n, m, k = map(int, input().split())
foods = [[0] * k for _ in range(n)]
orders = [0] * n
ingredients = [0] * k
for i in range(n):
    a_i = int(input())
    for _ in range(a_i):
        ids, x = map(int, input().split())
        foods[i][ids - 1] = x
for _ in range(m):
    b_i = int(input())
    for _ in range(b_i):
        ids, y = map(int, input().split())
        orders[ids - 1] += y

for i in range(n):
    if orders[i] > 0:
        for j in range(k):
            ingredients[j] += foods[i][j] * orders[i]

print(' '.join(map(str, ingredients)))