[백준] 1011번 : Fly me to the Alpha Centauri - Java(자바)

https://www.acmicpc.net/problem/1011

import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int n=s.nextInt();
        for(int i=0;i<n;i++){
            int x=s.nextInt();
            int y=s.nextInt();
            int k=1;
            int count=0;
            
            while(x<y){
                x+=k;
                count++;
                if(x>=y){
                    break;
                }
                y-=k;
                count++;
                k++;
                
            }
            System.out.println(count);
        }
    }
}