p2293 solved

10주차/p2293/송호준/Main.java

@@ -0,0 +1,30 @@
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.*;
+
+public class Main {
+
+    public static void main(String[] args) throws IOException {
+        Set<Integer> set = new HashSet<>();
+        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[] dp = new int[k + 1];
+        for (int i = 0; i < n; i++) {
+            int value = Integer.parseInt(br.readLine());
+            if (value <= k) {
+                set.add(value);
+            }
+        }
+
+        for (int e : set) {
+            dp[e]++;
+            for (int i = e; i <= k; i++) {
+                dp[i] += dp[i - e];
+            }
+        }
+        System.out.println(dp[k]);
+    }
+}