Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:68:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < edges[node].size(); i++){ ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:80:9: warning: unused variable 'x' [-Wunused-variable] int x, y; ^ main.cpp:80:12: warning: unused variable 'y' [-Wunused-variable] int x, y; ^