Compilare: main.cpp: In function 'void Do()': main.cpp:54:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < Hash[aux].size(); ++j ) ~~^~~~~~~~~~~~~~~~~~ main.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < Hash[aux].size(); ++j ) ~~^~~~~~~~~~~~~~~~~~ main.cpp:91:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < sol.size(); ++i ) ~~^~~~~~~~~~~~