#include<iostream>
#include<vector>
#include<string>
#include<algorithm>
using namespace std;


void print( vector<string>& v) {
     for ( auto it=v.begin();it!=v.end(); it++ ) {
     cout<< *it <<" " ;
     }
     cout <<endl;
}

int main (void) {
   vector<string> myVector;
   print(myVector);
   myVector={"αυγα","γάλα", "ζάχαρη" ,"σοκολάτα" , "αλεύρι"};
   print(myVector);
   myVector.pop_back();
   print(myVector);
   myVector.push_back("καφέ");
   //βροχος αναζητησης
   auto iter=find(myVector.begin(),myVector.end(),"ζάχαρη");
   if (iter!=myVector.end()) {
      *iter="μελι";
    }
    //broxos anazhths
    auto it=find(myVector.begin(),myVector.end(),"γάλα");
    if(it!=myVector.end()) {
       myVector.erase(it);
    }
    print(myVector);
    
return 0;
}