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[DFS] swea-2105
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‎README.md

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| 13 | | [Baekjoon-3109 빵집](./src/DFS/P3109) | |
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| 14 | | [Baekjoon-1987 알파벳](./src/DFS/P1987) | |
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| 15 | | [Baekjoon-17070 파이프 옮기기 1](./src/DFS/P17070) | 삼성 A형 기출 |
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| 16 | | [SWEA-2105 디저트 카페](./src/DFS/swea2105) | |
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### BFS
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‎src/DFS/swea2105/README.md

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## [SW Expert Academy - 2105] 디저트 카페
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![image](https://user-images.githubusercontent.com/22045163/109147298-3148d580-77a8-11eb-81a2-8649fe72c0ea.png)
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![image](https://user-images.githubusercontent.com/22045163/109147501-6c4b0900-77a8-11eb-801c-346348805f40.png)
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![image](https://user-images.githubusercontent.com/22045163/109147563-7c62e880-77a8-11eb-872c-e20313b7cc23.png)
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![image](https://user-images.githubusercontent.com/22045163/109147604-88e74100-77a8-11eb-8a6d-b0835eb0064a.png)
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![image](https://user-images.githubusercontent.com/22045163/109147661-9997b700-77a8-11eb-9c81-bc8e89cb5c95.png)

‎src/DFS/swea2105/Solution.java

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package DFS.swea2105;
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import java.io.BufferedReader;
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import java.io.FileInputStream;
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import java.io.InputStreamReader;
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import java.util.StringTokenizer;
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public class Solution {
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static int T, N, ans;
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static int[][] map;
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static boolean[] eat;
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static int[] di = {1, 1, -1, -1};
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static int[] dj = {1, -1, -1, 1};
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public static void main(String[] args) throws Exception {
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System.setIn(new FileInputStream("src/DFS/swea2105/sample_input.txt"));
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BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
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StringBuilder sb = new StringBuilder();
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T = Integer.parseInt(br.readLine());
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for (int t = 1; t <= T; t++) {
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N = Integer.parseInt(br.readLine());
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map = new int[N][N];
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for (int i = 0; i < N; i++) {
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StringTokenizer st = new StringTokenizer(br.readLine());
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for (int j = 0; j < N; j++) map[i][j] = Integer.parseInt(st.nextToken());
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}
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ans = -1;
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eat = new boolean[101];
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for (int i = 0; i < N-2; i++) {
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for (int j = 1; j < N-1; j++) {
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eat[map[i][j]] = true;
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dfs(i, j, i, j,0, 1);
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eat[map[i][j]] = false;
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}
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}
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sb.append("#").append(t).append(" ").append(ans).append("\n");
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}
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System.out.println(sb.toString());
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}
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static void dfs(int si, int sj, int i, int j, int dir, int sum) {
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for (int d = dir; d <= dir+1; d++) {
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if (d > 3) continue;
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int to_i = i + di[d];
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int to_j = j + dj[d];
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if (si == to_i && sj == to_j) {
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ans = Math.max(ans, sum);
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return;
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}
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if (isValidPath(to_i, to_j) && !eat[map[to_i][to_j]]) {
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eat[map[to_i][to_j]] = true;
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dfs(si, sj, to_i, to_j, d, sum+1);
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eat[map[to_i][to_j]] = false;
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}
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}
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}
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static boolean isValidPath(int i, int j) {
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return 0 <= i && i < N && 0 <= j && j < N;
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}
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}

