triplets from vector, C++ (gcc)

triplets from vector

//Title of this code

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

using namespace std;

vector<tuple<int,int,int>> getTriplets(vector<int>& t) {
 
    vector<tuple<int,int,int>> ret;
    
    for (int i = 0; i < t.size(); ++i)
        for (int j = i + 1; j < t.size(); ++j)
            for (int k = j + 1; k < t.size(); ++k)
                if (t[i] < t[j] && t[j] < t[k]) {
                    tuple<int, int, int> triplet(i,j,k);
                    ret.push_back(triplet);
                }
        
    return ret;
}

void print(vector<int>& t, vector<tuple<int,int,int>>& r) {
    for (int i = 0; i < r.size(); ++i) {
        cout << t[get<0>(r[i])] << " " << t[get<1>(r[i])] << " " << t[get<2>(r[i])] << " ---> ";
        cout << get<0>(r[i]) << " " << get<1>(r[i]) << " " << get<2>(r[i]) << endl;
    }
}

int main()
{
    vector<int> t;
    t.push_back(10);
    t.push_back(2);
    t.push_back(6);
    t.push_back(16);
    t.push_back(30);
    t.push_back(13);
    t.push_back(2);
    t.push_back(67);
    
    
    vector<tuple<int,int,int>> r = getTriplets(t);
    
    print(t, r);

}


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