def main():
    L, M, N = [int(input()) for _ in range(3)]
    total = 100*L + 25*M + N
    senen = total // 1000
    total = total % 1000
    hyakuen = total // 100
    total = total % 100
    nijuugoen = total // 25
    total = total % 25
    itien = total
    print(hyakuen+nijuugoen+itien)

if __name__ == '__main__':
    main()