Snuke has a grid consisting of three squares numbered 1, 2 and 3. In each square, either `0` or `1` is written. The number written in Square i is s_i.  Snuke will place a marble on each square that says `1`. Find the number of squares on which Snuke will place a marble.
a = int(input())
ans = a%10 + int(a/10)%10 + int(int(a/10))%10
print(ans)
a = int(input())
ans = a%10 + (int(a/10))%10 + int(a/100)%10
print(ans)