Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:8:12: error: reference to ‘cin’ is ambiguous int main(){cin>>n>>m; ^~~ user.cpp:4:10: note: candidates are: std::ifstream cin ifstream cin("tequila.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:75:0, from user.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:9:20: error: reference to ‘cin’ is ambiguous for(i=1;i<=n;i++){cin>>val[i];} ^~~ user.cpp:4:10: note: candidates are: std::ifstream cin ifstream cin("tequila.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:75:0, from user.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:10:20: error: reference to ‘cin’ is ambiguous for(i=1;i<=n;i++){cin>>x;if(x==-1){rad=i;}else {L[x].pb(i);}} ^~~ user.cpp:4:10: note: candidates are: std::ifstream cin ifstream cin("tequila.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:75:0, from user.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:13:2: error: reference to ‘cout’ is ambiguous cout<<setprecision(6)<<fixed<<sol<<"\n"; ^~~~ user.cpp:5:10: note: candidates are: std::ofstream cout ofstream cout("tequila.out");vector<int> L[100005]; ^~~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:75:0, from user.cpp:1: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ user.cpp:14:13: error: reference to ‘cin’ is ambiguous while(m--){cin>>x>>y;sol+=(double)(y-val[x])/lvl[x];val[x]=y;cout<<sol<<"\n";} ^~~ user.cpp:4:10: note: candidates are: std::ifstream cin ifstream cin("tequila.in");