Compilare: main.cpp: In member function 'void SegmentTree::build(int, int, int)': main.cpp:57:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | while(i1<segm[2*i].size() && i2<segm[2*i+1].size()) | ~~^~~~~~~~~~~~~~~~~ main.cpp:57:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | while(i1<segm[2*i].size() && i2<segm[2*i+1].size()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:65:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | while(i1<segm[2*i].size()) | ~~^~~~~~~~~~~~~~~~~ main.cpp:67:17: 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 | while(i2<segm[2*i+1].size()) | ~~^~~~~~~~~~~~~~~~~~~ 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() && aux[ind].first<=x) | ~~~^~~~~~~~~~~ main.cpp:86:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | while(ind<aux.size() && aux[ind].second<y) | ~~~^~~~~~~~~~~ main.cpp:91:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | while(ind<aux.size()) | ~~~^~~~~~~~~~~ main.cpp: In member function 'int SegmentTree::query(int, int)': main.cpp:142:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 142 | for(int i=1; i<nodes.size(); i++) | ~^~~~~~~~~~~~~ main.cpp:166:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 166 | for(int i=0; i<nodes.size(); i++) | ~^~~~~~~~~~~~~ main.cpp:169:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 169 | if(i>0 && i<nodes.size()-1) | ~^~~~~~~~~~~~~~~