Compilare: user.cpp: In function ‘void tipar()’: user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<st.size(); j++) cout<<"["<<st[j].lo<<","<<st[j].hi<<"] "; cout<<"\n"; ^ user.cpp: In function ‘int main()’: user.cpp:72:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<sol.size(); i++) cout<<sol[i]-1<<" "; ^ user.cpp:76:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<st.size(); i++) cout<<"["<<temp.lo<<","<<temp.hi<<"]\n"; ^ user.cpp:25:12: warning: unused variable ‘x’ [-Wunused-variable] int n, i, x; ^