N=int(input())
A=list(map(int,input().split()))
ans=[]
i=N-2
d=0
while i>=0:
    while i>0 and A[i]==A[i+1]:
        i-=1
    ans.append((1,i+1,A[-1]-A[i]-d))
    d+=A[-1]-A[i]-d
    i-=1
print(len(ans))
for a in ans:
    print(*a)