[20251123] BOJ / G4 / 서울에서 경산까지 / 김민진

zinnnn37/202511/23 BOJ G4 서울에서 경산까지.md

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+```java
+import java.io.*;
+import java.util.Arrays;
+import java.util.StringTokenizer;
+
+public class BJ_14863_서울에서_경산까지 {
+
+    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, ans;
+    private static int[][] dp, cost;
+
+    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());
+
+        cost = new int[N + 1][4];
+        for (int i = 1; i <= N; i++) {
+            st = new StringTokenizer(br.readLine());
+            for (int j = 0; j < 4; j++) {
+                cost[i][j] = Integer.parseInt(st.nextToken());
+            }
+        }
+
+        dp = new int[N + 1][K + 1];
+        for (int i = 0; i <= N; i++) {
+            Arrays.fill(dp[i], -1);
+        }
+        dp[0][0] = 0;
+    }
+
+    private static void sol() throws IOException {
+        for (int i = 1; i <= N; i++) {
+            for (int j = 0; j <= K; j++) {
+                // 도보 선택
+                if (j >= cost[i][0] && dp[i - 1][j - cost[i][0]] != -1) {
+                    dp[i][j] = Math.max(dp[i][j], dp[i - 1][j - cost[i][0]] + cost[i][1]);
+                }
+
+                // 자전거 선택
+                if (j >= cost[i][2] && dp[i - 1][j - cost[i][2]] != -1) {
+                    dp[i][j] = Math.max(dp[i][j], dp[i - 1][j - cost[i][2]] + cost[i][3]);
+                }
+            }
+        }
+
+        for (int i = 0; i <= K; i++) {
+            if (dp[N][i] != -1) {
+                ans = Math.max(ans, dp[N][i]);
+            }
+        }
+
+        bw.write(ans + "");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+}
+```