```c++
#include<iostream>
using namespace std;
int main() {
int a ;
int c = 1;
int b = 1;
cin >> a;
cout << b << " " << a << " "<<(b == a) << (1 == 3)<< endl;
for (b; b == a; b++)
{
c *= b;
printf("%d",b);
}
printf("%d",c);
return 0;
}
```