[20250917] BOJ / G5 / Coins / 한종욱

Author: Ukj0ng

Ukj0ng/202509/17 BOJ G5 Coins.md

@@ -0,0 +1,48 @@
+```
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static int[] coins, dp;
+    private static int N, M;
+
+    public static void main(String[] args) throws IOException {
+        int T = Integer.parseInt(br.readLine());
+
+        while (T-->0) {
+            init();
+            DP();
+            bw.write(dp[M] + "\n");
+        }
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        N = Integer.parseInt(br.readLine());
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        coins = new int[N];
+        for (int i = 0; i < N; i++) {
+            coins[i] = Integer.parseInt(st.nextToken());
+        }
+
+        M = Integer.parseInt(br.readLine());
+        dp = new int[M+1];
+
+        dp[0] = 1;
+    }
+
+    private static void DP() {
+        for (int i = 0; i < N; i++) {
+            for (int j = 1; j <= M; j++) {
+                if (j - coins[i] >= 0 && dp[j - coins[i]] > 0) {
+                    dp[j] += dp[j - coins[i]];
+                }
+            }
+        }
+    }
+}
+```