from collections import defaultdict
N=int(input())
A=list(map(int,input().split()))
D=defaultdict(int)
for a in A:
    D[a]+=1
A=[(k,v) for k,v in D.items()]
A.sort()
ans=[]
r=0
for i in range(len(A)-1):
    r+=A[i][1]
    ans.append((1,r,A[i+1][0]-A[i][0]))
print(len(ans))
for a in ans:
    print(*a)