#include<fstream>
using namespace std;
int main(){

    ifstream fin("nrtri.in");
    ofstream fout("nrtri.out");

    int n,s=0;
    fin>>n;

    int v[n];
    for(int i=0;i<n;++i){

        fin>>v[i];
    }

    for(int i=0;i<n-1;++i){

        for(int j=i+1;j<n;++j){

            for(int z=j+1;z<n;++z){

                if(z!=i && z!=j){

                    if(v[i]+v[j]>=v[z] && v[i]+v[z]>=v[j] && v[j]+v[z]>=v[i]){
                        cout<<v[i]<<" "<<v[j]<<" "<<v[z]<<endl;
                        ++s;
                    }
                }
            }
        }
    }

    fout<<s;
}