import sys

input = sys.stdin.readline


def main():
    L = int(input())
    M = int(input())
    N = int(input())
    total = 100 * L + 25 * M + N
    ans = (total % 1000) // 100 + (total % 100) // 25 + total % 25
    print(ans)


if __name__ == '__main__':
    main()