from time import clock
import sys
from string import * 


f=open('in13_3.txt','r')
of=open('out_23_13_3.txt','w')
begin=clock()
m,n=f.readline().split(',')


def func(l, i, j):
    
    while j>i:
          ch=l[i]
          ch1=l[j]
          l=l[0:i]+ch1+l[i+1:]
          l=l[0:j]+ch+l[j+1:]          
          
          j=j-1
          i=i+1
        
    return l

def func2(listt,f):
    
    n=len(listt)
    l=[]
    l=func(listt,0,f - 1)
    l=func(l,f,n - 1)
    l=func(l,0,n - 1)
    return l
    
r=func2(m,int(n))

of.write(str(r))
of.write("\n"+"memory used="+str(sys.getsizeof(f)+sys.getsizeof(of)+sys.getsizeof(n)+sys.getsizeof(m)))
of.write("\n"+"time taken="+str(clock()-begin))


f.close()
of.close()