Eroare de compilare: user.cpp: In function ‘int tc(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&)’: user.cpp:14: warning: comparison between signed and unsigned integer expressions user.cpp:15: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:53: error: invalid initialization of reference of type ‘std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&’ from expression of type ‘std::vector<std::pair<long long int, long long int>, std::allocator<std::pair<long long int, long long int> > >’ user.cpp:13: error: in passing argument 1 of ‘int tc(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&)’