baekjoon 20260105
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code_study/Baekjoon/java/_1766.java
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40
code_study/Baekjoon/java/_1766.java
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import java.util.*;
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public class _1766 {
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public static void main(String[] args) {
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Scanner sc = new Scanner(System.in);
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int N = sc.nextInt(), M = sc.nextInt();
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int[] indegree = new int[N+1];
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@SuppressWarnings("unchecked")
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ArrayList<Integer>[] graph = new ArrayList[N+1];
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for(int i=0; i<=N; i++) graph[i] = new ArrayList<>();
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for(int i=0; i<M; i++) {
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int a = sc.nextInt(), b = sc.nextInt();
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indegree[b]++;
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graph[a].add(b);
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}
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sc.close();
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PriorityQueue<Integer> pq = new PriorityQueue<>();
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for(int i=1; i<=N; i++) if(indegree[i] == 0) pq.add(i);
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ArrayList<Integer> ans = new ArrayList<>();
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while(!pq.isEmpty()) {
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int now = pq.poll();
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ans.add(now);
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for (int next : graph[now]) {
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indegree[next]--;
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if(indegree[next] == 0) pq.add(next);
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}
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}
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for (int n : ans) {
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System.out.printf("%d ",n);
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}
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}
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}
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64
code_study/Baekjoon/python/24900.py
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64
code_study/Baekjoon/python/24900.py
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print(''' :8DDDDDDDDDDDDDD$.
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DDDNNN8~~~~~~~~~~=~7DNNDNDDDNNI
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?NNDD=~=~~~~~~~~~~~~~~~~~=~~==~=INNDNN7
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+NDDI~~~~~~~~~~~~~~~~~~~~~~~=~~========~ODND+
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:NND~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~============7NDN
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$DD$~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~==============~DNN
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$DD=~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~=================NND
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ND7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~===================DD7
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~DD=~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=======================8DN.
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8DO~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=========================DD
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8N~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~=======================DN
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NN::::::::~~~~~~~~~~~=~~~~~~~~~~~~~~~~~~~=~~========================DDO
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$D$:::::::::::::::~~~~DD~~~~~~~~~~~~~~~~~~=~~=========================DN.
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D8:::::::::::::::::::DN=::~~~~~~~~~~~~~~~~=~~======================~~:~DN
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?DNNDD?~DD ~NN~~=NDD$
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:DDD. NNNN= ''')
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