#include <bits/stdc++.h>
#define rep(i,a,b) for(int i = (a); i < (b); i++)
#define all(A) (A).begin(),(A).end()
#define MOD 1000000007
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;

int main() {
	int l,m,n; cin >> l >> m >> n;
	int total = l*100+m*25+n,ans = 0;
	ans += total/100;
	total /= 100;
	ans += total/25;
	total /= 25;
	cout << ans+total;
}