[백준] 1094번 : 막대기 - C#

https://www.acmicpc.net/problem/1094

using System;

class Program
{
    static void Main() {
        string s=Console.ReadLine();
        int n=int.Parse(s);
        int sum=64;
        int a=64;
        int count=1;
        if(n==64) Console.Write("1");
        else{
            for(int i=0;i<7;i++){
                if(sum-a/2>n) sum-=a/2;
                else if(sum-a/2<n) count++;
                a/=2;
            }
            Console.WriteLine(count);
        }
    }
}