[20250904] BOJ / P5 / Two Machines / 한종욱

Author: Ukj0ng

Ukj0ng/202509/4 BOJ P5 Two Machines.md

@@ -0,0 +1,68 @@
+```
+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 final int INF = 70000;
+    private static int[][] task;
+    private static int[][] dp;
+    private static int N, maxTime;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        DP();
+
+        int answer = INF;
+        for (int j = 0; j <= maxTime; j++) {
+            if (dp[N][j] != INF) {
+                answer = Math.min(answer, Math.max(j, dp[N][j]));
+            }
+        }
+
+        bw.write(answer + "\n");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        N = Integer.parseInt(br.readLine());
+        int a = 0;
+        int b = 0;
+
+        task = new int[2][N];
+
+        for (int i = 0; i < N; i++) {
+            StringTokenizer st = new StringTokenizer(br.readLine());
+            task[0][i] = Integer.parseInt(st.nextToken());
+            task[1][i] = Integer.parseInt(st.nextToken());
+
+            a += task[0][i];
+            b += task[1][i];
+        }
+
+        maxTime = Math.max(a, b);
+
+        dp = new int[N + 1][maxTime + 1];
+        for (int i = 0; i <= N; i++) {
+            Arrays.fill(dp[i], INF);
+        }
+        dp[0][0] = 0;
+    }
+
+    private static void DP() {
+        for (int i = 0; i < N; i++) {
+            for (int j = 0; j <= maxTime; j++) {
+                if (dp[i][j] == INF) continue;
+
+                if (j + task[0][i] <= maxTime) dp[i + 1][j + task[0][i]] = Math.min(dp[i + 1][j + task[0][i]], dp[i][j]);
+
+                dp[i + 1][j] = Math.min(dp[i + 1][j], dp[i][j] + task[1][i]);
+            }
+        }
+    }
+}
+
+```