N,K=map(int,input().split())
T=list(map(int,input().split()))
U=list(map(int,input().split()))
from random import randint
for i in range(N):
    b = randint(1,10**9)
    m = randint(1,10**9)
    if b<m:
        b,m=m,b
    e = randint(1,10**9)
    print(b,m,e)