SOLUTION INFO
Python · main.py
from collections import deque
import sys
def input():
return sys.stdin.readline().rstrip()
n, m = map(int, input().split())
learning = {i:[] for i in range(1, n+1)}
indegree = [0] * (n+1)
dp = [1] * (n+1)
for _ in range(m):
a, b = map(int, input().split())
learning[a].append(b)
indegree[b] += 1
q = deque()
for i in range(1,n+1):
if indegree[i] == 0:
q.append(i)
while q:
cur = q.popleft()
for nxt in learning[cur]:
indegree[nxt] -= 1
if indegree[nxt] == 0:
q.append(nxt)
dp[nxt] = max(dp[nxt], dp[cur]+1)
print(' '.join(map(str,dp[1:])))
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