Compilare: user.cpp: In function ‘int Gr(int)’: user.cpp:40:16: warning: unused variable ‘initx’ [-Wunused-variable] { int i,kd=0,initx=x; ^ user.cpp: In function ‘void Solve(int)’: user.cpp:55:10: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,ind; ^ user.cpp: In function ‘int main()’: user.cpp:130:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<pos[nr].size();j++) ^