#include<cstdio>
#include <iostream>
#include<algorithm>
#include<string>
#include<queue>
#include<vector>
#include<functional>
#include<cmath>
#include<map>
#include<stack>
#include<set>
#include<numeric>

using namespace std;
typedef long long ll;
typedef pair<ll, ll> Pr;

int L, M, N;

int main()
{
	cin >> L >> M >> N;

	M += N / 25;
	N -= (N / 25) * 25;

	L += M / 4;
	M -= (M / 4) * 4;

	L -= (L / 10) * 10;

	cout << L + M + N << endl;
	return 0;
}