Eroare de compilare: main.cpp: In function 'void dfs(long long int, long long int)': main.cpp:18:24: error: no match for 'operator*' (operand types are 'long long int' and 'std::pair<int, int>') s+= (nivel[nod]*v[nod]); ~~~~~~~~~~^~~~~~~ main.cpp: In function 'int main()': main.cpp:32:12: error: no match for 'operator>>' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'std::pair<int, int>') fin>>v[i]; ~~~^~~~~~ In file included from /usr/include/c++/6/fstream:38:0, from main.cpp:1: /usr/include/c++/6/istream:120:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(__istream_type& (*__pf)(__istream_type&)) ^~~~~~~~ /usr/include/c++/6/istream:120:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}' /usr/include/c++/6/istream:124:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>] operator>>(__ios_type& (*__pf)(__ios_type&)) ^~~~~~~~ /usr/include/c++/6/istream:124:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}' /usr/include/c++/6/istream:131:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(ios_base& (*__pf)(ios_base&)) ^~~~~~~~ /usr/include/c++/6/istream:131:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::ios_base& (*)(std::ios_base&)' /usr/include/c++/6/istream:168:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(bool& __n) ^~~~~~~~ /usr/include/c++/6/istream:168:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'bool&' /usr/include/c++/6/istream:172:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>] operator>>(short& __n); ^~~~~~~~ /usr/include/c++/6/istream:172:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'short int&' /usr/include/c++/6/istream:175:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(unsigned short& __n) ^~~~~~~~ /usr/include/c++/6/istream:175:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'short unsigned int&' /usr/include/c++/6/istream:179:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>] operator>>(int& __n); ^~~~~~~~ /usr/include/c++/6/istream:179:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'int&' /usr/include/c++/6/istream:182:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(unsigned int& __n) ^~~~~~~~ /usr/include/c++/6/istream:182:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'unsigned int&' /usr/include/c++/6/istream:186:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(long& __n) ^~~~~~~~ /usr/include/c++/6/istream:186:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'long int&' /usr/include/c++/6/istream:190:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] operator>>(unsigned long& __n) ^~~~~~~~ /usr/include/c++/6/istream:190:7: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'long unsigned int&' Non zero exit status: 1