Compilare: user.cpp: In function ‘void lee()’: user.cpp:99:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cart.size();i++) ^ user.cpp: In function ‘void euler()’: user.cpp:123:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cart.size();i=i+2) ^ user.cpp:147:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[aux].size();i++) ^ user.cpp:165:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ^ user.cpp: In function ‘void lee()’: user.cpp:108:27: warning: ‘jmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << imin << " " << jmin << " " << Min; ^ user.cpp:108:12: warning: ‘imin’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << imin << " " << jmin << " " << Min; ^