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[mypy] Fix mypy error (#4524)

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strambake 2021-07-06 12:38:33 +05:30 committed by GitHub
parent 95862303a6
commit 4412eafaac
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1 changed files with 16 additions and 13 deletions
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29
graphs/scc_kosaraju.py
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@ -1,25 +1,28 @@
from typing import List
def dfs(u): def dfs(u):
global g, r, scc, component, visit, stack global graph, reversedGraph, scc, component, visit, stack
if visit[u]: if visit[u]:
return return
visit[u] = True visit[u] = True
for v in g[u]: for v in graph[u]:
dfs(v) dfs(v)
stack.append(u) stack.append(u)
def dfs2(u): def dfs2(u):
global g, r, scc, component, visit, stack global graph, reversedGraph, scc, component, visit, stack
if visit[u]: if visit[u]:
return return
visit[u] = True visit[u] = True
component.append(u) component.append(u)
for v in r[u]: for v in reversedGraph[u]:
dfs2(v) dfs2(v)
def kosaraju(): def kosaraju():
global g, r, scc, component, visit, stack global graph, reversedGraph, scc, component, visit, stack
for i in range(n): for i in range(n):
dfs(i) dfs(i)
visit = [False] * n visit = [False] * n
@ -36,16 +39,16 @@ if __name__ == "__main__":
# n - no of nodes, m - no of edges # n - no of nodes, m - no of edges
n, m = list(map(int, input().strip().split())) n, m = list(map(int, input().strip().split()))
g = [[] for i in range(n)] # graph graph: List[List[int]] = [[] for i in range(n)] # graph
r = [[] for i in range(n)] # reversed graph reversedGraph: List[List[int]] = [[] for i in range(n)] # reversed graph
# input graph data (edges) # input graph data (edges)
for i in range(m): for i in range(m):
u, v = list(map(int, input().strip().split())) u, v = list(map(int, input().strip().split()))
g[u].append(v) graph[u].append(v)
r[v].append(u) reversedGraph[v].append(u)
stack = [] stack: List[int] = []
visit = [False] * n visit: List[bool] = [False] * n
scc = [] scc: List[int] = []
component = [] component: List[int] = []
print(kosaraju()) print(kosaraju())