Eroare de compilare: user.cpp: In function ‘long long int solve(int, int)’: user.cpp:53:47: error: call of overloaded ‘stoll(std::basic_string<char>)’ is ambiguous return stoll(expression.substr(Left,Right)); ^ user.cpp:53:47: note: candidates are: user.cpp:16:11: note: long long int stoll(std::string) long long stoll(string a) ^ In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/basic_string.h:2838:3: note: long long int std::stoll(const string&, std::size_t*, int) stoll(const string& __str, size_t* __idx = 0, int __base = 10) ^ user.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] } ^