#include <stdio.h>
#include <stdint.h>
// Complete the function
const char* is_power_of_two(uint32_t n) {
// Your logic here
if(n==0)return "NO";
uint32_t temp=1;
bool found=false;
for(int i=0;i<32;i++){
if(temp==n){
found=true;
break;
}
temp<<=1;
}
return !found?"NO":"YES";
}
int main() {
uint32_t n;
scanf("%u", &n);
const char* result = is_power_of_two(n);
printf("%s", result);
return 0;
}