Compilare: main.cpp: In function 'void build_binary_lifting()': main.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i=0;i<aux.size();i++) | ~^~~~~~~~~~~ main.cpp:83:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int i=0;i<aux.size();i++) | ~^~~~~~~~~~~ main.cpp:89:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i=0;i<aux.size();i++) | ~^~~~~~~~~~~ main.cpp:91:13: warning: unused variable 'nr' [-Wunused-variable] 91 | int nr = 0; | ^~ main.cpp: In function 'void build_rmq()': main.cpp:119:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 119 | for(int i=0; i<l.size(); i++) | ~^~~~~~~~~ main.cpp:125:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | for(int i=0; i<l.size(); i++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:209:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 209 | if(Right+1<l.size() && l[Right+1].first<=y) | ~~~~~~~^~~~~~~~~