[BruteForce] baekjoon-14889

Author: Seogeurim

README.md

@@ -62,6 +62,7 @@
 | 02  |     | [Programmers 카펫](./src/BruteForce/prg42842)      |      |
 | 03  |     | [Baekjoon-2961 도영이가 만든 맛있는 음식](./src/BruteForce/P2961)  |      |
 | 04  |     | [Baekjoon-3040 백설 공주와 일곱 난쟁이](./src/BruteForce/P3040)    |      |
+| 05  |     | [Baekjoon-14889 스타트와 링크](./src/BruteForce/P14889)   | 삼성 SW 역량 테스트 기출 |
 
 ## DFS & BFS
 

src/BruteForce/P14889/Main.java

@@ -0,0 +1,61 @@
+package BruteForce.P14889;
+
+import java.io.*;
+import java.util.StringTokenizer;
+
+public class Main {
+
+    static int N, ans = Integer.MAX_VALUE;
+    static int[][] S;
+    static boolean[] visited;
+
+    public static void main(String[] args) throws Exception {
+        System.setIn(new FileInputStream("src/BruteForce/P14889/input.txt"));
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        N = Integer.parseInt(br.readLine());
+        S = new int[N+1][N+1];
+        for (int i = 1; i <= N; i++) {
+            StringTokenizer st = new StringTokenizer(br.readLine());
+            for (int j = 1; j <= N; j++) S[i][j] = Integer.parseInt(st.nextToken());
+        }
+
+        visited = new boolean[N+1];
+        visited[1] = true;
+        comb(2, 1);
+
+        System.out.println(ans);
+    }
+
+    static void comb(int s, int cnt) {
+        if (cnt == N/2) {
+            calc();
+            return;
+        }
+
+        for (int i = s; i <= N; i++) {
+            visited[i] = true;
+            comb(i+1, cnt+1);
+            visited[i] = false;
+        }
+    }
+
+    static void calc() {
+        int s1 = 0, s2 = 0;
+        int[] t1 = new int[N/2], t2 = new int[N/2];
+
+        for (int i = 1, k = 0, l = 0; i <= N; i++) {
+            if (visited[i]) t1[k++] = i;
+            else t2[l++] = i;
+        }
+
+        for (int i = 0; i < N/2-1; i++) {
+            for (int j = i; j < N/2; j++) {
+                s1 += S[t1[i]][t1[j]] + S[t1[j]][t1[i]];
+                s2 += S[t2[i]][t2[j]] + S[t2[j]][t2[i]];
+            }
+        }
+
+        ans = Math.min(ans, Math.abs(s1-s2));
+    }
+}

src/BruteForce/P14889/README.md

@@ -0,0 +1,6 @@
+## [baekjoon-14889] 스타트와 링크
+
+![image](https://user-images.githubusercontent.com/22045163/107963418-7cfec080-6feb-11eb-9bee-fd59e8aca41e.png)
+![image](https://user-images.githubusercontent.com/22045163/107963481-943dae00-6feb-11eb-8afc-6a0914915b71.png)
+
+![image](https://user-images.githubusercontent.com/22045163/107963511-9dc71600-6feb-11eb-91f3-5a20c2de140f.png)

src/BruteForce/P14889/input.txt

@@ -0,0 +1,7 @@
+6
+0 1 2 3 4 5
+1 0 2 3 4 5
+1 2 0 3 4 5
+1 2 3 0 4 5
+1 2 3 4 0 5
+1 2 3 4 5 0