Compilare: user.cpp:201:2: warning: no newline at end of file user.cpp: In function 'int count(std::vector<std::pair<long double, long double>, std::allocator<std::pair<long double, long double> > >, int)': user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp:23: warning: comparison between signed and unsigned integer expressions user.cpp:53: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:171: warning: comparison between signed and unsigned integer expressions