#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int K; cin >> K;
    vector<int> D(K);
    for(auto &d : D) cin >> d;
    sort(D.begin(),D.end());

    int d0 = D.at(0); D.erase(D.begin());
    vector<int> S = {0,2};
    vector<tuple<int,int,int>> edge;
    edge = {{0,1,d0/2},{1,2,d0/2}};
    int bring = d0/2,cent = 1;
    for(auto d : D){
        S.push_back(cent+3);
        edge.push_back({cent,cent+2,d/2-bring});
        edge.push_back({cent+2,cent+3,d/2});
        cent += 2; bring = d/2;
    }
    cout << edge.size()+1 << "\n";
    for(auto [u,v,w] : edge) cout << u+1 << " " << v+1 << " " << w  << "\n";
    cout << S.size() << "\n";
    for(auto &s : S) cout << s+1 << " "; cout << endl;
}