Compilare: main.cpp: In function 'std::vector<int> quick_sort(std::vector<int>)': main.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0,j=0;(i<a.size())||(j<b.size());){ | ~^~~~~~~~~ main.cpp:24:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0,j=0;(i<a.size())||(j<b.size());){ | ~^~~~~~~~~ main.cpp:25:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(i == a.size()){ | ~~^~~~~~~~~~~ main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | }else if(j == b.size()){ | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for(int i=0;i<v.size();i+=10) | ~^~~~~~~~~