def tax( p, x )
	p * ( 100 + x ) / 100
end

while ( x, y, s = gets.strip.split.map( &:to_i ) ) != [ 0, 0, 0 ]
	res = 0
	for a in 1...s
		for b in 1...s
			if tax( a, x ) + tax( b, x ) == s
				res = [ res, tax( a, y ) + tax( b, y ) ].max
			end
		end
	end
	puts res
end