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{{ready}}
rollbackEdits.php mass rollback
== Описание ==
{|align="center"
|-valign="top"
i = j = 0
V[n] = V[0], V[n+1] = V[1], W[nm] = W[0], W[nm+1] = W[1]
while i < n or j < m do
add V[i]+W[j] to answer
