Compilare: main.cpp: In function 'void dfsc(int, int)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses] viz[i]=d2[i]=0,d1[i]=c[i]; ~~~~~^~