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

def main():
    l = int(input())
    m = int(input())
    n = int(input())

    input_value = {1000:0, 100:l, 25:m, 1:n}
    output_value = {}

    rest = 0
    for key, value in input_value.items():
        rest += key * value
    for j in sorted([i for i in input_value.keys()], reverse=True):
        output_value[j] = rest // j
        rest = rest % j
        
    print(output_value[100] + output_value[25] + output_value[1])
    
if __name__ == '__main__':
    main()