Compilare: user.cpp: In function ‘void buildGG()’: user.cpp:102:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[i].size(); j++) ^ user.cpp: In function ‘void bellmanFord(int)’: user.cpp:147:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ^ user.cpp:170:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[node].size(); i++) ^ user.cpp:134:9: warning: unused variable ‘init’ [-Wunused-variable] int init = node; ^