int main()
{
int x,l,n,r,a;
cout<<"n,L,R?"<<endl;
cin>>n>>l>>r;
x=0;
for(int b=l;b<=r;b++)
{
a=b%n;
if(x<a)
{
x=a;
}
}
cout<<"you can get at most "<<x;
return 0;
}
int main()
{
int x,l,n,r,a;
cout<<"n,L,R?"<<endl;
cin>>n>>l>>r;
x=0;
for(int b=l;b<=r;b++)
{
a=b%n;
if(x<a)
{
x=a;
}
}
cout<<"you can get at most "<<x;
return 0;
}