#!/usr/bin/env python
# -*- coding:utf-8 -*-

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

    M += (N / 25)
    N %= 25

    L += (M / 4)
    M %= 4
    L %= 10

    print(L + M + N)

if __name__ == "__main__":
    main()