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  1.  
  2. #include <vector>
  3. #include <set>
  4. using namespace std;
  5.  
  6. vector<set<int> > g_vec;
  7. int main()
  8. {
  9. g_vec.push_back({ 1 });
  10. g_vec.push_back({ 1 });
  11. g_vec.emplace_back(g_vec[0]);
  12. return 0;
  13. }
Success #stdin #stdout 0s 3468KB
stdin
Standard input is empty
stdout
Standard output is empty