books, libs, days = [int(x) for x in input().split()]
books = input()

lib_order = []

for i, l in enumerate(libs):
    b, s, t = [int(x) for x in input().split()]
    lbooks = input()
    lib_order.append((l, i))

lib_order.sort()


print(1000)

for t, l in lib_order:
    print(l, 1000)
    print(' '.join([str(i) for i in range(l*1000, l*1000+999)]))