Compilare: main.cpp: In function 'void Dfs(int, 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 Do()': main.cpp:98:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp:112:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < a.size(); ++i ) ~~^~~~~~~~~~ main.cpp:125:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < sol.size(); ++i ) ~~^~~~~~~~~~~~ main.cpp:110:7: warning: unused variable 'aux' [-Wunused-variable] int aux = 0; ^~~ main.cpp:96:14: warning: 'n_max' may be used uninitialized in this function [-Wmaybe-uninitialized] while( nod != n_max ) ~~~~^~~~~~~~