def main():
	L = int(input())
	M = int(input())
	N = int(input())

	maisu = 0

	money = L*100
	money += M*25
	money += N

	
	nokori = money % 1000

	maisu += nokori // 100
	nokori = nokori % 100

	maisu += nokori  //25
	nokori = nokori % 25

	maisu += nokori

	print(maisu)

if __name__ == '__main__':
	main()