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  1. #include <iostream>
  2. #include <map>
  3. using namespace std;
  4.  
  5.  
  6. int main()
  7. {
  8. map<int,int> mymap={{1,0},{2,1},{9,2},{10,3},{11,4}};;
  9. for(auto it=mymap.rbegin();it!=mymap.rend();){
  10. int v=it->first;
  11. ++it;
  12. mymap.erase(v);
  13. }
  14. std::cout << "done";
  15. }
  16.  
Runtime error #stdin #stdout 0s 5428KB
stdin
Standard input is empty
stdout
Standard output is empty