Compilare: user.cpp: In function ‘bool isMinlex1()’: user.cpp:39:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<aux.size() && i<ans.size();++i) ^ user.cpp:39:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<aux.size() && i<ans.size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:5:11: warning: unused variable ‘first’ [-Wunused-variable] #define x first ^ user.cpp:56:8: note: in expansion of macro ‘x’ int n,x,y,i,j,h,s1,s2,ind,p; ^ user.cpp:6:11: warning: unused variable ‘second’ [-Wunused-variable] #define y second ^ user.cpp:56:10: note: in expansion of macro ‘y’ int n,x,y,i,j,h,s1,s2,ind,p; ^ user.cpp:56:24: warning: unused variable ‘ind’ [-Wunused-variable] int n,x,y,i,j,h,s1,s2,ind,p; ^ user.cpp: In function ‘bool isMinlex1()’: user.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] } ^