Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[node].size(); i++) { ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Stack.size(); i++) ~^~~~~~~~~~~~~ main.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<ans[i].size(); j++) ~^~~~~~~~~~~~~~