Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    lgth = max(ab[0])
    node =[[] for i in range(lgth)]
    for i in range(n-1):
        index = ab[0][i]-1
        put = ab[1][i]
        node[index].append(put)

    # print(node)

    def calc(idx,val):
        count[idx] += val

        if idx <= lgth-1:
            for j in node[idx]:
                calc(j-1,val)
        
    for i in range(len(px[0])):    
        calc(px[0][i]-1, px[1][i])
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Fixed submission:
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    oya_list = [0 for i in range(n)]
    for i in range(len(ab[1])):
        oya_list[ab[1][i]-1] = ab[0][i]
    
    for i in range(len(px[1])):
        count[px[0][i]-1] += px[1][i]
        
    for i in range(1,n):

        count[i] += count[oya_list[i]-1]
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    lgth = max(ab[0])
    node =[[] for i in range(lgth)]
    for i in range(n-1):
        index = ab[0][i]-1
        put = ab[1][i]
        node[index].append(put)

    # print(node)
    @lru_cache(maxsize = 2000)
    def calc(idx,val):
        count[idx] += val

        if idx <= lgth-1:
            for j in node[idx]:
                calc(j-1,val)
        
    for i in range(len(px[0])):    
        calc(px[0][i]-1, px[1][i])
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Fixed submission:
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    oya_list = [0 for i in range(n)]
    for i in range(len(ab[1])):
        oya_list[ab[1][i]-1] = ab[0][i]
    
    for i in range(len(px[1])):
        count[px[0][i]-1] += px[1][i]
        
    for i in range(1,n):

        count[i] += count[oya_list[i]-1]
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    lgth = max(ab[0])
    node =[[] for i in range(lgth)]
    for i in range(n-1):
        index = ab[0][i]-1
        put = ab[1][i]
        node[index].append(put)

    # print(node)
    @lru_cache(maxsize = 1000)
    def calc(idx,val):
        count[idx] += val

        if idx <= lgth-1:
            for j in node[idx]:
                calc(j-1,val)
        
    for i in range(len(px[0])):    
        calc(px[0][i]-1, px[1][i])
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Fixed submission:
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    oya_list = [0 for i in range(n)]
    for i in range(len(ab[1])):
        oya_list[ab[1][i]-1] = ab[0][i]
    
    for i in range(len(px[1])):
        count[px[0][i]-1] += px[1][i]
        
    for i in range(1,n):

        count[i] += count[oya_list[i]-1]
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
import numpy as np
import sys

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    lgth = max(ab[0])
    node =[[] for i in range(lgth)]
    for i in range(n-1):
        index = ab[0][i]-1
        put = ab[1][i]
        node[index].append(put)

    # print(node)
    def calc(idx,val):
        count[idx] += val

        if idx <= lgth-1:
            for j in node[idx]:
                calc(j-1,val)
        
    for i in range(len(px[0])):    
        calc(px[0][i]-1, px[1][i])
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()

Fixed submission:
import numpy as np
import sys
from functools import lru_cache

def main():
    n, q = map(int, input().split())
    ab = [[],[]]
    
    for i in range(n-1):
        na,nb = map(int, input().split())
        ab[0].append(na)
        ab[1].append(nb)

    px = [[],[]]
    for i in range(q):
        np,nx = map(int, input().split())        
        px[0].append(np)
        px[1].append(nx)
    
    # print(n,q,ab,px)
    count = [0 for i in range(n)]

    oya_list = [0 for i in range(n)]
    for i in range(len(ab[1])):
        oya_list[ab[1][i]-1] = ab[0][i]
    
    for i in range(len(px[1])):
        count[px[0][i]-1] += px[1][i]
        
    for i in range(1,n):

        count[i] += count[oya_list[i]-1]
    
    print(' '.join(map(str,count)))


if __name__ == '__main__':
    main()