c="0" def p(x):a,b=x.split(".");return int(a+b.ljust(99,c)) exec'a,d,b=raw_input().split();s=str(p(a)+p(b)).zfill(99);t=(s[:-99]+"."+s[-99:]).strip(c);print(t<"/")*c+t;'*100
Note that non-ascii characters in the above source code will be escaped (such as \x9f).