Compilare: main.cpp: In function 'int main()': main.cpp:27:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(i=1;i<v.size();++i){ | ~^~~~~~~~~ main.cpp:32:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i=1;i<v.size();++i){ | ~^~~~~~~~~ main.cpp:52:18: warning: 'left' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | g << left << ' ' << right; | ^~~ main.cpp:13:20: warning: 'right' may be used uninitialized in this function [-Wmaybe-uninitialized] 13 | int n,i,a,left,right; | ^~~~~