http://poj.org/problem?id=2619 /* @author: */ import java.util.Scanner; import java.util.Arrays; public class Main{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); int a,b; a=sc.nextInt(); b=sc.nextInt(); int p1,p2,p3,d1,d2,d3; p1=(int)Math.sqrt(a*1.0); if(p1*p1< a) p1++; d1=(int)Math.sqrt(b*1.0); if(d1*d1< b) d1++; int v1=(p1-1)*(p1-1); int v2=(d1-1)*(d1-1); p2=(a-v1+1)/2; d2=(b-v2+1)/2; p3=(p1*p1-a)/2+1; d3=(d1*d1-b)/2+1; int ans=Math.abs(p1-d1)+Math.abs(p2-d2)+Math.abs(p3-d3); System.out.printf("%dn",ans); } }
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