Compilare: main.cpp: In function 'void euler(int)': main.cpp:24:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0; i<gr[nod].size(); i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:45:9: warning: unused variable 'verif' [-Wunused-variable] 45 | int verif=0; | ^~~~~