Compilare: user.cpp: In function ‘void buildGG()’: user.cpp:93:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[i].size(); j++) ^ user.cpp: In function ‘void DFS2(int)’: user.cpp:123:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ^ user.cpp: In function ‘void DFP2(int)’: user.cpp:134:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ^ user.cpp: In function ‘void DFM2(int)’: user.cpp:146:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[node].size(); i++) ^ user.cpp: In function ‘void bellmanFord(int)’: user.cpp:157:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[node].size(); i++) ^ user.cpp:159:13: warning: unused variable ‘neighb’ [-Wunused-variable] int neighb = GT[node][i].first, e = GT[node][i].second; ^ user.cpp:177:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ^ user.cpp:207:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ^ user.cpp:230:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[node].size(); i++) ^