#include<iostream>
#include<string>
#include<algorithm>
#include<utility>
using namespace std;
int main(void){
	int a,b,c;
	cin>>c>>b>>a;
	while(a>=25){
		a-=25;
		b++;
	}
	while(b>=4){
		b-=4;
		c++;
	}
	while(c>=10)c-=10;
	cout<<a+b+c<<endl;
}