Compilare: user.cpp: In function ‘void DFS(int, 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 precalcGG(int)’: user.cpp:69:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void DFS2(int)’: user.cpp:91:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GG[node].size(); i++) ~~^~~~~~~~~~~~~~~~~ user.cpp:96:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Cycle[node].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~ user.cpp:100:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[n].size(); j++) ~~^~~~~~~~~~~~~ user.cpp:109:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Cycle[node].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~ user.cpp:116:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Cycle[node].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~