danh sach tuple

res = []
for _ in range(int(input())):
    a = [int(i) for i in input().split()]
    ok = True
    for i in res:
        if a[0] == i[0]:
            i.extend(a[1:])
            ok = False
    if ok :
        res.append(a)
for i in range(len(res)):
    res[i] = tuple(res[i])
print(res)

'''
4
5 6
5 7
5 8
6 5 8 7

3
6 7
6 10
6 8
'''