Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:78:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<comp[cc[i]].size();j++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:86:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<comp[cc[i+1]].size();j++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:102:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<comp[cc[i]].size();j++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:116:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<comp[cc[i]].size() && k<nri;j++) ~^~~~~~~~~~~~~~~~~~~