Compilare: user.cpp: In function ‘void Rezolvare()’: user.cpp:222:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(1 <= izolat.size() && izolat.size() < nrc) ^ user.cpp:225:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < izolat.size(); ++i) ^ user.cpp:229:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(izolat.size() == nrc) ^ user.cpp:231:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < izolat.size(); ++i) ^ user.cpp: In function ‘void Afisare()’: user.cpp:242:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < sol.size(); ++i) ^ user.cpp: In function ‘void Rezolvare()’: user.cpp:181:52: warning: ‘firstx’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol.push_back(make_pair(repr[lasty], repr[firstx])); ^ user.cpp:175:49: warning: ‘lasty’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol.push_back(make_pair(repr[lasty], repr[j])); ^