a = [ 1, 0, 0, 0, 1, 0, 1, 0, 2, 1 ]
N = input()
b = sum( a[ ord( v ) - ord( '0' ) ] for v in N )
print( min( 2 * len( N ) + b + 1, 2 * ( b + 1 ) + len( N ) ) )