Compilare: main.cpp: In function 'int32_t main()': main.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int j=0; j<tree.size() || it!=s.end(); ){ | ~^~~~~~~~~~~~ main.cpp:73:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | if(j==tree.size()){ | ~^~~~~~~~~~~~~ main.cpp:96:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int j=0; j<vec.size(); j++){ | ~^~~~~~~~~~~