Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dfst(int)’: user.cpp:40: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dfs3(int, int, int)’: user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afiseaza()’: user.cpp:83: warning: unused variable ‘j’ user.cpp: In function ‘void rezolva()’: user.cpp:114: warning: comparison between signed and unsigned integer expressions user.cpp:120: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afisare()’: user.cpp:131: warning: unused variable ‘j’