n=int(input())
cnt={}
for _ in range(n):
    input()
    _,m=map(int,input().split())
    for i in input().split():
        if i not in cnt:
            cnt[i]=m
        else:
            cnt[i]+=m
cnt=sorted(cnt.items(),key=lambda x:(-x[1],x[0]))
for i in range(min(10,len(cnt))):
    print(cnt[i][0],cnt[i][1])