Compilare: main.cpp: In function 'int main()': main.cpp:62:26: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 62 | if(ras.size()==n-1) | ~~~~~~~~~~^~~~~ main.cpp:67:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int i=0;i<ras.size();i++) | ~^~~~~~~~~~~