Compilare: user.cpp: In function ‘int BFS()’: user.cpp:41: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void Bag_flux()’: user.cpp:57: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void BF1()’: user.cpp:86: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void BF2()’: user.cpp:105: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void Scriere()’: user.cpp:119: warning: comparison between signed and unsigned integer expressions user.cpp:122: warning: comparison between signed and unsigned integer expressions user.cpp:130: warning: comparison between signed and unsigned integer expressions