Compilare: main.cpp: In member function 'void SegmentTree::build(int, int, int)': main.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | while(ind<aux.size() && aux[ind].first<=x) | ~~~^~~~~~~~~~~ main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | while(ind<aux.size() && aux[ind].second<y) | ~~~^~~~~~~~~~~ main.cpp:81:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | while(ind<aux.size()) | ~~~^~~~~~~~~~~ main.cpp: In member function 'int SegmentTree::query(int, int)': main.cpp:132:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for(int i=1; i<nodes.size(); i++) | ~^~~~~~~~~~~~~ main.cpp:156:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 156 | for(int i=0; i<nodes.size(); i++) | ~^~~~~~~~~~~~~ main.cpp:159:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 159 | if(i>0 && i<nodes.size()-1) | ~^~~~~~~~~~~~~~~