t = int(input())

d = {}
for i in range(t):
    no = int(input())
    tc, sc = [int(x) for x in input().split()]
    for tn in input().split():
        if not tn in d.keys():
            d[tn] = 0
        d[tn] += sc

for k, v in sorted(d.items(), key=lambda x: x[1], reverse=True):
    print(k, v)