Merge pull request #136 from AlgoLeadMe/4-wonjunYou

4-wonjunYou
AlgoLeadMe · Aug 30, 2024 · ef09710 · ef09710
2 parents 542bce0 + 3d75c99
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diff --git a/wonjunYou/README.md b/wonjunYou/README.md
@@ -1,6 +1,7 @@
 ## ✏️ 기록
 
-| 차시  |    날짜     |   문제유형   |                                          링크                                          |                         풀이                          |
-|:---:|:---------:|:--------:|:------------------------------------------------------------------------------------:|:---------------------------------------------------:|
-| 1차시 | 2024.7.17 |    스택    | <a href= "https://school.programmers.co.kr/learn/courses/30/lessons/42584">주식 가격</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/121 |
-| 2차시 | 2024.7.20 | 슬라이딩 윈도우 |  <a href= "https://www.acmicpc.net/problem/13422">도둑</a>   | https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/128 |
+| 차시  |    날짜     |    문제유형    |                                          링크                                          |                         풀이                          |
+|:---:|:---------:|:----------:|:------------------------------------------------------------------------------------:|:---------------------------------------------------:|
+| 1차시 | 2024.7.17 |     스택     | <a href= "https://school.programmers.co.kr/learn/courses/30/lessons/42584">주식 가격</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/121 |
+| 2차시 | 2024.7.20 |  슬라이딩 윈도우  |               <a href= "https://www.acmicpc.net/problem/13422">도둑</a>                | https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/128 |
+| 3차시 | 2024.7.24 | 다이나믹 프로그래밍 |               <a href= "https://www.acmicpc.net/problem/3687">성냥개비</a>               | https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/132 |
diff --git a/wonjunYou/다이나믹 프로그래밍/BOJ_입대.java b/wonjunYou/다이나믹 프로그래밍/BOJ_입대.java
@@ -0,0 +1,60 @@
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
+
+        String[] data = reader.readLine().split(" ");
+        int N = Integer.parseInt(data[0]);
+        int M = Integer.parseInt(data[1]);
+
+        int[] scores = new int[N + 1];
+
+        data = reader.readLine().split(" ");
+        for (int i = 1; i <= N; i++) {
+            scores[i] = Integer.parseInt(data[i - 1]);
+        }
+
+        // 세 번째 줄 입력 처리
+        data = reader.readLine().split(" ");
+        int A = Integer.parseInt(data[0]);
+        int D = Integer.parseInt(data[1]);
+
+        reader.close();
+
+        int upper = (N + D - 1) / D; // 최대 헌혈 가능 횟수
+
+        int[][] dp = new int[upper + 1][N + D];
+
+        for (int i = 1; i <= N; i++) {
+            for (int j = 0; j <= upper; j++) {
+                if (j != 0 && dp[j][i - 1] == 0) continue;
+
+                dp[j][i] = Math.max(dp[j][i], dp[j][i - 1] + scores[i]);
+
+                if (j != upper) {
+                    dp[j + 1][i + D - 1] = Math.max(dp[j + 1][i + D - 1], dp[j][i - 1] + A);
+                }
+            }
+        }
+
+        for (int i = 0; i <= upper; i++) {
+            int maxScore = 0;
+
+            for (int j = 0; j < dp[i].length; j++) {
+                maxScore = Math.max(maxScore, dp[i][j]);
+            }
+
+            if (maxScore >= M) {
+                System.out.println(i);
+                return;
+            }
+
+        }
+
+        System.out.println(-1);
+    }
+
+}