Knuth's Permutation

Problem Number: 
10 063
Type of Problem: 
Single Output Problem
Problem Category: 
Volume 100 (10,000-10,099)
Input: 
Random Input
0
0
Critical Input: 
Random Input: 
ADCFG
Problem Description Link: 
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=1…
Problem Id: 
10063