a=int(input()) r=a//10000 b=a%10000//1000 c=a%1000//100 d=a%100//10 y=a%10//1 if y!=0: a=y*10000+d*1000+c*100+b*10+r else: a=str(y)+str(d*1000+c*100+b*10+r) print(a)