#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define Would
#define you
#define please


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int L, M, N;
	cin >> L >> M >> N;

	int kazu = 0;
	kazu += N % 25;
	M += N / 25;
	kazu += M % 4;
	L += M / 4;
	kazu += L % 10;

	co(kazu);

	Would you please return 0;
}