Compilare: user.cpp: In function ‘void SolveTest()’: user.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (A.size() < lmax && B.size() < lmax) ^ user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (A.size() < lmax && B.size() < lmax) ^ user.cpp:39:9: warning: unused variable ‘na’ [-Wunused-variable] int na = A.size(), nb = B.size(), nc = C.size(); ^ user.cpp:39:24: warning: unused variable ‘nb’ [-Wunused-variable] int na = A.size(), nb = B.size(), nc = C.size(); ^ user.cpp:39:39: warning: unused variable ‘nc’ [-Wunused-variable] int na = A.size(), nb = B.size(), nc = C.size(); ^