Compilare: user.cpp: In function ‘void DFP(int)’: user.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void DFM(int)’: user.cpp:45:22: 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:97:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[n].size(); i++) ^ user.cpp:114:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:116:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void Solve()’: user.cpp:149:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:151:40: warning: unused variable ‘cost’ [-Wunused-variable] int neighb = G[node][i].first, cost = G[node][i].second; ^