s=input()
n=len(s)+1
que=[""]*n
head=tail=0
for i in range(n-1):
    que[tail]=s[i]
    tail+=1
s1=""
flag=False
while __________:
    x=que[head]
    head=__________
    if flag:
        que[tail]=x
        tail=(tail+1)%n
    else:
        s1+=x
    __________
print(s1)