Compilare: main.cpp:15:23: warning: integer overflow in expression [-Woverflow] const int oo = (1<<31)-1; ~~~~~~~^~ main.cpp: In function 'void DFS(int)': main.cpp:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graph[nodStart].size();i++){ ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:99:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<graph[i].size();j++){ ~^~~~~~~~~~~~~~~~