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#include <iostream>
#include<fstream>
#include <stdlib.h>
using namespace std;
int v[801];
int compare (const void * a, const void * b)
{
return ( *(int*)a - *(int*)b );
}
int main()
{
ifstream f("nrtri.in");
ofstream g("nrtri.out");
int n;
int i;
f>>n;
for(i=0;i<n;i++)
f>>v[i];
// qsort (v, n, sizeof(int), compare);
int j,k,contor=0;
// for(i=0;i<n;i++)
// cout<<v[i]<<" ";
for(i=0;i<n-2;i++)
for(j=i+1;j<n-1;j++)
for(k=j+1;k<n;k++)
if(v[i]+v[j]>=v[k]&&v[j]+v[k]>=v[i]&&v[k]+v[i]>=v[j])
{contor++; cout<<v[i]<<" "<<v[j]<<" "<<v[k];}
g<<contor;
return 0;
}