#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
#define ALL(A) A.begin(), A.end()

using namespace std;

typedef long long ll;
typedef pair<int, int> P;

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int L, M, N; cin >> L >> M >> N;

	int money = 0;
	money += 100*L;
	money += 25*M;
	money += N;

	money %= 1000;

	int res = 0;

	res += money / 100;
	money -= (money / 100) * 100;
	res += money / 25;
	money -= (money / 25) * 25;
	res += money;

	cout << res << endl;

	return 0;
}