#include <stdio.h>
#include <stdint.h>
// Complete the function
// Don't use loops (for, while, do-while), multiplicatinon(*), division (/), lib (cmath / math.h)
const char* is_power_of_two(uint32_t n) {
// Your logic here
if(n>0){
if((n&(n-1)) == 0 ){
return "YES\n";
}else return "NO\n";
}
return "NO\n";
}
int main() {
uint32_t n;
scanf("%u", &n);
const char* result = is_power_of_two(n);
printf("%s", result);
return 0;
}