K = int(input())
D = sorted(list(map(int,input().split())))
if K==1:
    print(3)
    print(1,2,D[0]//2)
    print(1,3,D[0]//2)
    print(2)
    print(2,3)
elif K==2:
    print(7)
    print((1,2,(D[1]-D[0])//2))
    print((2,3,D[0]//2))
    print((2,4,D[0]//2))
    print((1,5,(D[1]-D[0])//2))
    print((5,6,D[0]//2))
    print((5,7,D[0]//2))
    print(4)
    print(3,4,6,7)
else:
    L = D[-1]
    E = []
    V = []
    v = 2
    for i in range(K-1):
        d = D[i]
        E += [(1,v,(L-d)//2),(v,v+1,d//2),(v,v+2,d//2)]
        V += [v+1,v+2]
        v += 3
    print(v-1)
    for u,v,w in E:
        print(u,v,w)
    print(len(V))
    print(*V)