#include<iostream>
#include<sstream>
#include<string>

int main(){
    int num100,num25,num1;
    std::cin >> num100>>num25>>num1;
    num25+=static_cast<int>(num1/25);
    num1 -=25*static_cast<int>(num1/25);
    num100+=static_cast<int>(num25/4);
    num25 -=4*static_cast<int>(num25/4);
    num100 -=10*static_cast<int>(num100/10);
    std::cout << num100+num25+num1 << std::endl;
    return 0;
}