From b5a7ca6077eb7fbbb4c25b1d93bdceacb721c1cd Mon Sep 17 00:00:00 2001 From: Ukj0ng <90972240+Ukj0ng@users.noreply.github.com> Date: Thu, 4 Sep 2025 20:47:25 +0900 Subject: [PATCH] =?UTF-8?q?[20250904]=20BOJ=20/=20P5=20/=20Two=20Machines?= =?UTF-8?q?=20/=20=ED=95=9C=EC=A2=85=EC=9A=B1?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Ukj0ng/202509/4 BOJ P5 Two Machines.md | 68 ++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Ukj0ng/202509/4 BOJ P5 Two Machines.md diff --git a/Ukj0ng/202509/4 BOJ P5 Two Machines.md b/Ukj0ng/202509/4 BOJ P5 Two Machines.md new file mode 100644 index 00000000..a595384c --- /dev/null +++ b/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]); + } + } + } +} + +```