Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<fstream> ^~~~~~ main.cpp:2:77: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] std::ifstream f("simpla.in");std::ofstream g("simpla.out");int a,b,s,A;main(){f>>a>>b;A=a;while(A)s+=A%10,A/=10;if(s%2==0&&a!=0)a--;g<<b/2+b%2-a/2-a%2;} ^