Compilare: user.cpp: In function ‘int main()’: user.cpp:65:71: warning: operation on ‘maxx’ may be undefined [-Wsequence-point] spatiux[++maxx]=spatiux[maxx-1]+iniv[i].first-iniv[i-1].second; ^ user.cpp:69:71: warning: operation on ‘maxy’ may be undefined [-Wsequence-point] spatiuy[++maxy]=spatiuy[maxy-1]+inio[i].first-inio[i-1].second; ^