import sys
input = sys.stdin.readline

N=int(input())
A=list(map(int,input().split()))

ANS=[]

for i in range(N-1,-1,-1):
    a=A[i]
    sa=A[-1]-a

    ANS.append((i+1,i+1,sa))

print(len(ANS))
for l,r,c in ANS:
    print(l,r,c)