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[DFS] baekjoon-17070
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‎README.md

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| 12 | | [SWEA-5215 햄버거 다이어트](./src/DFS/swea5215) | |
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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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### BFS
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‎src/DFS/P17070/Main.java

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package DFS.P17070;
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import java.io.*;
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import java.util.*;
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public class Main {
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static int N, cnt;
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static int[][] map;
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static int[][] del = {{0, 1}, {1, 0}, {1, 1}};
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final static int R = 0, D = 1, RD = 2;
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public static void main(String[] args) throws Exception {
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System.setIn(new FileInputStream("src/DFS/P17070/input.txt"));
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BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
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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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if (map[N-1][N-1] != 1) dfs(0, 1, R);
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System.out.println(cnt);
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}
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static void dfs(int i, int j, int d) {
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for (int to_d = 0; to_d < 3; to_d++) {
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if ((to_d == R && d == D) || (to_d == D && d == R)) continue;
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int to_i = i + del[to_d][0];
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int to_j = j + del[to_d][1];
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if (!isValidPath(to_i, to_j) || map[to_i][to_j] == 1) continue;
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if (to_d == RD && (map[i][j+1] == 1 || map[i+1][j] == 1)) continue;
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if (to_i == N-1 && to_j == N-1) { cnt++; continue; }
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dfs(to_i, to_j, to_d);
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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/P17070/README.md

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## [baekjoon-17070] 파이프 옮기기 1
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![image](https://user-images.githubusercontent.com/22045163/108448988-0fca8400-72a6-11eb-904c-c68a7abd4ffd.png)
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![image](https://user-images.githubusercontent.com/22045163/108449048-2a046200-72a6-11eb-8e37-722b785ab461.png)
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![image](https://user-images.githubusercontent.com/22045163/108449069-338dca00-72a6-11eb-8e1c-a529106c9479.png)
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![image](https://user-images.githubusercontent.com/22045163/108449098-40aab900-72a6-11eb-95a0-b6910f4dd8e0.png)

‎src/DFS/P17070/input.txt

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16
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0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
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0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
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0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0
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0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0
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0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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correct: 664
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wrong: 562
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/*
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6
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0 0 0 0 0 0
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0 0 0 0 0 0
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0 0 0 0 1 0
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0 0 1 0 0 0
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0 0 0 0 0 0
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0 0 0 0 1 0
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correct: 1
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wrong: 0
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6
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0 0 0 0 0 0
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0 0 0 0 0 0
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0 0 0 0 1 0
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0 0 1 0 0 0
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0 0 0 0 0 0
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0 0 0 0 0 0
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correct: 5
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wrong: 4
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6
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0 0 0 0 0 0
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0 0 0 0 0 0
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0 0 0 0 1 0
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0 0 1 0 0 0
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0 0 0 0 0 0
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0 0 0 1 0 0
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correct: 3
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wrong: 2
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7
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0 0 0 0 0 0 0
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0 0 0 0 0 0 0
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0 1 0 0 0 1 0
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0 0 0 0 0 0 0
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1 0 0 0 1 1 0
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0 0 0 0 0 0 0
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0 1 0 0 0 0 0
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correct: 9
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wrong: 8
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7
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0 0 0 0 0 0 0
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0 0 0 0 0 0 0
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0 0 0 0 0 1 0
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0 0 0 0 0 0 0
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0 0 0 0 0 0 0
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0 0 0 0 0 0 0
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0 0 0 0 0 0 0
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correct: 53
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wrong: 52
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16
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0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
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0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
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0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 1 1 0 0 1 1 0 0 0 0 0 1 0
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0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
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0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0
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0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
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0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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correct: 109
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wrong: 103
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16
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0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
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0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
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0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0
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0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0
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0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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correct: 664
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wrong: 562
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*/

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