aAa=0 bBb=0 for i in range(1,1001): aA=0 bB=0 if s==0: return 0 else: a='' while s!=0: n=s%2 if n==1: aA+=1 else: bB+=1 s=s//2 a=str(n)+a return a s=int(input()) res=dec_bin(s) print(res)