Merge pull request #1029 from AlgorithmWithGod/zinnnn37

[20251003] BOJ / G5 / 동전 2 / 김민진

Author: ShinHeeEul

zinnnn37/202510/3 BOJ G5 동전 2.md

@@ -0,0 +1,54 @@
+```java
+package etc;
+
+import java.io.*;
+import java.util.Arrays;
+import java.util.StringTokenizer;
+
+public class BJ_2294_동전_2 {
+
+	private static final int INF = 987654321;
+
+	private static final BufferedReader  br = new BufferedReader(new InputStreamReader(System.in));
+	private static final BufferedWriter  bw = new BufferedWriter(new OutputStreamWriter(System.out));
+	private static       StringTokenizer st;
+
+	private static int N, K;
+	private static int[] coins, dp;
+
+	public static void main(String[] args) throws IOException {
+		init();
+		sol();
+	}
+
+	private static void init() throws IOException {
+		st = new StringTokenizer(br.readLine());
+		N  = Integer.parseInt(st.nextToken());
+		K  = Integer.parseInt(st.nextToken());
+
+		coins = new int[N + 1];
+		for (int i = 1; i <= N; i++) {
+			coins[i] = Integer.parseInt(br.readLine());
+		}
+
+		dp = new int[K + 1];
+		Arrays.fill(dp, INF);
+		dp[0] = 0;
+	}
+
+	private static void sol() throws IOException {
+		for (int i = 1; i <= K; i++) {
+			for (int coin : coins) {
+				if (i - coin >= 0 && dp[i - coin] != INF) {
+					dp[i] = Math.min(dp[i], dp[i - coin] + 1);
+				}
+			}
+		}
+		bw.write(dp[K] != INF ? (dp[K] + "") : "-1");
+		bw.flush();
+		bw.close();
+		br.close();
+	}
+
+}
+```