Compilare: user.cpp:8:33: warning: integer overflow in expression [-Woverflow] const int nmax=6e6, inf=(1<<31)-1; ^ user.cpp: In function ‘int main()’: user.cpp:31:32: warning: ‘soly’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<sol<<" "<<solx<<" "<<soly<<"\n"; ^ user.cpp:31:21: warning: ‘solx’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<sol<<" "<<solx<<" "<<soly<<"\n"; ^