from collections import defaultdict

n = int(input())
Counter = defaultdict(int)
for _ in range(n):
    input()
    m, s = map(int, input().split())
    T = list(input().split())
    for i in range(m):
        Counter[T[i]] += s

Rank = [(key, value) for key, value in Counter.items()]
Rank.sort(key=lambda x: (-x[1], x[0]))
for i in range(min(10, len(Rank))):
    print(*Rank[i])