Compilare: user.cpp: In function ‘int getResult(std::vector<int>, std::vector<int>)’: user.cpp:16:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<o.size();i++) ~^~~~~~~~~ user.cpp:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<z.size() && j<o.size()) ~^~~~~~~~~ user.cpp:26:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<z.size() && j<o.size()) ~^~~~~~~~~ user.cpp:31:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<z.size()) V[k++]={0,z[i++]}; ~^~~~~~~~~ user.cpp:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<o.size()) V[k++]={1,o[j++]}; ~^~~~~~~~~ user.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<V.size();i++) ~^~~~~~~~~ user.cpp:39:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(q<V.size() && (used[q] || V[q].first==1)) q++; ~^~~~~~~~~ user.cpp:43:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q<V.size()) ~^~~~~~~~~ user.cpp:40:21: warning: variable ‘add’ set but not used [-Wunused-but-set-variable] int add=0; ^~~ user.cpp: In function ‘int main()’: user.cpp:96:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=r0+1;j<P0.size();j++) ~^~~~~~~~~~ user.cpp:100:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size() && j<tr.size()) ~^~~~~~~~~~ user.cpp:100:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size() && j<tr.size()) ~^~~~~~~~~~ user.cpp:106:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<tl.size()) zeros.push_back(tl[i++]); ~^~~~~~~~~~ user.cpp:107:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<tr.size()) zeros.push_back(tr[j++]); ~^~~~~~~~~~ user.cpp:86:13: warning: unused variable ‘nrs1’ [-Wunused-variable] int nrs1=countS(l,r,1); ^~~~ user.cpp:88:13: warning: unused variable ‘k’ [-Wunused-variable] int k=0; ^