Week (5+) P - Misha and Changing Handles

من طرف Admin الجمعة فبراير 17, 2017 7:53 am

الكود:: #include <iostream> #include <bits/stdc++.h> using namespace std; int main () { int S,n; string oldname,newname,box; map<string,string>names; map<string,string>::iterator itr; cin>>S; for (int i=0;i<S;i++) {cin>>oldname>>newname; if (i!=0){ itr=names.find(oldname); if (names.end()!=itr) { box=itr->second; names.erase(itr); names[newname]=box; //itr->first=newname; continue;} }//1st if names.insert(make_pair(newname,oldname)); } itr=names.begin(); cout<<names.size()<<endl; for (int i=0;i<names.size();itr++,i++) { cout<<itr->second<<" "<<itr->first<<endl; } //itr=names.begin(); /* map<string,string>::iterator itr=names.find("noor"); if (names.end()==itr) cout<<'S'; else itr->second="fdf" ; */ return 0; }