Main {

	public static void main(String[] args) throws IOException {
		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[] arr = new int[n + 1];
		int[] dp = new int[k + 1];
		dp[0] = 1;
		
		for(int i=0; i<n; i++) {
			arr[i] = Integer.parseInt(br.readLine());
			for(int j=arr[i]; j<=k; j++) {
				dp[j] += dp[j - arr[i]];
			}
		}
		System.out.println(dp[k]);
	}
}​