Movement of Reading Head

Problem Number: 
680
Type of Problem: 
Single Output Problem
Problem Category: 
Volume 6 (600-699)
Input: 
Random Input
0
0
Critical Input: 
Random Input: 
1 1 5 5 5 2 -1
Problem Description Link: 
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=1…
Problem Id: 
680