Compilare: main.cpp: In function 'void euler(int)': main.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | while(ptr[nod] < adj[nod].size()) { | ~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int i=0;i<ans.size()-1;i++) | ~^~~~~~~~~~~~~