#include<iostream>
#include<math.h>
#include<vector>
#include<string>
#include<iomanip>
#include<deque>
#include<map>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define vvint(vec,n,m,init) vector<vector<int>> vec(n,vector<int> (m,init))



int main()
{
	int l, m, n;
	cin >> l >> m >> n ;
	m += n / 25;
	n %= 25;
	l += m / 4;
	m %= 4;
	l %= 10;

	cout << l + m + n << endl;
    
}