[20251002] BOJ / G4 / 동전 1 / 김민진

zinnnn37/202510/1 BOJ G4 구슬게임.md

@@ -1,6 +1,4 @@
 ```java
-package etc;
-
 import java.io.*;
 import java.util.StringTokenizer;
 

zinnnn37/202510/2 BOJ G4 동전1.md

@@ -0,0 +1,47 @@
+```java
+import java.io.*;
+import java.util.StringTokenizer;
+
+public class BJ_2293_동전_1 {
+
+    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[] dp, coins;
+
+    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());
+
+        dp = new int[K + 1];
+        coins = new int[N];
+        for (int i = 0; i < N; i++) {
+            coins[i] = Integer.parseInt(br.readLine());
+        }
+        dp[0] = 1;
+    }
+
+    private static void sol() throws IOException {
+        for (int coin : coins) {
+            for (int i = 1; i <= K; i++) {
+                if (i - coin < 0) continue;
+
+                dp[i] += dp[i - coin];
+            }
+        }
+        bw.write(dp[K] + "");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+}
+```