Eroare de compilare in evaluator: user.cpp: In function 'void read()': user.cpp:36: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void solve()': user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp:61: error: call of overloaded 'abs(double)' is ambiguous /usr/include/stdlib.h:778: note: candidates are: int abs(int) /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/cstdlib:172: note: long long int __gnu_cxx::abs(long long int) /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/cstdlib:142: note: long int std::abs(long int)