#include <iostream>
#include <vector>
#include <tuple>

int main() {
    int N;
    std::cin >> N;
    std::vector<int> A(N);
    for (int &a : A) std::cin >> a;
    int max = A.back();
    std::vector<std::tuple<int, int, int>> output;
    output.reserve(N - 1);
    for (int i = N - 2; i >= 0; i--) {
        if (A[i] == max) continue;
        output.emplace_back(1, i + 1, max - A[i]);
        max = A[i];
    }
    std::cout << output.size() << std::endl;
    for (auto &[l, r, v] : output) std::cout << l << ' ' << r << ' ' << v << std::endl;
}