Compilare: main.cpp: In function 'int main()': main.cpp:52:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:65:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<a[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp:82:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<aT[nod].size();j++) ~^~~~~~~~~~~~~~~