from operator import itemgetter

N = int(input())

ans = dict()
for i in range(N):
    num = int(input())
    M, score = map(int, input().split())
    word = list(map(str, input().split()))
    
    for j in range(M):
        if word[j] in ans:
            ans[word[j]] += score
        else:
            ans[word[j]] = score
            
ans = sorted(ans.items(), key=itemgetter(0))
ans = sorted(ans, reverse=True, key=itemgetter(1))

for i in range(min(len(ans), 10)):
    print(ans[i][0], ans[i][1])