Buggy python submission (verdict: Time Limit Exceeded):
import sys
import queue
#+++++
		
def main():
	n,q = map(int, input().split())
	tree=[[] for _ in range(n+1)]
	hh=[ 0 for _ in range(n+1)]
	ret=[0 for _ in range(n+1)]
	
	for i in range(n-1):
		pa,ch = map(int, input().split())
		tree[pa].append(ch)
		
	for v in range(q):
		nd, hv = map(int, input().split())
		hh[nd] += hv
		
	ol = queue.Queue(n+1)
	ret[1]=hh[1]
	vv=hh[1]
	for cc in tree[1]:
		ol.put((vv,cc))
		
	while not ol.empty():
		ph,nd=ol.get()
		ret[nd]=hh[nd]+ph
		vv=ret[nd]
		for cc in tree[nd]:
			ol.put((vv,cc))

	print(' '.join([str(v) for v in ret[1:]]))
	
	
#+++++

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
	else:
		pass
		#input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)

Fixed submission:
import sys
import queue
#+++++
		
def main():
	n,q = map(int, input().split())
	tree=[[] for _ in range(n+1)]
	hh=[0 for _ in range(n+1)]
	ret=[0 for _ in range(n+1)]
	
	for i in range(n-1):
		pa,ch = map(int, input().split())
		tree[pa].append(ch)
		
	for v in range(q):
		nd, hv = map(int, input().split())
		hh[nd] += hv
		
	ol = queue.Queue(n+1)
	ret[1]=hh[1]
	vv=hh[1]
	for cc in tree[1]:
		ol.put((vv,cc))
		
	while not ol.empty():
		ph,nd=ol.get()
		ret[nd]=hh[nd]+ph
		vv=ret[nd]
		for cc in tree[nd]:
			ol.put((vv,cc))

	rets=' '.join([str(v) for v in ret[1:]])
	print(rets)
	
	
#+++++

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
	else:
		pass
		input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
import queue
#+++++
		
def main():
	n,q = map(int, input().split())
	tree=[[] for _ in range(n+1)]
	hh=[ 0 for _ in range(n+1)]
	ret=[0 for _ in range(n+1)]
	
	for i in range(n-1):
		pa,ch = map(int, input().split())
		tree[pa].append(ch)
		
	for v in range(q):
		nd, hv = map(int, input().split())
		hh[nd] += hv
		
	ol = queue.Queue()
	ret[1]=hh[1]
	vv=hh[1]
	for cc in tree[1]:
		ol.put((vv,cc))
		
	while not ol.empty():
		ph,nd=ol.get()
		ret[nd]=hh[nd]+ph
		vv=ret[nd]
		for cc in tree[nd]:
			ol.put((vv,cc))

	print(' '.join([str(v) for v in ret[1:]]))
	
	
#+++++

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
	else:
		pass
		#input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)

Fixed submission:
import sys
import queue
#+++++
		
def main():
	n,q = map(int, input().split())
	tree=[[] for _ in range(n+1)]
	hh=[0 for _ in range(n+1)]
	ret=[0 for _ in range(n+1)]
	
	for i in range(n-1):
		pa,ch = map(int, input().split())
		tree[pa].append(ch)
		
	for v in range(q):
		nd, hv = map(int, input().split())
		hh[nd] += hv
		
	ol = queue.Queue(n+1)
	ret[1]=hh[1]
	vv=hh[1]
	for cc in tree[1]:
		ol.put((vv,cc))
		
	while not ol.empty():
		ph,nd=ol.get()
		ret[nd]=hh[nd]+ph
		vv=ret[nd]
		for cc in tree[nd]:
			ol.put((vv,cc))

	rets=' '.join([str(v) for v in ret[1:]])
	print(rets)
	
	
#+++++

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
	else:
		pass
		input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)