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w[v] = ''true''
rollbackEdits.php mass rollback
s = 0
'''for''' to '''in''' g[v]
s += '''countcountPaths'''(g, to, t)
'''return''' s
\begin{array}{ll}
d[v], & w[v]=true \\
\sum\limits_{c|cv \in E}count(c), { cv \in E}, & w[v]=false
\end{array}
\right.
'''else'''
sum = 0
w[v] = ''true''
'''for''' c '''in''' g[v]
sum += '''count'''(g, c)
d[v] = sum
'''return''' sum
