Compilare: user.cpp: In function 'void citire()': user.cpp:23: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int bfs()': user.cpp:55: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void rezolva()': user.cpp:71: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void afisare()': user.cpp:91: warning: comparison between signed and unsigned integer expressions /tmp/cc8RyurS.o: In function `citire()': user.cpp:(.text+0x4e6): warning: the `gets' function is dangerous and should not be used.