#include <cstdio>
//=======================================================
// PrintInBinary
//=======================================================
// PrintInBinary(n) writes out the binary representation
// of n.
//=======================================================
void PrintInBinary(long n)
{
if(n > 1)
{
PrintInBinary(n/2);
}
printf("%ld", n%2);
}
int main()
{
long n;
scanf("%ld", &n);
PrintInBinary(n);
return 0;
}