Question: from collections import defaultdict, deque def solve ( edges , values, queries ) : def dfs ( node , parent ) :
from collections import defaultdict, deque
def solveedges values, queries:
def dfsnode parent:
DFS to calculate the start and end indices for each subtree in the Euler tour."""
nonlocal timer
startnode timer
eulertimer node
timer
for child in treenode:
if child parent:
dfschild node
endnode timer
# Step : Build the tree as an adjacency list
tree defaultdictlist
for u v in edges:
treeuappendv
treevappendu
# Step : Perform an Euler tour to map nodes to array indices for subtree updates
N lenvalues
start N
end N
euler N
timer
dfs # Assume is the root node
# Step : Initialize lazy propagation arrays
subtreeadd N
nonsubtreeadd N
# Step : Process each query
for t x y in queries:
if t : # Increment the subtree of node x
subtreeaddstartx y
subtreeaddendx y
elif t : # Increment everything except the subtree of node x
nonsubtreeadd y
nonsubtreeaddN y
subtreeaddstartx y
subtreeaddendx y
# Step : Propagate the lazy updates
# Propagate subtreeadd
for i in range N :
subtreeaddi subtreeaddi
# Propagate nonsubtreeadd
for i in range N :
nonsubtreeaddi nonsubtreeaddi
# Step : Apply the updates to the original values
result N
for i in range N :
node euleri
resultnode valuesnode subtreeaddi nonsubtreeaddi
return result
# Input handling
N intinput
edges listmapint inputsplit for in rangeN
values listmapint inputsplit
Q intinput
queries listmapint inputsplit for in rangeQ
out solveedges values, queries
printjoinmapstr out
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