Compilare: user.cpp: In function ‘void stop(long double)’: user.cpp:22:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Lista[i].size();j++) ^ user.cpp: In function ‘bool bellmanford(long double)’: user.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Lista[i].size();j++) ^ user.cpp:43:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Lista[nc].size();i++){ ^ user.cpp:26:9: warning: unused variable ‘nr’ [-Wunused-variable] int nr=0; ^