Merge pull request #1540 from AlgorithmWithGod/ksinji

[20251129] BOJ / G5 / 동전 2 / 강신지

Author: ShinHeeEul

ksinji/202511/29 BOJ 동전 2.md

@@ -0,0 +1,38 @@
+```java
+import java.io.*;
+import java.util.*;
+
+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[] coins = new int[n];
+        for (int i = 0; i < n; i++) {
+            coins[i] = Integer.parseInt(br.readLine());
+        }
+
+        int[] dp = new int[k + 1];
+        Arrays.fill(dp, 10001);
+        dp[0] = 0;
+
+        for (int i = 0; i < n; i++) {
+            int coin = coins[i];
+            for (int j = coin; j <= k; j++) {
+                if (dp[j - coin] != 10001) {
+                    dp[j] = Math.min(dp[j], dp[j - coin] + 1);
+                }
+            }
+        }
+
+        if (dp[k] == 10001) {
+            System.out.println(-1);
+        } else {
+            System.out.println(dp[k]);
+        }
+    }
+}
+```