Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<fstream> ^~~~~~ main.cpp:2:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main(){int n,d=2,p=0,t=1;std::ifstream("perechi.in")>>n;while(d*d<=n){p=1;while(n%d==0){p+=2;n/=d;}t*=p;d++;}t*=(n==1?1:3);std::ofstream("perechi.out")<<(t+1)/2;} ^