Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[nod].size();i++) ~^~~~~~~~~~~~~~~~~ main.cpp:24:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(graf[nod][i] != tata) ^ main.cpp: In function 'int main()': main.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<CBC.size();i++) ~^~~~~~~~~~~ main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<CBC[i].size();j++) ~^~~~~~~~~~~~~~