Compilare: user.cpp: In function ‘void First_DFS(int)’: user.cpp:44:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[node].size(); ++i) ^ user.cpp: In function ‘void Second_DFS(int)’: user.cpp:58:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G_t[node].size(); ++i) ^ user.cpp: In function ‘void Final_DFS(int)’: user.cpp:90:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G_ctc[node].size(); ++i) ^ user.cpp: In function ‘void Compute_Comprimated_Graph()’: user.cpp:102:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<G[i].size(); ++j) ^ user.cpp:104:17: warning: unused variable ‘vecin’ [-Wunused-variable] int vecin = G[i][j]; ^ user.cpp:113:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<ctc.size(); ++i) ^ user.cpp:117:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<topo.size(); ++i) ^ user.cpp:119:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<G_ctc[topo[i]].size(); ++j) ^ user.cpp:127:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<topo.size(); ++i) ^ user.cpp: In function ‘void Find_Resault()’: user.cpp:138:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<ctc.size(); ++i) ^