Compilare: user.cpp: In function ‘void Rezolvare()’: user.cpp:232:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < izolat.size(); ++i) ^ In file included from /usr/local/include/c++/4.8.0/cassert:43:0, from user.cpp:3: user.cpp:241:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(izolat.size() == nrc); ^ user.cpp:242:31: 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:257:26: 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:183:52: warning: ‘firstx’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol.push_back(make_pair(repr[lasty], repr[firstx])); ^