Compilare: main.cpp: In function 'void DFS(std::vector<int>*, int*, int)': main.cpp:10:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<edge[node].size(); i++){ ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:13: warning: unused variable 'next' [-Wunused-variable] int next, pred; ^~~~ main.cpp:55:19: warning: unused variable 'pred' [-Wunused-variable] int next, pred; ^~~~ main.cpp:74:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<edge[node1].size(); i++){ ~^~~~~~~~~~~~~~~~~~~ main.cpp:76:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<edge[node2].size(); j++){ ~^~~~~~~~~~~~~~~~~~~