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baekjoon 20260105

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songyc macbook 2026-01-05 22:57:34 +09:00
parent fc86127050
commit 3eeaae2024
2 changed files with 104 additions and 0 deletions
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40
code_study/Baekjoon/java/_1766.java Normal file
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import java.util.*;
public class _1766 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int N = sc.nextInt(), M = sc.nextInt();
int[] indegree = new int[N+1];
@SuppressWarnings("unchecked")
ArrayList<Integer>[] graph = new ArrayList[N+1];
for(int i=0; i<=N; i++) graph[i] = new ArrayList<>();
for(int i=0; i<M; i++) {
int a = sc.nextInt(), b = sc.nextInt();
indegree[b]++;
graph[a].add(b);
}
sc.close();
PriorityQueue<Integer> pq = new PriorityQueue<>();
for(int i=1; i<=N; i++) if(indegree[i] == 0) pq.add(i);
ArrayList<Integer> ans = new ArrayList<>();
while(!pq.isEmpty()) {
int now = pq.poll();
ans.add(now);
for (int next : graph[now]) {
indegree[next]--;
if(indegree[next] == 0) pq.add(next);
}
}
for (int n : ans) {
System.out.printf("%d ",n);
}
}
}

64
code_study/Baekjoon/python/24900.py Normal file
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