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 ‘int verif()’: user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dfs3(int, int)’: user.cpp:66: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afiseaza()’: user.cpp:93: warning: unused variable ‘j’ user.cpp: In function ‘void rezolva()’: user.cpp:124: warning: comparison between signed and unsigned integer expressions user.cpp:130: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afisare()’: user.cpp:141: warning: unused variable ‘j’