2022.01.25 [백준] C# 분수 찾기

 

---

풀이 1

 

using System;
class Program{
    static void Main(){
        int n = int.Parse(Console.ReadLine());
        int a = 1;
        int cnt = 1;
        while(n>a){
            cnt++;
            a+=cnt;
        }
        if(cnt%2==0){
            Console.Write($"{cnt-(a-n)}/{a-n+1}");            
        }else{
            Console.Write($"{a-n+1}/{cnt-(a-n)}"); 
        }
    }
}