11816번: 8진수, 10진수, 16진수 ↗

a=input()
if(a[0]=="0"):
    if(a[1]=="x"):
        a=a[2:]
        a=int(a,16)
        print(a)
    else:
        a=a[1:]
        a=int(a,8)
        print(a)
else:
    print(a)