Compilare: user.cpp: In function ‘bool umbrelizat(int, int, int, int)’: user.cpp:37:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < umbrele[i].size(); j++) ^ user.cpp: In function ‘void smallIt()’: user.cpp:84:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<v.size(); i++) ^ user.cpp: In function ‘void readLoacalPreferences()’: user.cpp:124:43: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(sum[x2][y2] - sum[x2][y1-1] == sum[x1-1][y2] - sum[x1-1][y1-1]) ^