Compilare: main.cpp: In function 'void TopoSort(int)': main.cpp:50:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void DfsCTC(int)': main.cpp:65:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad_inv[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DfsUnder(int)': main.cpp:78:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad2[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void DfsOver(int)': main.cpp:93:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad2_inv[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Do()': main.cpp:117:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < Ad[i].size(); ++j ) ~~^~~~~~~~~~~~~~ main.cpp:142:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < sol.size(); ++i ) ~~^~~~~~~~~~~~