Compilare: main.cpp: In function 'void eulerinho(int)': main.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<v[nod].fii.size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:19: warning: unused variable 'j' [-Wunused-variable] 49 | int i,x,y,a,b,j,niv1,niv2,l,q; | ^