[20250809] BOJ / G5 / 동전 / 이인희

Author: LiiNi-coder

LiiNi-coder/202508/09 BOJ 동전.md

@@ -0,0 +1,38 @@
+```java
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.util.StringTokenizer;
+
+public class Main {
+    private static BufferedReader br;
+
+    public static void main(String[] args) throws IOException {
+        br = new BufferedReader(new InputStreamReader(System.in));
+        int T = Integer.parseInt(br.readLine());
+        StringTokenizer st;
+        StringBuilder sb = new StringBuilder();
+        
+        for (int tc = 0; tc < T; tc++) {
+            int n = Integer.parseInt(br.readLine());
+            int[] coins = new int[n];
+            st = new StringTokenizer(br.readLine());
+            
+            for (int i = 0; i < n; i++) {
+                coins[i] = Integer.parseInt(st.nextToken());
+            }
+            int target = Integer.parseInt(br.readLine());
+            int[] dp = new int[target + 1]; //dp[i] i원을 만드는 경우의수
+            dp[0] = 1;
+            for (int coin : coins) {
+                for (int amount = coin; amount <= target; amount++) {
+                    dp[amount] += dp[amount - coin];
+                }
+            }
+            sb.append(dp[target]).append('\n');
+        }
+        System.out.print(sb.toString());
+        br.close();
+    }
+}
+```