‎src/DFS/swea2105/sample_input.txt

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10
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4
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9 8 9 8
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4 6 9 4
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8 7 7 8
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4 5 3 5
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5
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8 2 9 6 6
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1 9 3 3 4
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8 2 3 3 6
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4 3 4 4 9
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7 4 6 3 5
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6
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1 8 9 6 3 9
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5 3 1 9 8 2
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6 9 3 4 1 2
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7 1 1 5 1 9
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1 9 6 8 7 3
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7 6 4 5 5 5
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7
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7 4 1 5 1 7 9
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9 4 6 1 4 6 8
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9 6 4 8 4 7 4
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3 2 6 2 4 2 8
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4 9 4 6 2 4 7
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1 7 6 8 9 5 8
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1 9 4 7 2 9 7
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8
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18 18 7 16 15 3 5 6
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3 6 8 3 15 13 15 2
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4 1 11 17 3 4 3 17
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16 2 18 10 2 3 11 12
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11 17 16 2 9 16 5 4
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17 7 6 16 16 11 15 8
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2 1 7 18 12 11 6 2
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13 12 12 15 9 11 12 18
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9
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12 3 10 8 11 12 5 3 11
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8 6 4 9 8 2 4 7 6
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6 10 12 8 3 8 11 3 3
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6 10 5 5 5 11 8 10 2
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5 13 3 7 5 6 5 12 6
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6 1 5 4 4 13 8 7 2
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12 7 13 3 5 1 11 7 3
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13 12 7 5 6 12 12 9 6
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1 12 13 13 11 3 4 10 9
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10
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18 8 21 24 8 4 20 15 14 23
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17 22 3 14 3 19 19 7 6 13
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2 26 10 10 10 7 18 14 15 17
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13 25 7 20 18 21 8 2 4 24
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4 3 1 5 15 3 15 12 22 23
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19 22 9 17 6 9 22 26 2 5
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12 13 19 13 6 2 12 19 24 8
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21 21 24 15 4 1 20 13 14 5
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6 10 17 13 7 4 22 16 9 7
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17 8 12 11 20 13 5 24 11 3
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11
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19 1 20 18 8 11 21 11 4 19 14
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14 17 6 10 19 3 5 9 18 20 7
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4 8 9 3 3 1 3 17 3 19 21
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20 19 13 21 20 17 5 21 15 3 10
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18 1 7 16 19 21 15 8 7 17 5
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21 1 3 11 14 4 15 10 14 15 17
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5 15 5 12 16 5 15 14 8 11 5
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14 18 2 19 19 8 5 7 11 11 1
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20 9 13 8 16 4 21 20 12 16 1
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9 11 7 18 5 19 5 18 13 18 20
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5 16 1 12 6 15 8 15 3 18 7
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14
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11 31 22 3 36 20 10 23 6 5 22 22 19 29
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9 7 13 9 31 15 7 1 13 33 11 24 7 36
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21 22 6 19 23 4 6 21 14 36 9 4 30 21
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17 2 30 13 26 36 2 13 32 27 36 5 28 16
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8 20 12 16 31 10 32 15 19 24 34 20 1 16
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17 18 22 3 10 2 30 26 27 29 10 16 24 12
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25 32 31 20 10 29 19 11 32 23 28 20 33 24
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9 13 19 4 6 27 24 5 16 2 8 34 2 7
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21 5 5 26 2 35 7 36 21 22 23 33 2 6
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16 21 15 21 12 11 13 28 3 3 14 23 16 4
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1 31 35 33 23 29 12 18 24 25 19 33 17 13
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29 6 30 19 33 14 35 14 6 23 27 16 12 24
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26 31 30 10 16 21 7 4 16 25 31 19 21 8
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12 5 2 4 4 27 29 2 18 20 19 26 32 31
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20
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11 34 7 49 59 88 79 12 63 38 13 27 9 70 97 92 86 95 84 18
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11 84 39 44 86 86 59 52 61 97 81 94 92 78 32 7 5 62 41 75
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15 61 71 27 3 4 79 51 95 99 73 27 75 31 4 7 15 51 50 16
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6 81 32 61 75 24 36 26 57 55 52 15 35 44 30 25 2 54 12 25
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42 4 66 1 23 44 1 7 63 27 82 70 40 45 4 3 12 35 11 85
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97 55 69 49 34 79 37 69 89 66 85 22 23 88 24 79 1 48 85 72
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4 67 23 3 27 18 37 61 7 68 88 80 35 21 42 88 38 10 81 84
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78 86 21 50 46 13 50 9 54 3 1 94 85 75 80 45 31 100 29 70
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9 59 7 48 81 82 43 68 90 37 26 41 84 31 58 42 4 96 86 20
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22 4 49 94 74 42 6 38 84 90 29 95 84 36 18 4 10 34 71 26
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46 43 7 88 18 21 96 57 3 72 52 83 50 53 56 51 19 50 57 6
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15 30 88 26 49 10 6 12 98 81 47 88 82 2 68 85 62 12 92 88
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100 31 5 15 76 84 39 10 52 61 28 12 50 22 35 85 1 83 2 76
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17 27 83 45 18 4 95 37 23 96 58 49 36 47 13 10 41 38 37 6
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22 92 59 68 51 15 65 88 18 69 40 49 7 11 78 14 95 94 45 27
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13 36 33 22 29 49 11 10 50 91 15 71 87 83 63 26 76 89 28 9
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98 9 96 58 72 79 28 9 63 67 85 16 40 66 46 47 17 85 16 99
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42 87 28 97 60 89 92 90 51 60 96 22 51 95 55 44 16 9 51 69
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27 45 53 43 45 52 12 90 86 91 47 39 84 9 21 77 69 56 5 69
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99 47 66 91 71 2 9 26 43 54 52 30 4 94 97 92 2 67 12 85

‎src/DFS/swea2105/sample_output.txt

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#1 6
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#2 -1
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#3 4
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#4 4
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#5 8
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#6 6
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#7 14
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#8 12
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#9 18
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#10 30

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