Compilare: user.cpp: In function 'void bellman()': user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void solve()': user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp:65: warning: unused variable 'min' user.cpp:65: warning: unused variable 'j' user.cpp:65: warning: unused variable 'mini' user.cpp: In function 'void cit()': user.cpp:89: warning: comparison between signed and unsigned integer expressions user.cpp:94: warning: comparison between signed and unsigned integer expressions