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.
[ s1, s2, s3 ] = str( input() )
print( s1 + s2 + s3 )
[ s1, s2, s3 ] = str( input() )
print( int( s1 ) + int( s2 ) + int( s3 ) )