How Many Pieces of Land?

Problem Number: 
10 213
Type of Problem: 
Single Output Problem
Problem Category: 
Volume 102 (10,200-10,299)
Input: 
Random Input
0
0
Critical Input: 
Random Input: 
1 2115115464
Problem Description Link: 
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=1…
Problem Id: 
10213