Compilare: main.cpp: In function 'int main()': main.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i=0;i<p.size();i++) | ~^~~~~~~~~ main.cpp:66:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for(int j=0;j<v.size();j++) | ~^~~~~~~~~