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[BFS] swea-1238
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Diff for: ‎README.md

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| 14 | | [Baekjoon-1600 말이 되고픈 원숭이](./src/BFS/P1600) | |
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| 15 | | [SWEA-1953 탈주범 검거](./src/BFS/swea1953) | |
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| 16 | | [SWEA-10966 물놀이를 가자](./src/BFS/swea10966) | |
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| 17 | | [SWEA-1238 Contact](./src/BFS/swea1238) | |
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## Divide and Conquer
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Diff for: ‎src/BFS/swea1238/README.md

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## [SW Expert Academy - 1238] Contact
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![image](https://user-images.githubusercontent.com/22045163/111248840-0e466e80-864e-11eb-87f9-b68ce62c702e.png)
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![image](https://user-images.githubusercontent.com/22045163/111248890-274f1f80-864e-11eb-93bb-07e1244e75a2.png)
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![image](https://user-images.githubusercontent.com/22045163/111248943-3df57680-864e-11eb-81bf-746d653c3177.png)
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![image](https://user-images.githubusercontent.com/22045163/111248988-52d20a00-864e-11eb-9b4f-8425dd1f7bcb.png)
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![image](https://user-images.githubusercontent.com/22045163/111249013-5e253580-864e-11eb-8bda-73f1437d302c.png)
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![image](https://user-images.githubusercontent.com/22045163/111249086-78f7aa00-864e-11eb-896b-809e61c95cef.png)

Diff for: ‎src/BFS/swea1238/Solution.java

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package BFS.swea1238;
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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.*;
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public class Solution {
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static int L, start, max;
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static boolean[] visited;
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static LinkedList<Integer>[] graph = new LinkedList[101];
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public static void main(String[] args) throws Exception {
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System.setIn(new FileInputStream("src/BFS/swea1238/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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for (int t = 1; t <= 10; t++) {
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StringTokenizer st = new StringTokenizer(br.readLine());
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L = Integer.parseInt(st.nextToken());
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start = Integer.parseInt(st.nextToken());
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st = new StringTokenizer(br.readLine());
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for (int i = 1; i <= 100; i++) graph[i] = new LinkedList<>();
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while (L > 0) {
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int from = Integer.parseInt(st.nextToken());
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int to = Integer.parseInt(st.nextToken());
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graph[from].add(to);
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L -= 2;
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}
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max = 0;
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Queue<Integer> q = new LinkedList<>();
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visited = new boolean[101];
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q.offer(start);
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visited[start] = true;
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while (!q.isEmpty()) {
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int curSize = q.size();
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int tmp = 0;
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while (curSize-- > 0) {
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int from = q.poll();
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for (int to : graph[from]) {
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if (!visited[to]) {
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visited[to] = true;
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q.offer(to);
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tmp = Math.max(tmp, to);
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max = tmp;
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}
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}
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}
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}
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sb.append("#").append(t).append(" ").append(max).append("\n");
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}
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System.out.println(sb.toString());
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}
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}

Diff for: ‎src/BFS/swea1238/input.txt

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Diff for: ‎src/BFS/swea1238/output.txt

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