n=int(input())
a=[*map(int,input().split())]
for i in range(30)[::-1]:
    l=1;r=0
    if a[0]>>i&1:continue
    while r<n and a[r]&1<<i<1:a[r]|=1<<i;r+=1
    print(l,r,1<<i);a.sort()