Compilare: user.cpp: In function ‘int getResult(std::vector<int>, std::vector<int>)’: user.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<o.size();i++) ~^~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:59:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=r0+1;j<P0.size();j++) ~^~~~~~~~~~ user.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n1l<tl.size()) tl.resize(n1l); ~~~^~~~~~~~~~ user.cpp:65:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n1r<tr.size()) tr.resize(n1r); ~~~^~~~~~~~~~ user.cpp:69:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size() && j<tr.size()) ~^~~~~~~~~~ user.cpp:69:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size() && j<tr.size()) ~^~~~~~~~~~ user.cpp:75:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size()) zeros.push_back(tl[i++]); ~^~~~~~~~~~ user.cpp:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<tr.size()) zeros.push_back(tr[j++]); ~^~~~~~~~~~ user.cpp:48:13: warning: unused variable ‘nrs1’ [-Wunused-variable] int nrs1=countS(l,r,1); ^~~~ user.cpp:51:13: warning: unused variable ‘k’ [-Wunused-variable] int k=0; ^