#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 2000000000000000000



int main(){
	
	int a,b,c;
	cin>>a>>b>>c;
	
	int ans = 0;
	ans += c%25;
	b += c/25;
	ans += b%4;
	a += b/4;
	ans += a%10;
	
	cout<<ans<<endl;
	return 0;
}